LeetCode Reverse Integer

题目链接：https://oj.leetcode.com/problems/reverse-integer/

Reverse digits of an integer.

Example1: x = 123, return 321
Example2: x = -123, return -321

不解释

class Solution {public:    int reverse(int x) {        bool flag=false;        if(x<0) flag=true;        x=abs(x);        int ans=0;        while(x)        {            ans=ans*10+x%10;            x/=10;        }        if(flag)            ans=-ans;        return ans;    }};