Python program to call function collatz() until it returns 1

 
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Python program to call function collatz() to return number//2 or 3*number+1 until it returns 1

Problem Definition:

Develop a python program to create a function called collatz() which reads as a parameter named number.

If the number is even it should print and return number//2 and if the number is odd then it should print and return 3*number+1.

The function should keep calling on that number until the function returns a value of 1.

Video Tutorial

Source Code to Python program to call function collatz() until it returns 1

def collatz(num):
    if ( num == 1):
        return
    elif (num % 2 == 0):
        print (num)
        return (collatz(num//2))
    else:
        print (num)
        return (collatz(3*num+1))

num = int (input("Enter the number: "))
collatz(num)

Output

Case 1:

Enter the number: 5

5

16

8

4

2

Case 2:

Enter the number: 6

6

3

10

5

16

8

4

2

Summary:

This tutorial discusses how to write a Python program to call the method named collatz() to return number//2 or 3*number+1 until it returns 1. If you like the tutorial share it with your friends. Like the Facebook page for regular updates and the YouTube channel for video tutorials.

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