Reverse Integer

 1 public class Solution {
 2     public int reverse(int x) {
 3         int result = 0;
 4         boolean flag_neg = false;
 5         if(x < 0){
 6             flag_neg = true;
 7             x = -x;
 8         }
 9         while(x != 0){
10             int temp = x % 10;
11             result = result * 10 + temp;
12             x /= 10;
13         }
14         if(flag_neg)
15             result = -result;
16         return result;
17     
18     }
19 }