leetcode-hot100/test004.cpp

class Solution {
public:
    void moveZeroes(vector<int>& nums) {
        int len = nums.size();
        int index = 0;
        for(int i = 0; i < len; i++){
            if(nums[i]) nums[index++] = nums[i];
        }
        while(index < len) nums[index++] = 0;
    }
};