Reversing a Number using Recursion
Detailed guide and Python implementation for the 'Reversing a Number using Recursion' problem.
Problem Statement
Write a function reverse_number(n) that reverses the digits of a given non-negative integer n using recursion and returns the reversed number as an integer. For example, 1234 becomes 4321. Leading zeros in the reversed result should be dropped (e.g., 1200 reversed is 21).
- •0 <= n <= 10^9
Examples
n = 1234
4321
The digits 1, 2, 3, 4 are reversed to 4, 3, 2, 1 giving 4321.
n = 1200
21
Reversed digits are 0, 0, 2, 1. Leading zeros are dropped, giving 21.
n = 5
5
A single digit number reversed is itself.
Need a Hint?
Edge Cases to Watch
- Empty input structures
- Single element inputs
- Large numerical bounds
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