Letter Combinations of a Phone Number - Leetcode 17 - Recursive Backtracking (Python)

[@GregHogg]

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[@GarouNguyen]

bro I don't undrstand but bro thank you I'll watch this playlist again

[@rogerthat7190]

This was so well explained!

[@Alex-fe4dr]

Hi, I don't understand the pop. if I append ['a'] then go on to append ['a','d'], ['a','e'], ['a','f'] then when I pop how do I not pop ['a','f'] since it was the last thing added?

[@testingaccount-x9b]

Space complexity here I think is wrong. Should be 4^n not just n.

[@GarouNguyen]

bro i watch playlist of you about refursion but i still don't understand jus tundrstand 60% of it

[@GregHogg]

It will eventually click :)