Letter Combinations of a Phone Number
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.
Letter Combinations of a Phone Number

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.

Example 1:
Input: {"digits":"23"}
Output: ["ad","ae","af","bd","be","bf","cd","ce","cf"]
Input
arr ={"digits":"23"}

Start

Input:

2

abc

3

def
Current Combination
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