LeetCode-in-All

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Data Structure II

Day 1 Array
0136 Single Number Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, Big_O_Time_O(N)_Space_O(1) 1 99.97
0169 Majority Element Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Sorting, Counting, Divide_and_Conquer, Big_O_Time_O(n)_Space_O(1) 1 100.00
0015 3Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Big_O_Time_O(n*log(n))_Space_O(n^2) 29 82.24

Day 2 Array
0075 Sort Colors Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Big_O_Time_O(n)_Space_O(1) 0 100.00
0056 Merge Intervals Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Big_O_Time_O(n_log_n)_Space_O(n) 8 96.27

Day 3 Array
0048 Rotate Image Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Matrix, Big_O_Time_O(n^2)_Space_O(1) 0 100.00

Day 4 Array
0240 Search a 2D Matrix II Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Binary_Search, Matrix, Divide_and_Conquer, Big_O_Time_O(n+m)_Space_O(1) 7 86.73

Day 5 Array
0238 Product of Array Except Self Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Prefix_Sum, Big_O_Time_O(n^2)_Space_O(n) 1 100.00
0560 Subarray Sum Equals K Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Hash_Table, Prefix_Sum, Big_O_Time_O(n)_Space_O(n) 21 98.97

Day 6 String

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Day 7 String
0763 Partition Labels Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium String, Hash_Table, Greedy, Two_Pointers, Big_O_Time_O(n)_Space_O(1) 1 100.00

Day 8 String
0049 Group Anagrams Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, String, Hash_Table, Sorting, Big_O_Time_O(n*k_log_k)_Space_O(n) 6 92.28

Day 9 String
0005 Longest Palindromic Substring Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n) 7 96.96

Day 10 Linked List
0002 Add Two Numbers Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Math, Linked_List, Recursion, Big_O_Time_O(max(N,M))_Space_O(max(N,M)), AI_can_be_used_to_solve_the_task 1 100.00
0142 Linked List Cycle II Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Hash_Table, Two_Pointers, Linked_List, Big_O_Time_O(N)_Space_O(1) 0 100.00

Day 11 Linked List
0160 Intersection of Two Linked Lists Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Two_Pointers, Linked_List, Big_O_Time_O(M+N)_Space_O(1) 1 99.68

Day 12 Linked List
0024 Swap Nodes in Pairs Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Linked_List, Recursion, Big_O_Time_O(n)_Space_O(1) 0 100.00

Day 13 Linked List
0025 Reverse Nodes in k-Group Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Linked_List, Recursion, Big_O_Time_O(n)_Space_O(k) 0 100.00

Day 14 Stack Queue
0155 Min Stack Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Stack, Design, Big_O_Time_O(1)_Space_O(N) 3 100.00

Day 15 Tree
0105 Construct Binary Tree from Preorder and Inorder Traversal Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Tree, Binary_Tree, Divide_and_Conquer, Big_O_Time_O(N)_Space_O(N) 3 86.35

Day 16 Tree

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Day 17 Tree
0230 Kth Smallest Element in a BST Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Big_O_Time_O(n)_Space_O(n) 1 78.91

Day 18 Tree
0236 Lowest Common Ancestor of a Binary Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Big_O_Time_O(n)_Space_O(n) 10 56.51

Day 19 Graph

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Day 20 Heap Priority Queue
0215 Kth Largest Element in an Array Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Heap_Priority_Queue, Divide_and_Conquer, Quickselect, Big_O_Time_O(n*log(n))_Space_O(log(n)) 5 70.82
0347 Top K Frequent Elements Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Hash_Table, Sorting, Heap_Priority_Queue, Counting, Divide_and_Conquer, Quickselect, Bucket_Sort, Big_O_Time_O(n*log(n))_Space_O(k) 9 97.93

Day 21 Heap Priority Queue

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Algorithm I
0035 Search Insert Position Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Array, Binary_Search, Big_O_Time_O(log_n)_Space_O(1) 0 100.00

Day 2 Two Pointers
0189 Rotate Array Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Two_Pointers, Big_O_Time_O(n)_Space_O(1) 0 100.00

Day 3 Two Pointers
0283 Move Zeroes Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Array, Two_Pointers, Big_O_Time_O(n)_Space_O(1) 2 79.54

Day 4 Two Pointers

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Day 5 Two Pointers
0019 Remove Nth Node From End of List Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Two_Pointers, Linked_List, Big_O_Time_O(L)_Space_O(L) 0 100.00

Day 6 Sliding Window
0003 Longest Substring Without Repeating Characters Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Sliding_Window, Big_O_Time_O(n)_Space_O(1) 2 99.52

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Day 10 Recursion Backtracking
0021 Merge Two Sorted Lists Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(m+n)_Space_O(m+n) 0 100.00
0206 Reverse Linked List Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(N)_Space_O(1) 0 100.00

Day 11 Recursion Backtracking
0046 Permutations Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Backtracking, Big_O_Time_O(n*n!)_Space_O(n+n!) 1 95.07

Day 12 Dynamic Programming
0070 Climbing Stairs Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Memoization, Big_O_Time_O(n)_Space_O(n) 0 100.00
0198 House Robber Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n) 0 100.00

Day 13 Bit Manipulation

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Day 14 Bit Manipulation
0136 Single Number Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, Big_O_Time_O(N)_Space_O(1) 1 99.97

Algorithm II

Day 1 Binary Search
0034 Find First and Last Position of Element in Sorted Array Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Big_O_Time_O(log_n)_Space_O(1) 0 100.00
0033 Search in Rotated Sorted Array Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Big_O_Time_O(log_n)_Space_O(1) 0 100.00
0074 Search a 2D Matrix Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Binary_Search, Matrix, Big_O_Time_O(endRow+endCol)_Space_O(1) 0 100.00
0153 Find Minimum in Rotated Sorted Array Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Binary_Search, Big_O_Time_O(log_N)_Space_O(log_N) 0 100.00

Day 3 Two Pointers
0015 3Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Big_O_Time_O(n*log(n))_Space_O(n^2) 29 82.24

Day 4 Two Pointers
0011 Container With Most Water Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Greedy, Two_Pointers, Big_O_Time_O(n)_Space_O(1) 3 95.71

Day 5 Sliding Window
0438 Find All Anagrams in a String Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, String, Hash_Table, Sliding_Window, Big_O_Time_O(n+m)_Space_O(1) 6 99.03
0200 Number of Islands Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Big_O_Time_O(M*N)_Space_O(M*N) 3 97.76

Day 7 Breadth First Search Depth First Search

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Day 8 Breadth First Search Depth First Search

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Day 9 Recursion Backtracking
0078 Subsets Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, Backtracking, Big_O_Time_O(2^n)_Space_O(n*2^n) 1 70.60

Day 10 Recursion Backtracking
0039 Combination Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Backtracking, Big_O_Time_O(2^n)_Space_O(n+2^n) 1 100.00

Day 11 Recursion Backtracking
0017 Letter Combinations of a Phone Number Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Backtracking, Big_O_Time_O(4^n)_Space_O(n) 0 100.00
0022 Generate Parentheses Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Backtracking, Big_O_Time_O(2^n)_Space_O(n) 0 100.00
0079 Word Search Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Matrix, Backtracking, Big_O_Time_O(4^(m*n))_Space_O(m*n) 157 78.97

Day 12 Dynamic Programming
0055 Jump Game Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Greedy, Big_O_Time_O(n)_Space_O(1) 2 79.47

Day 13 Dynamic Programming
0045 Jump Game II Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Dynamic_Programming, Greedy, Big_O_Time_O(n)_Space_O(1) 2 49.02
0062 Unique Paths Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Combinatorics, Big_O_Time_O(m*n)_Space_O(m*n) 0 100.00

Day 14 Dynamic Programming
0005 Longest Palindromic Substring Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n) 7 96.96

Day 15 Dynamic Programming
0139 Word Break Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Dynamic_Programming, Trie, Memoization, Big_O_Time_O(M+max*N)_Space_O(M+N+max) 2 97.08

Day 16 Dynamic Programming
0300 Longest Increasing Subsequence Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Dynamic_Programming, Binary_Search, Big_O_Time_O(n*log_n)_Space_O(n) 3 98.63

Day 17 Dynamic Programming
1143 Longest Common Subsequence Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, String, Dynamic_Programming, Big_O_Time_O(n*m)_Space_O(n*m) 33 46.23

Day 18 Dynamic Programming
0072 Edit Distance Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, String, Dynamic_Programming, Big_O_Time_O(n^2)_Space_O(n2) 4 90.13
0322 Coin Change Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Dynamic_Programming, Breadth_First_Search, Big_O_Time_O(m*n)_Space_O(amount) 17 91.77

Day 19 Bit Manipulation

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Day 20 Others

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Day 21 Others

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Binary Search I

Day 1

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Day 2
0035 Search Insert Position Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Array, Binary_Search, Big_O_Time_O(log_n)_Space_O(1) 0 100.00

Day 3

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Day 4

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Day 5
0034 Find First and Last Position of Element in Sorted Array Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Big_O_Time_O(log_n)_Space_O(1) 0 100.00

Day 6

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Day 7

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Day 8
0074 Search a 2D Matrix Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Binary_Search, Matrix, Big_O_Time_O(endRow+endCol)_Space_O(1) 0 100.00

Day 9

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Day 10

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Day 11
0033 Search in Rotated Sorted Array Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Big_O_Time_O(log_n)_Space_O(1) 0 100.00

Day 12
0153 Find Minimum in Rotated Sorted Array Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Binary_Search, Big_O_Time_O(log_N)_Space_O(log_N) 0 100.00

Binary Search II

Day 1

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Day 2

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Day 3
0300 Longest Increasing Subsequence Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Dynamic_Programming, Binary_Search, Big_O_Time_O(n*log_n)_Space_O(n) 3 98.63

Day 4

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Day 5
0287 Find the Duplicate Number Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Binary_Search, Two_Pointers, Bit_Manipulation, Big_O_Time_O(n)_Space_O(n) 2 99.82

Day 6

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Day 7

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Day 8
0240 Search a 2D Matrix II Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Binary_Search, Matrix, Divide_and_Conquer, Big_O_Time_O(n+m)_Space_O(1) 7 86.73

Day 9

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Day 10

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Day 11

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Day 12

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Day 13

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Day 14

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Day 15

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Day 16

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Day 17

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Day 18

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Day 19

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Day 20

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Dynamic Programming I

Day 1

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Day 2
0070 Climbing Stairs Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Memoization, Big_O_Time_O(n)_Space_O(n) 0 100.00

Day 3
0198 House Robber Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n) 0 100.00

Day 4
0055 Jump Game Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Greedy, Big_O_Time_O(n)_Space_O(1) 2 79.47
0045 Jump Game II Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Dynamic_Programming, Greedy, Big_O_Time_O(n)_Space_O(1) 2 49.02

Day 5
0053 Maximum Subarray Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Divide_and_Conquer, Big_O_Time_O(n)_Space_O(1) 1 100.00

Day 6
0152 Maximum Product Subarray Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(N)_Space_O(1) 1 92.31

Day 7
0121 Best Time to Buy and Sell Stock Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(N)_Space_O(1) 1 100.00

Day 8

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Day 9
0139 Word Break Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Dynamic_Programming, Trie, Memoization, Big_O_Time_O(M+max*N)_Space_O(M+N+max) 2 97.08
0042 Trapping Rain Water Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Two_Pointers, Stack, Monotonic_Stack, Big_O_Time_O(n)_Space_O(1) 0 100.00

Day 10

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Day 11
0096 Unique Binary Search Trees Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Dynamic_Programming, Math, Tree, Binary_Tree, Binary_Search_Tree, Big_O_Time_O(n)_Space_O(1) 0 100.00

Day 12

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Day 13

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Day 14

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Day 15
0062 Unique Paths Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Combinatorics, Big_O_Time_O(m*n)_Space_O(m*n) 0 100.00

Day 16
0064 Minimum Path Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Dynamic_Programming, Matrix, Big_O_Time_O(m*n)_Space_O(m*n) 0 100.00
0221 Maximal Square Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Array, Dynamic_Programming, Matrix, Big_O_Time_O(m*n)_Space_O(m*n) 7 72.35

Day 17
0005 Longest Palindromic Substring Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n) 7 96.96

Day 18
0300 Longest Increasing Subsequence Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Dynamic_Programming, Binary_Search, Big_O_Time_O(n*log_n)_Space_O(n) 3 98.63

Day 19
1143 Longest Common Subsequence Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, String, Dynamic_Programming, Big_O_Time_O(n*m)_Space_O(n*m) 33 46.23
0072 Edit Distance Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, String, Dynamic_Programming, Big_O_Time_O(n^2)_Space_O(n2) 4 90.13

Day 20
0322 Coin Change Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Dynamic_Programming, Breadth_First_Search, Big_O_Time_O(m*n)_Space_O(amount) 17 91.77

Day 21

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Programming Skills I

Day 1 Basic Data Type

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Day 2 Operator

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Day 3 Conditional Statements

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Day 4 Loop

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Day 5 Function

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Day 6 Array
0283 Move Zeroes Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Array, Two_Pointers, Big_O_Time_O(n)_Space_O(1) 2 79.54

Day 7 Array

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Day 8 String

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Day 9 String

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Day 10 Linked List and Tree
0104 Maximum Depth of Binary Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(H) 0 100.00

Day 11 Containers and Libraries

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Day 12 Class and Object

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Programming Skills II

Day 1

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Day 2

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Day 3

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Day 4

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Day 5

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Day 6
0739 Daily Temperatures Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Stack, Monotonic_Stack, Big_O_Time_O(n)_Space_O(n) 10 94.99

Day 7
0048 Rotate Image Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Matrix, Big_O_Time_O(n^2)_Space_O(1) 0 100.00

Day 8

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Day 9

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Day 10

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Day 11
0049 Group Anagrams Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, String, Hash_Table, Sorting, Big_O_Time_O(n*k_log_k)_Space_O(n) 6 92.28

Day 12
0438 Find All Anagrams in a String Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, String, Hash_Table, Sliding_Window, Big_O_Time_O(n+m)_Space_O(1) 6 99.03

Day 13

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Day 14
0138 Copy List with Random Pointer Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Linked_List, Big_O_Time_O(N)_Space_O(N) 0 100.00

Day 15
0002 Add Two Numbers Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Math, Linked_List, Recursion, Big_O_Time_O(max(N,M))_Space_O(max(N,M)), AI_can_be_used_to_solve_the_task 1 100.00

Day 16

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Day 17

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Day 18
0155 Min Stack Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Stack, Design, Big_O_Time_O(1)_Space_O(N) 3 100.00

Day 19

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Day 20

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Graph Theory I
0200 Number of Islands Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Big_O_Time_O(M*N)_Space_O(M*N) 3 97.76

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Day 7 Standard Traversal

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Day 8 Standard Traversal

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Day 9 Standard Traversal

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Day 10 Standard Traversal

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Day 13 Graph Theory

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Day 14 Graph Theory

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SQL I

Day 1 Select

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Day 2 Select and Order

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Day 3 String Processing Functions

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Day 4 Union and Select

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Day 5 Union

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Day 6 Union

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Day 7 Function

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Day 8 Function

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Day 9 Control of Flow

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Day 10 Where

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Level 1

Day 1 Prefix Sum

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Day 2 String

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Day 3 Linked List
0021 Merge Two Sorted Lists Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(m+n)_Space_O(m+n) 0 100.00
0206 Reverse Linked List Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(N)_Space_O(1) 0 100.00

Day 4 Linked List
0142 Linked List Cycle II Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Hash_Table, Two_Pointers, Linked_List, Big_O_Time_O(N)_Space_O(1) 0 100.00

Day 5 Greedy
0121 Best Time to Buy and Sell Stock Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(N)_Space_O(1) 1 100.00

Day 6 Tree
0102 Binary Tree Level Order Traversal Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(N) 1 91.09

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Day 8 Binary Search Tree
0098 Validate Binary Search Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Big_O_Time_O(N)_Space_O(log(N)) 0 100.00

Day 9 Graph/BFS/DFS
0200 Number of Islands Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Big_O_Time_O(M*N)_Space_O(M*N) 3 97.76

Day 10 Dynamic Programming
0070 Climbing Stairs Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Memoization, Big_O_Time_O(n)_Space_O(n) 0 100.00

Day 11 Dynamic Programming
0062 Unique Paths Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Combinatorics, Big_O_Time_O(m*n)_Space_O(m*n) 0 100.00

Day 12 Sliding Window/Two Pointer
0438 Find All Anagrams in a String Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, String, Hash_Table, Sliding_Window, Big_O_Time_O(n+m)_Space_O(1) 6 99.03

Day 13 Hashmap
0001 Two Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Big_O_Time_O(n)_Space_O(n), AI_can_be_used_to_solve_the_task 2 85.97

Day 14 Stack
0394 Decode String Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, String, Stack, Recursion, Big_O_Time_O(n)_Space_O(n) 1 87.68

Day 15 Heap

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Level 2

Day 1 Implementation/Simulation

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Day 2 String

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Day 3 Linked List
0019 Remove Nth Node From End of List Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Two_Pointers, Linked_List, Big_O_Time_O(L)_Space_O(L) 0 100.00
0234 Palindrome Linked List Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Two_Pointers, Stack, Linked_List, Recursion, Big_O_Time_O(n)_Space_O(1) 6 76.07

Day 4 Linked List
0148 Sort List Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Sorting, Two_Pointers, Linked_List, Divide_and_Conquer, Merge_Sort, Big_O_Time_O(log(N))_Space_O(log(N)) 12 85.82

Day 5 Greedy

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Day 6 Tree
0226 Invert Binary Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(n)_Space_O(n) 0 100.00

Day 7 Tree
0543 Diameter of Binary Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Big_O_Time_O(n)_Space_O(n) 1 65.86
0437 Path Sum III Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Depth_First_Search, Tree, Binary_Tree, Big_O_Time_O(n)_Space_O(n) 18 45.66
0074 Search a 2D Matrix Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Binary_Search, Matrix, Big_O_Time_O(endRow+endCol)_Space_O(1) 0 100.00
0033 Search in Rotated Sorted Array Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Big_O_Time_O(log_n)_Space_O(1) 0 100.00

Day 9 Binary Search Tree
0230 Kth Smallest Element in a BST Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Big_O_Time_O(n)_Space_O(n) 1 78.91

Day 10 Graph/BFS/DFS

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Day 11 Graph/BFS/DFS

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Day 12 Dynamic Programming
0198 House Robber Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n) 0 100.00
0322 Coin Change Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Dynamic_Programming, Breadth_First_Search, Big_O_Time_O(m*n)_Space_O(amount) 17 91.77

Day 13 Dynamic Programming
0416 Partition Equal Subset Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Dynamic_Programming, Big_O_Time_O(n*sums)_Space_O(n*sums) 27 94.53
0152 Maximum Product Subarray Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(N)_Space_O(1) 1 92.31

Day 14 Sliding Window/Two Pointer
0003 Longest Substring Without Repeating Characters Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Sliding_Window, Big_O_Time_O(n)_Space_O(1) 2 99.52
0076 Minimum Window Substring Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Sliding_Window, Big_O_Time_O(s.length())_Space_O(1) 2 99.94

Day 15 Tree
0101 Symmetric Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(log(N)) 0 100.00

Day 16 Design
0155 Min Stack Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Stack, Design, Big_O_Time_O(1)_Space_O(N) 3 100.00
0208 Implement Trie (Prefix Tree) Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Design, Trie, Big_O_Time_O(word.length())_or_O(prefix.length())_Space_O(N) 34 99.90

Day 17 Interval
0056 Merge Intervals Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Big_O_Time_O(n_log_n)_Space_O(n) 8 96.27

Day 18 Stack

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Day 19 Union Find

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Day 20 Brute Force/Backtracking
0039 Combination Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Backtracking, Big_O_Time_O(2^n)_Space_O(n+2^n) 1 100.00
0046 Permutations Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Backtracking, Big_O_Time_O(n*n!)_Space_O(n+n!) 1 95.07

Udemy

Udemy Integers
0136 Single Number Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, Big_O_Time_O(N)_Space_O(1) 1 99.97
0007 Reverse Integer Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_Interview_Questions, Math 1 96.61
0009 Palindrome Number Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Math 5 77.91

Udemy Strings
0003 Longest Substring Without Repeating Characters Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Sliding_Window, Big_O_Time_O(n)_Space_O(1) 2 99.52
0020 Valid Parentheses Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, String, Stack, Big_O_Time_O(n)_Space_O(n) 1 98.78
0005 Longest Palindromic Substring Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n) 7 96.96
0394 Decode String Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, String, Stack, Recursion, Big_O_Time_O(n)_Space_O(n) 1 87.68
0049 Group Anagrams Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, String, Hash_Table, Sorting, Big_O_Time_O(n*k_log_k)_Space_O(n) 6 92.28
0033 Search in Rotated Sorted Array Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Big_O_Time_O(log_n)_Space_O(1) 0 100.00
0153 Find Minimum in Rotated Sorted Array Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Binary_Search, Big_O_Time_O(log_N)_Space_O(log_N) 0 100.00

Udemy Arrays
0121 Best Time to Buy and Sell Stock Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(N)_Space_O(1) 1 100.00
0283 Move Zeroes Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Array, Two_Pointers, Big_O_Time_O(n)_Space_O(1) 2 79.54
0001 Two Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Big_O_Time_O(n)_Space_O(n), AI_can_be_used_to_solve_the_task 2 85.97
0189 Rotate Array Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Two_Pointers, Big_O_Time_O(n)_Space_O(1) 0 100.00
0055 Jump Game Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Greedy, Big_O_Time_O(n)_Space_O(1) 2 79.47
0075 Sort Colors Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Big_O_Time_O(n)_Space_O(1) 0 100.00
0238 Product of Array Except Self Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Prefix_Sum, Big_O_Time_O(n^2)_Space_O(n) 1 100.00
0041 First Missing Positive Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Big_O_Time_O(n)_Space_O(n) 2 57.59
0239 Sliding Window Maximum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Array, Heap_Priority_Queue, Sliding_Window, Queue, Monotonic_Queue, Big_O_Time_O(n*k)_Space_O(n+k) 58 52.28

Udemy Two Pointers
0042 Trapping Rain Water Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Two_Pointers, Stack, Monotonic_Stack, Big_O_Time_O(n)_Space_O(1) 0 100.00
0015 3Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Big_O_Time_O(n*log(n))_Space_O(n^2) 29 82.24

Udemy Famous Algorithm
0053 Maximum Subarray Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Divide_and_Conquer, Big_O_Time_O(n)_Space_O(1) 1 100.00
0169 Majority Element Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Sorting, Counting, Divide_and_Conquer, Big_O_Time_O(n)_Space_O(1) 1 100.00

Udemy Sorting Algorithms

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Udemy 2D Arrays/Matrix
0074 Search a 2D Matrix Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Binary_Search, Matrix, Big_O_Time_O(endRow+endCol)_Space_O(1) 0 100.00
0048 Rotate Image Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Matrix, Big_O_Time_O(n^2)_Space_O(1) 0 100.00
0073 Set Matrix Zeroes Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Matrix, Big_O_Time_O(m*n)_Space_O(1) 1 79.07
0056 Merge Intervals Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Big_O_Time_O(n_log_n)_Space_O(n) 8 96.27

Udemy Linked List
0114 Flatten Binary Tree to Linked List Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Stack, Linked_List, Big_O_Time_O(N)_Space_O(N) 1 75.27
0024 Swap Nodes in Pairs Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Linked_List, Recursion, Big_O_Time_O(n)_Space_O(1) 0 100.00
0142 Linked List Cycle II Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Hash_Table, Two_Pointers, Linked_List, Big_O_Time_O(N)_Space_O(1) 0 100.00
0141 Linked List Cycle Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Two_Pointers, Linked_List, Big_O_Time_O(N)_Space_O(1) 0 100.00
0206 Reverse Linked List Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(N)_Space_O(1) 0 100.00
0021 Merge Two Sorted Lists Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(m+n)_Space_O(m+n) 0 100.00
0160 Intersection of Two Linked Lists Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Two_Pointers, Linked_List, Big_O_Time_O(M+N)_Space_O(1) 1 99.68
0234 Palindrome Linked List Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Two_Pointers, Stack, Linked_List, Recursion, Big_O_Time_O(n)_Space_O(1) 6 76.07
0138 Copy List with Random Pointer Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Linked_List, Big_O_Time_O(N)_Space_O(N) 0 100.00
0025 Reverse Nodes in k-Group Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Linked_List, Recursion, Big_O_Time_O(n)_Space_O(k) 0 100.00
0146 LRU Cache Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Design, Linked_List, Doubly_Linked_List, Big_O_Time_O(1)_Space_O(capacity) 87 50.80

Udemy Tree Stack Queue
0094 Binary Tree Inorder Traversal Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Stack, Big_O_Time_O(n)_Space_O(n) 0 100.00
0102 Binary Tree Level Order Traversal Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(N) 1 91.09
0543 Diameter of Binary Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Big_O_Time_O(n)_Space_O(n) 1 65.86
0226 Invert Binary Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(n)_Space_O(n) 0 100.00
0104 Maximum Depth of Binary Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(H) 0 100.00
0124 Binary Tree Maximum Path Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Depth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(N) 1 99.46
0098 Validate Binary Search Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Big_O_Time_O(N)_Space_O(log(N)) 0 100.00
0236 Lowest Common Ancestor of a Binary Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Big_O_Time_O(n)_Space_O(n) 10 56.51

Udemy Trie and Heap
0208 Implement Trie (Prefix Tree) Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Design, Trie, Big_O_Time_O(word.length())_or_O(prefix.length())_Space_O(N) 34 99.90

Udemy Graph
0200 Number of Islands Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Big_O_Time_O(M*N)_Space_O(M*N) 3 97.76

Udemy Dynamic Programming
0139 Word Break Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Dynamic_Programming, Trie, Memoization, Big_O_Time_O(M+max*N)_Space_O(M+N+max) 2 97.08
0152 Maximum Product Subarray Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(N)_Space_O(1) 1 92.31
0198 House Robber Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n) 0 100.00
0070 Climbing Stairs Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Memoization, Big_O_Time_O(n)_Space_O(n) 0 100.00
0064 Minimum Path Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Dynamic_Programming, Matrix, Big_O_Time_O(m*n)_Space_O(m*n) 0 100.00
0300 Longest Increasing Subsequence Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Dynamic_Programming, Binary_Search, Big_O_Time_O(n*log_n)_Space_O(n) 3 98.63
1143 Longest Common Subsequence Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, String, Dynamic_Programming, Big_O_Time_O(n*m)_Space_O(n*m) 33 46.23
0072 Edit Distance Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, String, Dynamic_Programming, Big_O_Time_O(n^2)_Space_O(n2) 4 90.13
0010 Regular Expression Matching Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_Interview_Questions, String, Dynamic_Programming, Recursion, Big_O_Time_O(m*n)_Space_O(m*n) 1 100.00

Udemy Backtracking/Recursion
0022 Generate Parentheses Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Backtracking, Big_O_Time_O(2^n)_Space_O(n) 0 100.00
0039 Combination Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Backtracking, Big_O_Time_O(2^n)_Space_O(n+2^n) 1 100.00
0078 Subsets Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, Backtracking, Big_O_Time_O(2^n)_Space_O(n*2^n) 1 70.60
0017 Letter Combinations of a Phone Number Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Backtracking, Big_O_Time_O(4^n)_Space_O(n) 0 100.00
0046 Permutations Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Backtracking, Big_O_Time_O(n*n!)_Space_O(n+n!) 1 95.07

Udemy Bit Manipulation
0338 Counting Bits Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Dynamic_Programming, Bit_Manipulation, Big_O_Time_O(num)_Space_O(num) 2 86.73

Udemy Design
0155 Min Stack Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Stack, Design, Big_O_Time_O(1)_Space_O(N) 3 100.00

Data Structure I

Day 1 Array
0053 Maximum Subarray Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Divide_and_Conquer, Big_O_Time_O(n)_Space_O(1) 1 100.00

Day 2 Array
0001 Two Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Big_O_Time_O(n)_Space_O(n), AI_can_be_used_to_solve_the_task 2 85.97

Day 3 Array
0121 Best Time to Buy and Sell Stock Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(N)_Space_O(1) 1 100.00

Day 4 Array

| | | | | | | |-|-|-|-|-|-|-

Day 5 Array
0074 Search a 2D Matrix Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Binary_Search, Matrix, Big_O_Time_O(endRow+endCol)_Space_O(1) 0 100.00

Day 6 String

| | | | | | | |-|-|-|-|-|-|-

Day 7 Linked List
0141 Linked List Cycle Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Two_Pointers, Linked_List, Big_O_Time_O(N)_Space_O(1) 0 100.00
0021 Merge Two Sorted Lists Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(m+n)_Space_O(m+n) 0 100.00

Day 8 Linked List
0206 Reverse Linked List Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(N)_Space_O(1) 0 100.00

Day 9 Stack Queue
0020 Valid Parentheses Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, String, Stack, Big_O_Time_O(n)_Space_O(n) 1 98.78

Day 10 Tree
0094 Binary Tree Inorder Traversal Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Stack, Big_O_Time_O(n)_Space_O(n) 0 100.00

Day 11 Tree
0102 Binary Tree Level Order Traversal Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(N) 1 91.09
0104 Maximum Depth of Binary Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(H) 0 100.00
0101 Symmetric Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(log(N)) 0 100.00

Day 12 Tree
0226 Invert Binary Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(n)_Space_O(n) 0 100.00

Day 13 Tree

| | | | | | | |-|-|-|-|-|-|-

Day 14 Tree
0098 Validate Binary Search Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Big_O_Time_O(N)_Space_O(log(N)) 0 100.00

Algorithms

# Title Difficulty Tag Time, ms Time, %  
1143 Longest Common Subsequence Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, String, Dynamic_Programming, Algorithm_II_Day_17_Dynamic_Programming, Dynamic_Programming_I_Day_19, Udemy_Dynamic_Programming, Big_O_Time_O(n*m)_Space_O(n*m) 33 46.23
0763 Partition Labels Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium String, Hash_Table, Greedy, Two_Pointers, Data_Structure_II_Day_7_String, Big_O_Time_O(n)_Space_O(1) 1 100.00
0739 Daily Temperatures Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Stack, Monotonic_Stack, Programming_Skills_II_Day_6, Big_O_Time_O(n)_Space_O(n) 10 94.99
0647 Palindromic Substrings Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium String, Dynamic_Programming, Big_O_Time_O(n^2)_Space_O(n) 2 98.77
0560 Subarray Sum Equals K Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Hash_Table, Prefix_Sum, Data_Structure_II_Day_5_Array, Big_O_Time_O(n)_Space_O(n) 21 98.97
0543 Diameter of Binary Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Level_2_Day_7_Tree, Udemy_Tree_Stack_Queue, Big_O_Time_O(n)_Space_O(n) 1 65.86
0494 Target Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Array, Dynamic_Programming, Backtracking, Big_O_Time_O(n*(sum+s))_Space_O(n*(sum+s)) 9 79.99
0438 Find All Anagrams in a String Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, String, Hash_Table, Sliding_Window, Algorithm_II_Day_5_Sliding_Window, Programming_Skills_II_Day_12, Level_1_Day_12_Sliding_Window/Two_Pointer, Big_O_Time_O(n+m)_Space_O(1) 6 99.03
0437 Path Sum III Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Depth_First_Search, Tree, Binary_Tree, Level_2_Day_7_Tree, Big_O_Time_O(n)_Space_O(n) 18 45.66
0416 Partition Equal Subset Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Dynamic_Programming, Level_2_Day_13_Dynamic_Programming, Big_O_Time_O(n*sums)_Space_O(n*sums) 27 94.53
0394 Decode String Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, String, Stack, Recursion, Level_1_Day_14_Stack, Udemy_Strings, Big_O_Time_O(n)_Space_O(n) 1 87.68
0347 Top K Frequent Elements Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Hash_Table, Sorting, Heap_Priority_Queue, Counting, Divide_and_Conquer, Quickselect, Bucket_Sort, Data_Structure_II_Day_20_Heap_Priority_Queue, Big_O_Time_O(n*log(n))_Space_O(k) 9 97.93
0338 Counting Bits Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Dynamic_Programming, Bit_Manipulation, Udemy_Bit_Manipulation, Big_O_Time_O(num)_Space_O(num) 2 86.73
0322 Coin Change Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Dynamic_Programming, Breadth_First_Search, Algorithm_II_Day_18_Dynamic_Programming, Dynamic_Programming_I_Day_20, Level_2_Day_12_Dynamic_Programming, Big_O_Time_O(m*n)_Space_O(amount) 17 91.77
0300 Longest Increasing Subsequence Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Dynamic_Programming, Binary_Search, Algorithm_II_Day_16_Dynamic_Programming, Binary_Search_II_Day_3, Dynamic_Programming_I_Day_18, Udemy_Dynamic_Programming, Big_O_Time_O(n*log_n)_Space_O(n) 3 98.63
0295 Find Median from Data Stream Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Sorting, Two_Pointers, Design, Heap_Priority_Queue, Data_Stream, Big_O_Time_O(n*log_n)_Space_O(n) 151 80.24
0287 Find the Duplicate Number Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Binary_Search, Two_Pointers, Bit_Manipulation, Binary_Search_II_Day_5, Big_O_Time_O(n)_Space_O(n) 2 99.82
0283 Move Zeroes Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Array, Two_Pointers, Algorithm_I_Day_3_Two_Pointers, Programming_Skills_I_Day_6_Array, Udemy_Arrays, Big_O_Time_O(n)_Space_O(1) 2 79.54
0240 Search a 2D Matrix II Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Binary_Search, Matrix, Divide_and_Conquer, Data_Structure_II_Day_4_Array, Binary_Search_II_Day_8, Big_O_Time_O(n+m)_Space_O(1) 7 86.73
0239 Sliding Window Maximum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Array, Heap_Priority_Queue, Sliding_Window, Queue, Monotonic_Queue, Udemy_Arrays, Big_O_Time_O(n*k)_Space_O(n+k) 58 52.28
0238 Product of Array Except Self Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Prefix_Sum, Data_Structure_II_Day_5_Array, Udemy_Arrays, Big_O_Time_O(n^2)_Space_O(n) 1 100.00
0236 Lowest Common Ancestor of a Binary Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Data_Structure_II_Day_18_Tree, Udemy_Tree_Stack_Queue, Big_O_Time_O(n)_Space_O(n) 10 56.51
0234 Palindrome Linked List Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Two_Pointers, Stack, Linked_List, Recursion, Level_2_Day_3_Linked_List, Udemy_Linked_List, Big_O_Time_O(n)_Space_O(1) 6 76.07
0230 Kth Smallest Element in a BST Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Data_Structure_II_Day_17_Tree, Level_2_Day_9_Binary_Search_Tree, Big_O_Time_O(n)_Space_O(n) 1 78.91
0226 Invert Binary Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Data_Structure_I_Day_12_Tree, Level_2_Day_6_Tree, Udemy_Tree_Stack_Queue, Big_O_Time_O(n)_Space_O(n) 0 100.00
0221 Maximal Square Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Array, Dynamic_Programming, Matrix, Dynamic_Programming_I_Day_16, Big_O_Time_O(m*n)_Space_O(m*n) 7 72.35
0215 Kth Largest Element in an Array Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Heap_Priority_Queue, Divide_and_Conquer, Quickselect, Data_Structure_II_Day_20_Heap_Priority_Queue, Big_O_Time_O(n*log(n))_Space_O(log(n)) 5 70.82
0208 Implement Trie (Prefix Tree) Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Design, Trie, Level_2_Day_16_Design, Udemy_Trie_and_Heap, Big_O_Time_O(word.length())_or_O(prefix.length())_Space_O(N) 34 99.90
0207 Course Schedule Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Graph, Topological_Sort, Big_O_Time_O(N)_Space_O(N) 3 97.58
0206 Reverse Linked List Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Data_Structure_I_Day_8_Linked_List, Algorithm_I_Day_10_Recursion_Backtracking, Level_1_Day_3_Linked_List, Udemy_Linked_List, Big_O_Time_O(N)_Space_O(1) 0 100.00
0200 Number of Islands Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Algorithm_II_Day_6_Breadth_First_Search_Depth_First_Search, Graph_Theory_I_Day_1_Matrix_Related_Problems, Level_1_Day_9_Graph/BFS/DFS, Udemy_Graph, Big_O_Time_O(M*N)_Space_O(M*N) 3 97.76
0198 House Robber Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Algorithm_I_Day_12_Dynamic_Programming, Dynamic_Programming_I_Day_3, Level_2_Day_12_Dynamic_Programming, Udemy_Dynamic_Programming, Big_O_Time_O(n)_Space_O(n) 0 100.00
0189 Rotate Array Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Two_Pointers, Algorithm_I_Day_2_Two_Pointers, Udemy_Arrays, Big_O_Time_O(n)_Space_O(1) 0 100.00
0169 Majority Element Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Sorting, Counting, Divide_and_Conquer, Data_Structure_II_Day_1_Array, Udemy_Famous_Algorithm, Big_O_Time_O(n)_Space_O(1) 1 100.00
0160 Intersection of Two Linked Lists Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Two_Pointers, Linked_List, Data_Structure_II_Day_11_Linked_List, Udemy_Linked_List, Big_O_Time_O(M+N)_Space_O(1) 1 99.68
0155 Min Stack Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Stack, Design, Data_Structure_II_Day_14_Stack_Queue, Programming_Skills_II_Day_18, Level_2_Day_16_Design, Udemy_Design, Big_O_Time_O(1)_Space_O(N) 3 100.00
0153 Find Minimum in Rotated Sorted Array Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Binary_Search, Algorithm_II_Day_2_Binary_Search, Binary_Search_I_Day_12, Udemy_Binary_Search, Big_O_Time_O(log_N)_Space_O(log_N) 0 100.00
0152 Maximum Product Subarray Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Dynamic_Programming_I_Day_6, Level_2_Day_13_Dynamic_Programming, Udemy_Dynamic_Programming, Big_O_Time_O(N)_Space_O(1) 1 92.31
0148 Sort List Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Sorting, Two_Pointers, Linked_List, Divide_and_Conquer, Merge_Sort, Level_2_Day_4_Linked_List, Big_O_Time_O(log(N))_Space_O(log(N)) 12 85.82
0146 LRU Cache Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Design, Linked_List, Doubly_Linked_List, Udemy_Linked_List, Big_O_Time_O(1)_Space_O(capacity) 87 50.80
0142 Linked List Cycle II Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Hash_Table, Two_Pointers, Linked_List, Data_Structure_II_Day_10_Linked_List, Level_1_Day_4_Linked_List, Udemy_Linked_List, Big_O_Time_O(N)_Space_O(1) 0 100.00
0141 Linked List Cycle Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Two_Pointers, Linked_List, Data_Structure_I_Day_7_Linked_List, Udemy_Linked_List, Big_O_Time_O(N)_Space_O(1) 0 100.00
0139 Word Break Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Dynamic_Programming, Trie, Memoization, Algorithm_II_Day_15_Dynamic_Programming, Dynamic_Programming_I_Day_9, Udemy_Dynamic_Programming, Big_O_Time_O(M+max*N)_Space_O(M+N+max) 2 97.08
0138 Copy List with Random Pointer Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Linked_List, Programming_Skills_II_Day_14, Udemy_Linked_List, Big_O_Time_O(N)_Space_O(N) 0 100.00
0136 Single Number Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, Data_Structure_II_Day_1_Array, Algorithm_I_Day_14_Bit_Manipulation, Udemy_Integers, Big_O_Time_O(N)_Space_O(1) 1 99.97
0131 Palindrome Partitioning Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Backtracking, Big_O_Time_O(N*2^N)_Space_O(2^N*N) 16 65.63
0128 Longest Consecutive Sequence Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Union_Find, Big_O_Time_O(N_log_N)_Space_O(1) 18 91.05
0124 Binary Tree Maximum Path Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Depth_First_Search, Tree, Binary_Tree, Udemy_Tree_Stack_Queue, Big_O_Time_O(N)_Space_O(N) 1 99.46
0121 Best Time to Buy and Sell Stock Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Data_Structure_I_Day_3_Array, Dynamic_Programming_I_Day_7, Level_1_Day_5_Greedy, Udemy_Arrays, Big_O_Time_O(N)_Space_O(1) 1 100.00
0114 Flatten Binary Tree to Linked List Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Stack, Linked_List, Udemy_Linked_List, Big_O_Time_O(N)_Space_O(N) 1 75.27
0105 Construct Binary Tree from Preorder and Inorder Traversal Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Tree, Binary_Tree, Divide_and_Conquer, Data_Structure_II_Day_15_Tree, Big_O_Time_O(N)_Space_O(N) 3 86.35
0104 Maximum Depth of Binary Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Data_Structure_I_Day_11_Tree, Programming_Skills_I_Day_10_Linked_List_and_Tree, Udemy_Tree_Stack_Queue, Big_O_Time_O(N)_Space_O(H) 0 100.00
0102 Binary Tree Level Order Traversal Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Breadth_First_Search, Tree, Binary_Tree, Data_Structure_I_Day_11_Tree, Level_1_Day_6_Tree, Udemy_Tree_Stack_Queue, Big_O_Time_O(N)_Space_O(N) 1 91.09
0101 Symmetric Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Data_Structure_I_Day_11_Tree, Level_2_Day_15_Tree, Big_O_Time_O(N)_Space_O(log(N)) 0 100.00
0098 Validate Binary Search Tree Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Data_Structure_I_Day_14_Tree, Level_1_Day_8_Binary_Search_Tree, Udemy_Tree_Stack_Queue, Big_O_Time_O(N)_Space_O(log(N)) 0 100.00
0096 Unique Binary Search Trees Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Dynamic_Programming, Math, Tree, Binary_Tree, Binary_Search_Tree, Dynamic_Programming_I_Day_11, Big_O_Time_O(n)_Space_O(1) 0 100.00
0094 Binary Tree Inorder Traversal Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Stack, Data_Structure_I_Day_10_Tree, Udemy_Tree_Stack_Queue, Big_O_Time_O(n)_Space_O(n) 0 100.00
0084 Largest Rectangle in Histogram Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Top_Interview_Questions, Array, Stack, Monotonic_Stack, Big_O_Time_O(n_log_n)_Space_O(log_n) 11 98.34
0079 Word Search Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Matrix, Backtracking, Algorithm_II_Day_11_Recursion_Backtracking, Big_O_Time_O(4^(m*n))_Space_O(m*n) 157 78.97
0078 Subsets Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, Backtracking, Algorithm_II_Day_9_Recursion_Backtracking, Udemy_Backtracking/Recursion, Big_O_Time_O(2^n)_Space_O(n*2^n) 1 70.60
0076 Minimum Window Substring Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Sliding_Window, Level_2_Day_14_Sliding_Window/Two_Pointer, Big_O_Time_O(s.length())_Space_O(1) 2 99.94
0075 Sort Colors Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Data_Structure_II_Day_2_Array, Udemy_Arrays, Big_O_Time_O(n)_Space_O(1) 0 100.00
0074 Search a 2D Matrix Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Binary_Search, Matrix, Data_Structure_I_Day_5_Array, Algorithm_II_Day_1_Binary_Search, Binary_Search_I_Day_8, Level_2_Day_8_Binary_Search, Udemy_2D_Arrays/Matrix, Big_O_Time_O(endRow+endCol)_Space_O(1) 0 100.00
0073 Set Matrix Zeroes Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Matrix, Udemy_2D_Arrays/Matrix, Big_O_Time_O(m*n)_Space_O(1) 1 79.07
0072 Edit Distance Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, String, Dynamic_Programming, Algorithm_II_Day_18_Dynamic_Programming, Dynamic_Programming_I_Day_19, Udemy_Dynamic_Programming, Big_O_Time_O(n^2)_Space_O(n2) 4 90.13
0070 Climbing Stairs Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Memoization, Algorithm_I_Day_12_Dynamic_Programming, Dynamic_Programming_I_Day_2, Level_1_Day_10_Dynamic_Programming, Udemy_Dynamic_Programming, Big_O_Time_O(n)_Space_O(n) 0 100.00
0064 Minimum Path Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Dynamic_Programming, Matrix, Dynamic_Programming_I_Day_16, Udemy_Dynamic_Programming, Big_O_Time_O(m*n)_Space_O(m*n) 0 100.00
0062 Unique Paths Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Combinatorics, Algorithm_II_Day_13_Dynamic_Programming, Dynamic_Programming_I_Day_15, Level_1_Day_11_Dynamic_Programming, Big_O_Time_O(m*n)_Space_O(m*n) 0 100.00
0056 Merge Intervals Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Data_Structure_II_Day_2_Array, Level_2_Day_17_Interval, Udemy_2D_Arrays/Matrix, Big_O_Time_O(n_log_n)_Space_O(n) 8 96.27
0055 Jump Game Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Greedy, Algorithm_II_Day_12_Dynamic_Programming, Dynamic_Programming_I_Day_4, Udemy_Arrays, Big_O_Time_O(n)_Space_O(1) 2 79.47
0053 Maximum Subarray Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Divide_and_Conquer, Data_Structure_I_Day_1_Array, Dynamic_Programming_I_Day_5, Udemy_Famous_Algorithm, Big_O_Time_O(n)_Space_O(1) 1 100.00
0051 N-Queens Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Array, Backtracking, Big_O_Time_O(N!)_Space_O(N) 1 100.00
0049 Group Anagrams Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, String, Hash_Table, Sorting, Data_Structure_II_Day_8_String, Programming_Skills_II_Day_11, Udemy_Strings, Big_O_Time_O(n*k_log_k)_Space_O(n) 6 92.28
0048 Rotate Image Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Matrix, Data_Structure_II_Day_3_Array, Programming_Skills_II_Day_7, Udemy_2D_Arrays/Matrix, Big_O_Time_O(n^2)_Space_O(1) 0 100.00
0046 Permutations Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Backtracking, Algorithm_I_Day_11_Recursion_Backtracking, Level_2_Day_20_Brute_Force/Backtracking, Udemy_Backtracking/Recursion, Big_O_Time_O(n*n!)_Space_O(n+n!) 1 95.07
0045 Jump Game II Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Dynamic_Programming, Greedy, Algorithm_II_Day_13_Dynamic_Programming, Dynamic_Programming_I_Day_4, Big_O_Time_O(n)_Space_O(1) 2 49.02
0042 Trapping Rain Water Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Two_Pointers, Stack, Monotonic_Stack, Dynamic_Programming_I_Day_9, Udemy_Two_Pointers, Big_O_Time_O(n)_Space_O(1) 0 100.00
0041 First Missing Positive Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Udemy_Arrays, Big_O_Time_O(n)_Space_O(n) 2 57.59
0039 Combination Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Backtracking, Algorithm_II_Day_10_Recursion_Backtracking, Level_2_Day_20_Brute_Force/Backtracking, Udemy_Backtracking/Recursion, Big_O_Time_O(2^n)_Space_O(n+2^n) 1 100.00
0035 Search Insert Position Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Array, Binary_Search, Algorithm_I_Day_1_Binary_Search, Binary_Search_I_Day_2, Big_O_Time_O(log_n)_Space_O(1) 0 100.00
0034 Find First and Last Position of Element in Sorted Array Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Algorithm_II_Day_1_Binary_Search, Binary_Search_I_Day_5, Big_O_Time_O(log_n)_Space_O(1) 0 100.00
0033 Search in Rotated Sorted Array Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Algorithm_II_Day_1_Binary_Search, Binary_Search_I_Day_11, Level_2_Day_8_Binary_Search, Udemy_Binary_Search, Big_O_Time_O(log_n)_Space_O(1) 0 100.00
0032 Longest Valid Parentheses Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, String, Dynamic_Programming, Stack, Big_O_Time_O(n)_Space_O(1) 1 100.00
0031 Next Permutation Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Array, Two_Pointers, Big_O_Time_O(n)_Space_O(1) 0 100.00
0025 Reverse Nodes in k-Group Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Linked_List, Recursion, Data_Structure_II_Day_13_Linked_List, Udemy_Linked_List, Big_O_Time_O(n)_Space_O(k) 0 100.00
0024 Swap Nodes in Pairs Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Linked_List, Recursion, Data_Structure_II_Day_12_Linked_List, Udemy_Linked_List, Big_O_Time_O(n)_Space_O(1) 0 100.00
0023 Merge k Sorted Lists Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Top_Interview_Questions, Heap_Priority_Queue, Linked_List, Divide_and_Conquer, Merge_Sort, Big_O_Time_O(k*n*log(k))_Space_O(log(k)) 1 100.00
0022 Generate Parentheses Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Backtracking, Algorithm_II_Day_11_Recursion_Backtracking, Udemy_Backtracking/Recursion, Big_O_Time_O(2^n)_Space_O(n) 0 100.00
0021 Merge Two Sorted Lists Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Data_Structure_I_Day_7_Linked_List, Algorithm_I_Day_10_Recursion_Backtracking, Level_1_Day_3_Linked_List, Udemy_Linked_List, Big_O_Time_O(m+n)_Space_O(m+n) 0 100.00
0020 Valid Parentheses Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, String, Stack, Data_Structure_I_Day_9_Stack_Queue, Udemy_Strings, Big_O_Time_O(n)_Space_O(n) 1 98.78
0019 Remove Nth Node From End of List Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Two_Pointers, Linked_List, Algorithm_I_Day_5_Two_Pointers, Level_2_Day_3_Linked_List, Big_O_Time_O(L)_Space_O(L) 0 100.00
0017 Letter Combinations of a Phone Number Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Backtracking, Algorithm_II_Day_11_Recursion_Backtracking, Udemy_Backtracking/Recursion, Big_O_Time_O(4^n)_Space_O(n) 0 100.00
0015 3Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Data_Structure_II_Day_1_Array, Algorithm_II_Day_3_Two_Pointers, Udemy_Two_Pointers, Big_O_Time_O(n*log(n))_Space_O(n^2) 29 82.24
0011 Container With Most Water Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Array, Greedy, Two_Pointers, Algorithm_II_Day_4_Two_Pointers, Big_O_Time_O(n)_Space_O(1) 3 95.71
0010 Regular Expression Matching Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_Interview_Questions, String, Dynamic_Programming, Recursion, Udemy_Dynamic_Programming, Big_O_Time_O(m*n)_Space_O(m*n) 1 100.00
0009 Palindrome Number Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Math, Udemy_Integers 5 77.91
0008 String to Integer (atoi) Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_Interview_Questions, String 1 100.00
0007 Reverse Integer Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_Interview_Questions, Math, Udemy_Integers 1 96.61
0006 Zigzag Conversion Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium String 2 99.60
0005 Longest Palindromic Substring Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Data_Structure_II_Day_9_String, Algorithm_II_Day_14_Dynamic_Programming, Dynamic_Programming_I_Day_17, Udemy_Strings, Big_O_Time_O(n)_Space_O(n) 7 96.96
0004 Median of Two Sorted Arrays Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Hard Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Divide_and_Conquer, Big_O_Time_O(log(min(N,M)))_Space_O(1) 1 100.00
0003 Longest Substring Without Repeating Characters Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Sliding_Window, Algorithm_I_Day_6_Sliding_Window, Level_2_Day_14_Sliding_Window/Two_Pointer, Udemy_Strings, Big_O_Time_O(n)_Space_O(1) 2 99.52
0002 Add Two Numbers Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Medium Top_100_Liked_Questions, Top_Interview_Questions, Math, Linked_List, Recursion, Data_Structure_II_Day_10_Linked_List, Programming_Skills_II_Day_15, Big_O_Time_O(max(N,M))_Space_O(max(N,M)), AI_can_be_used_to_solve_the_task 1 100.00
0001 Two Sum Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C Easy Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Data_Structure_I_Day_2_Array, Level_1_Day_13_Hashmap, Udemy_Arrays, Big_O_Time_O(n)_Space_O(n), AI_can_be_used_to_solve_the_task 2 85.97
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