题目:
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:
- You must do this in-place without making a copy of the array.
- Minimize the total number of operations.
分析:
将0移到最后,很简单的一道题,但是有一点就是在循环中一定要注意在使用vector的erase函数时的判断,否则很容易超时
代码:
class Solution {
public:
void moveZeroes(vector<int>& nums) {
int size=nums.size();
int i=0;
vector<int>::iterator it=nums.begin();
while(it!=nums.end()&&i<size){
if(*it==0){
it=nums.erase(it);
nums.push_back(0);
}
else it++;
i++;
}
}
};