10: Reverse integer
Write a method to reverse digits of an integer
Example 1
Input: 12
Output: 21
Example 2
Input: -12
Output: -21
Note: return
-1
when the reversed integer overflows
Write a method to reverse digits of an integer
Example 1
Input: 12
Output: 21
Example 2
Input: -12
Output: -21
Note: return
-1
when the reversed integer overflows