Reverse a Number Recursively
Reverse the digits of a number.
Input format
A single line with one integer N (0 <= N <= 999999999).
Output format
Print N with its digits reversed. Leading zeros disappear, so 120 becomes 21.
Constraints
- Values fit in a 64-bit signed integer
- Trailing whitespace and a trailing newline are ignored by the judge
Read from stdin, write to stdout. Sample cases below show the exact format.
Sample cases
Example 1
Input
0Expected output
0Example 2
Input
7Expected output
7