LeetCode-in-All
283. Move Zeroes
Easy
Given an integer array nums, move all 0’s to the end of it while maintaining the relative order of the non-zero elements.
Note that you must do this in-place without making a copy of the array.
Example 1:
Input: nums = [0,1,0,3,12]
Output: [1,3,12,0,0]
Example 2:
Input: nums = [0]
Output: [0]
Constraints:
1 <= nums.length <= 104-231 <= nums[i] <= 231 - 1
Follow up: Could you minimize the total number of operations done?
Solution
class Solution {
void moveZeroes(List<int> nums) {
int firstZero = 0;
for (int i = 0; i < nums.length; i++) {
if (nums[i] != 0) {
_swap(firstZero, i, nums);
firstZero++;
}
}
}
void _swap(int index1, int index2, List<int> numbers) {
int temp = numbers[index2];
numbers[index2] = numbers[index1];
numbers[index1] = temp;
}
}