LeetCode---7. Reverse Integer

Reverse digits of an integer.

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

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//翻转过来可能会溢出

Input:1534236469

Output:1056389759

Expected:0

public class Solution {    public int reverse(int x) {        long tmp = x;        // 防止结果溢出        long result = 0;        while (tmp != 0) {            result = result * 10 + tmp % 10;            tmp = tmp / 10;        }        // 溢出判断         if (result < Integer.MIN_VALUE || result > Integer.MAX_VALUE) {            result = 0;        }        return (int) result;    }}