7. Reverse Integer

Given a 32-bit signed integer, reverse digits of an integer.

Example 1:

Input: 123
Output:  321
Example 2:
Input: -123
Output: -321
Example 3:
Input: 120
Output: 21

Note:
Assume we are dealing with an environment which could only hold integers within the 32-bit signed integer range. For the purpose of this problem, assume that your function returns 0 when the reversed integer overflows.

class Solution {
    public int reverse(int x) {
        int result = 0;
        
        while ( x != 0) {
            if (Math.abs(result) > 214748364) return 0;
            result = result * 10 + x % 10;
            x = x / 10;
        }
        return result;  
    }
}

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