283. Move Zeroes

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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

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class Solution {
public:
    void moveZeroes(vector<int>& nums) {
        int j = 0;
    for (int i = 0; i < nums.size(); i++) {
        if (nums[i] != 0) {
            swap(nums[j], nums[i]);
            j++;
        }
    }
      }
};