Could anyone explain this code? I'm lost...

Question

https://code.sololearn.com/c97Sczefz3o8/?ref=app

Answer 1

Junior Coder

That's called recursion which means call function again and again untill the condition met so in else part we are calling function and adding 1st character each time in reverse order.

spell(txt[1:]) + txt[0]

Suppose you have entered 'anant'

Here 1st character is 'a'
and txt[1:] will give nant

So spell('nant') + 'a'

Now here 1st character is n

And 'nant'[1:] = 'ant'

So now spell('ant') + 'n' + 'a'

Just repeat it untill txt become ''' means empty

So spell('nt') + 'a' + 'n' + 'a'
spell('t') + 'n' + 'a' + 'n' + 'a'
't' + 'n' + 'a' + 'n' + 'a'
= tnana

Answer 2

A͢J Thanks 👍