Python Program to Reverse Number Using Recursive Function

In this Python program, we read number from user and then pass this number to recursive function reverse(). Here function reverse() is recursive because it call itself.

This Python program finds reverse of a given integer number using recursion.

Python Source Code

# Reverse a number using recursion

def reverse(n, r):
    if n==0:
        return r
    else:
        return reverse(n//10, r*10 + n%10)

# Read number
number = int(input("Enter number: "))

# Function call
reversed_number = reverse(number,0)

# Display output
print("Reverse of %d is %d" %(number, reversed_number))

Output

Enter number: 374
Reverse of 374 is 473