Please explain this(memoization)

Question

I have understood what is memoization but how do i use in in code.And how this code is working?
https://code.sololearn.com/cAA4FMLV7WQ2/?ref=app

Answer 1

Try this out( this is nothing but an altered version of your code) 👇
https://code.sololearn.com/cg6oLja61G6Q/?ref=app