移动零

class Solution {
public:
void moveZeroes(vector<int>& nums) {
    int dest = -1;
    int cur = 0;
    while(cur < nums.size())
    {
        if (nums[cur] != 0)
        {
            dest++;
            swap(nums[cur], nums[dest]);
        }
            cur++;
    }
}
};