题目:
Reverse digits of an integer.
Example1: x = 123, return 321Example2: 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.
Subscribe to see which companies asked this question.
简单题:就是输入一个数,反转它的数值。如果超过了int32,就return 0
class Solution {public: int reverse(int x) { long long ans=0; if(x==0){ return 0; } else if(x<0){ // ans=ans*(-1); int y=-x; while(y){ int k=y%10; y=y/10; ans=ans*10+k; } if (ans > INT_MAX || ans < INT_MIN){ return 0; } return -ans; } else { int y=x; while(y){ int k=y%10; y=y/10; ans=ans*10+k; } if (ans > INT_MAX || ans < INT_MIN){ return 0; } return ans; } }};
新闻热点
疑难解答