Reverse digits of an integer.
Example1: x = 123, return 321Example2: x = -123, return -321Note: The input is assumed to be a 32-bit signed integer. Your function should return 0 when the reversed integer overflows.
程序代码：
int reverse(int x) { char s[33]; int flag = 1,p,i=0; long long sum = 0; if(x<0) { if(x==INT_MIN) //注意x==INT_MIN时的处理 return 0; flag = -1; x = -x; } while(x) { p = x%10; s[i++] = p+'0'; x/=10; } s[i] = '/0'; i=0; while(s[i]!='/0') { sum = sum*10 + s[i] - '0'; if(sum>INT_MAX) { sum = 0; break; } i++; } sum = sum * flag; return sum;}新闻热点
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