LeetCode 刷题:move 一个数组中的所有0 到数组最后

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.
我的解法和想法:
把一个数组中所有非0的数依次往前移,那么剩下的用0填充即可:

class Solution {
public:
    void moveZeroes(vector<int>& nums) {
        //vector<int>::iterator it;
        //for(it=vec.begin)
        int size = nums.size();
        int count = 0;
        for(int i=0; i<size; i++)
        {
            if(nums[i] != 0)
            {
                nums[count++] = nums[i]; 
            }
        }
        
        for(int i= count; i<size; i++)
        {
            nums[i] = 0;
        }
    }
};







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