Reverse Integer

Reverse digits of an integer.
Example1: x = 123, return 321
Example2: x = -123, return -321
click to show spoilers.
Note:
The input is assumed to be a 32-bit signed integer. Your function should return 0 when the reversed integer overflows

---

1、反转整数
2、注意溢出问题就好

class Solution {
public:
int reverse(int x) {
  long  rev=0;

    while(x) {

        rev = rev*10 + x%10;
        x = x/10;
    }
    return (rev>INT_MAX||rev<INT_MIN)?0:rev;

    }
};