[LeetCode] Reverse Integer

Reverse digits of an integer.

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

class Solution {
public:
    int reverse(int x) {
        int s=0;
        while(x!=0)
        {
            s=s*10+x%10;
            x=x/10;
        }
        return s;
    }
};