LeetCode力扣 7. 整数反转 Reverse Integer 题解代码 JavaScript

问题

​​https://leetcode-cn.com/problems/reverse-integer/​​

练习使用JavaScript解答

/**
 * @param {number} x
 * @return {number}
 */
var reverse = function(x) {
    var flag = (x < 0) ? true : false;
    x = (x < 0) ? -x : x;
    var a = 0;
    while(x > 0) {
        a = a * 10 + x % 10;
        x = Math.floor(x/10);
    }
    a = flag ? -a : a;
    if(a <= Math.pow(-2,31) || a > Math.pow(2,31)-1)
        return 0;
    return a;
};