LeetCode Reverse Integer

Reverse digits of an integer.

Example1: x = 123, return 321
Example2: x = -123, return -321

 

public class Solution {
    public int reverse(int x) {
            int temp=x;
            int sum=0;
            if (x<0) {
                x=-x;
            }
            if (x==0) {
                return 0;
            }
            while(x%10==0){
                x=x/10;    
            }
            while (x!= 0) {
                sum=sum*10+x%10;
                x=x/10;
            }
            if (temp>0) {
                return sum;
            }
            return 0-sum;
    }
}