Leetcode Reverse Integer

Reverse digits of an integer.

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

Difficulty: Easy

public class Solution {
public int reverse(int x) {
boolean isNeg = false;
if(x < 0) isNeg = true;
x = Math.abs(x);
double ans = 0;
while(x != 0){
ans = ans*10 + x%10;
x = x/10;
}
if(ans > Integer.MAX_VALUE || ans < Integer.MIN_VALUE)
return 0;
if(isNeg) return -(int)(ans);
return (int)(ans);
}
}