Letter Combinations of a Phone Number

Google-Developer-Student-Club-CCOEW / Competitive-Programming-2023-GDSC-CUMMINS-X-GDSC-MMCOE

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Write code in the preferred language and attach output with it.

Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number could represent. Return the answer in any order.

A mapping of digits to letters (just like on the telephone buttons) is given below. Note that 1 does not map to any letters.

Example 1:

Input: digits = "23" Output: ["ad","ae","af","bd","be","bf","cd","ce","cf"]

Example 2:

Input: digits = "" Output: []

Example 3:

Input: digits = "2" Output: ["a","b","c"]

Google-Developer-Student-Club-CCOEW / Competitive-Programming-2023-GDSC-CUMMINS-X-GDSC-MMCOE

Letter Combinations of a Phone Number #77

Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number could represent. Return the answer in any order.