can I ask syntax about "to half" in recusion function looping, how it works? please share your knowledge

Question

how "to half" works in recursion function?

Answer 1

can you give an example?

Answer 2

see this
https://code.sololearn.com/cqmA9usN5paA/?ref=app

Answer 3

i have never try but i guess you can use an if condition with break . idk i'm guessing