DIY: Letter Combinations of a Phone Number
Explore how to generate all possible letter combinations from a string of digits between 2 and 9. This lesson teaches you to implement the letterCombinations function, improving your skills in mapping digit inputs to letter outputs, an essential coding interview problem.
We'll cover the following...
We'll cover the following...
Problem statement
Given a string containing digits from 2–9 inclusive, return all the possible letter combinations that the number could represent. Return the answer in any ...