Are you up for a challenge.

Question

Write a progam that reduces a number to a single character.
For example, if you input 138,
1 * 3 * 8 = 24
2 * 4 = 8
Then when when you get only one character in the end and stop.

https://code.sololearn.com/c5N3RF3InBgR/?ref=app

Answer 1

Here's the best I could do in a rush.

https://code.sololearn.com/chkxqihOgJsK/?ref=app

(I couldn't figure out how to make the "n*n" extend for numbers with more than two digits so if anyone could help me out there)