git-osp-for-beginners icon indicating copy to clipboard operation
git-osp-for-beginners copied to clipboard

Letter Combinations of a Phone Number [C-Solution required]

Open aditya109 opened this issue 3 years ago • 6 comments

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

img

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"]

Constraints:

  • 0 <= digits.length <= 4
  • digits[i] is a digit in the range ['2', '9'].

Reference: https://leetcode.com/problems/letter-combinations-of-a-phone-number/

aditya109 avatar Oct 02 '21 13:10 aditya109

@aditya109 Hi, i'd like to work on this issue.

varnaa avatar Oct 03 '21 06:10 varnaa

Hi @varnaa ! have assigned this issue to you. Before raising a PR, please take a look at CONTRIBUTING.md and follow the guidelines. Also, if it is not too much to ask, please consider starring ⭐ the repository. It helps boost the repo popularity and guide more people towards active contribution. That is all. Happy hacking !

aditya109 avatar Oct 05 '21 16:10 aditya109

I want to work on this issue

Kevinjadia avatar Oct 08 '21 04:10 Kevinjadia

Hi @Kevinjadia ! Sure thing. I have assigned this issue to you. Before raising a PR, please take a look at CONTRIBUTING.md and follow the guidelines. Also, if it is not too much to ask, please consider starring the repository. It helps boost the repo popularity and guide more people towards active contribution. That is all. Happy hacking !

aditya109 avatar Oct 10 '21 05:10 aditya109

Thank you for assigning me this issue Can I use C++ to solve this issue?

Kevinjadia avatar Oct 10 '21 14:10 Kevinjadia

Sorry but you can't. As mentioned in the issue topic, this has to be solved in C. For solving the same in C++, please lay your claim on #409 .

aditya109 avatar Oct 12 '21 16:10 aditya109