LeetCode 7: Reverse integer

LeetCode Math

Reverse digits of an integer. Example1: x = 123, return 321 Example2: x = -123, return -321.

代码

int reverse(int x) {
    int res = 0;
    while (x != 0) {
        if (res > INT_MAX/10 ||res < INT_MIN/10) {
            return 0;
        }
        res = x % 10 + res * 10;
        x /= 10;
    }
    return res;
}