Collatz Conjecture Formatting - Printable Version +- Python Forum (https://python-forum.io) +-- Forum: Python Coding (https://python-forum.io/Forum-Python-Coding) +--- Forum: General Coding Help (https://python-forum.io/Forum-General-Coding-Help) +--- Thread: Collatz Conjecture Formatting (/Thread-Collatz-Conjecture-Formatting) Collatz Conjecture Formatting - TreasureDragon - Feb-11-2019 Hi everyone, So I figured out how to set up the technical aspect of the Collatz conjecture as well as making it print out the number of steps. However, I am required to print out everystep numerically ordered. So how do I attach a number in front to show which step it was? Here is an example of what we SHOULD have in total: Enter a number : 22 1. 22 is even , divide in half : 11 2. 11 is odd , multiply by 3 and add 1: 34 3. 34 is even , divide in half : 17 4. 17 is odd , multiply by 3 and add 1: 52 5. 52 is even , divide in half : 26 6. 26 is even , divide in half : 13 7. 13 is odd , multiply by 3 and add 1: 40 8. 40 is even , divide in half : 20 9. 20 is even , divide in half : 10 10. 10 is even , divide in half : 5 11. 5 is odd , multiply by 3 and add 1: 16 12. 16 is even , divide in half : 8 13. 8 is even , divide in half : 4 14. 4 is even , divide in half : 2 15. 2 is even , divide in half : 1 Number of steps : 15 Largest number in sequence : 52 This is what I have that only calculates the process and states the number of steps: ```number = int(input("Enter a number: ")) steps = 0 while number > 1: if number % 2 == 0: number = number / 2 steps += 1 elif number % 2 == 1: number = number * 3 + 1 steps += 1 print(f"\nNumber of steps: {steps}") print(f"Largest number in sequence: {largest}") ``` Ok update: I figured out how to get the number to say what it is and the sequence but now I need help with ordering to see what the largest number was... RE: Collatz Conjecture Formatting - ichabod801 - Feb-11-2019 Set max_num to number at the start of the loop. Each time through the loop, change max_num to number if number is higher than max_num (note: there's a really simple way to do this with the max function). RE: Collatz Conjecture Formatting - TreasureDragon - Feb-11-2019 (Feb-11-2019, 10:34 PM)ichabod801 Wrote: Set max_num to number at the start of the loop. Each time through the loop, change max_num to number if number is higher than max_num (note: there's a really simple way to do this with the max function). Oh I figured it out! Thank you for your help! :)