LC283 Move Zeroes

Given an array nums, write a function to move all 0's to the end of it while maintaining the relative order of the non-zero elements.

For example, given nums = [0, 1, 0, 3, 12], after calling your function, nums should be [1, 3, 12, 0, 0].

Note:

1. You must do this in-place without making a copy of the array.
2. Minimize the total number of operations.

public class Solution {
    public void moveZeroes(int[] nums) {
        int n = nums.length;
        int cnt = 0;
        for(int i = 0; i < n; i++){
            if(nums[i] != 0){
                nums[cnt] =nums[i];
                cnt++;
            }
        }
        for(int i = cnt; i < n; i++){
            nums[i] = 0;
        }
    }
}

find non-zero first, then put them according the relative order. set the rest with '0'