283 remove zero

283.移动零

cpp：

class Solution {
public:
    void moveZeroes(vector<int>& nums)
    {
        int slow = 0;

        for (int fast = 0; fast < nums.size(); fast++)
        {
            if (nums[fast] != 0)
            {
                swap(nums[slow], nums[fast]); //利用库函数交换元素
                slow++;
            }
        }
    }
};