LeetCode OJ ：Move Zeroes (移动0)

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.

这个移动必须是在原地一动，不能借助其他的容器。

基本的思想是将所有的不是0的数都往前移动，最后在根据容器的最初大小补上0就可以了

 #include <vector>
 using namespace std;
 class Solution{
 public:
     void moveZeros(vector<int> & nums){
         auto sz = nums.size();
         int pos = ;
         for (int i = ; i < sz; ++i){
             if (nums[i] != )
                 nums[pos++] = nums[i];
         }
         for (int i = pos; i < sz; ++i)
             nums[i] = ;
     }
 };

大体上就是这样

java版本代码如下：

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