[leetcode] 92 integer inversion

Want to make APP Same thing as WeChat , Can run small programs smoothly ？ | Experience will send you to Xinjiang 、 Huawei 、 Cherry keyboard ！>>>

subject ：

Their thinking ：

Pop and push numbers & Check before spillage

https://leetcode-cn.com/problems/reverse-integer/solution/zheng-shu-fan-zhuan-by-leetcode/

Code ：

package com.janeroad;

/**
* Created on 2020/11/9.
*
* [@author](https://my.oschina.net/arthor) LJN
*/
public class LC142 {
public static void main(String[] args) {
    System.out.println(reverse(1999));
}
public static int reverse(int x) {
    int rev = 0;
    while (x != 0) {
        int pop = x % 10;
        x /= 10;
        if (rev > Integer.MAX_VALUE/10 || (rev == Integer.MAX_VALUE / 10 && pop > 7)) return 0;
        if (rev < Integer.MIN_VALUE/10 || (rev == Integer.MIN_VALUE / 10 && pop < -8)) return 0;
        rev = rev * 10 + pop;
    }
    return rev;
}


}