DIY: Letter Combinations of a Phone Number
Explore how to generate all letter combinations for a given phone number string using C++. Understand the mapping of digits to letters and develop a function that returns all valid combinations. This lesson helps you tackle common coding interview problems with algorithmic thinking.
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 ...