swapnanildutta / hackerrank-codes

Here are some of the solutions to HackerRank questions.

Hackerrank-Codes

Here are some of the HackerRank Codes. Please try them by yourself and then check them out. These are just to help you understand better.

For Contributing

For contributing, please follow the following instructions :

• While uploading a new piece of code, please mention the HackerRank Question to which that code is being submitted and comment out the question. (Write the entire Question as a comment and then add the code. - PRs which aren't following this won't be considered.)
• Create a pull request with the name of the file you want to add or change, specifying the changes you made.
• Add working codes. Please !
• Raise an issue whenever you find something incorrect.
• Always update the README when you upload a new file.
• Check the other PRs for changes required, else approve them.
• Wait till the PR is checked and merged.
• Be kind.

hackerrank-codes's Issues

Add CPP README

#6

Many answers missing from the algorithms section

Hey there, looks like that there are not many answers in the 'Algorithm' Section of the Repo. I have solved many of the problems and i would like to contribute to this project. May I?

btw here's my hackerrank profile link: https://www.hackerrank.com/0xpurpl3

Update README.md

Some Python Issue

A small existing python code is causing some errors in everyone's PRs (including Reverse PR) , @swapnanildutta Please Check once.

Add Python README

Python README File

Add some Database solutions

Add some Database solutions in directory Database.

Adding Solutions of Hackkerrank questions on Stack Data Structure

Can I add the solutions in C/C++ for questions of Hackerrank->DS->Stack?

Add Algorithms and update the README

Algorithms README File

Add programs for other languages.

Make a folder for a category if not already present.

Add some HackerRank Ruby codes

Add some HackerRank codes in Ruby language in this directory Ruby.

Check the PRs

Please go through the PRs, and review them. If any of them aren't following the rules, request them to change.

Adding Solutions to all Array Questions for Hackerrank

@swapnanildutta Can I add the solutions in C/C++ for all questions of Hackerrank->DS->Arrays?

Greeting Check constantly failing, i dont know the issue!

Build container for action use: '/home/runner/work/_actions/actions/first-interaction/v1/Dockerfile'.
/usr/bin/docker build -t 1e5c35:7bc77f1a00b242128d8728a402cdae9c -f "/home/runner/work/_actions/actions/first-interaction/v1/Dockerfile" "/home/runner/work/_actions/actions/first-interaction/v1"
Sending build context to Docker daemon 180.2kB

Step 1/4 : FROM node:slim
slim: Pulling from library/node
babf97a3f00a: Pulling fs layer
d81eb1809d95: Pulling fs layer
dbaab951a9fa: Pulling fs layer
cb915c1b28b9: Pulling fs layer
7c72cd70a544: Pulling fs layer
cb915c1b28b9: Waiting
7c72cd70a544: Waiting
d81eb1809d95: Verifying Checksum
d81eb1809d95: Download complete
cb915c1b28b9: Verifying Checksum
cb915c1b28b9: Download complete
babf97a3f00a: Verifying Checksum
babf97a3f00a: Download complete
dbaab951a9fa: Verifying Checksum
dbaab951a9fa: Download complete
7c72cd70a544: Verifying Checksum
7c72cd70a544: Download complete
babf97a3f00a: Pull complete
d81eb1809d95: Pull complete
dbaab951a9fa: Pull complete
cb915c1b28b9: Pull complete
7c72cd70a544: Pull complete
Digest: sha256:bf39db19ac53a635030d5db569cab912322147139fbf929c252359f3c50c4207
Status: Downloaded newer image for node:slim
---> 922b09b21278
Step 2/4 : COPY . .
---> e7ffa4544a8c
Step 3/4 : RUN npm install --production
---> Running in 5f0039d32d9c
npm notice
npm notice New patch version of npm available! 7.0.3 -> 7.0.5
npm notice Changelog: https://github.com/npm/cli/releases/tag/v7.0.5
npm notice Run npm install -g [email protected] to update!
npm notice
npm ERR! Maximum call stack size exceeded

npm ERR! A complete log of this run can be found in:
npm ERR! /root/.npm/_logs/2020-10-24T12_38_52_536Z-debug.log
The command '/bin/sh -c npm install --production' returned a non-zero code: 1

Warning: Docker build failed with exit code 1, back off 3.935 seconds before retry.
/usr/bin/docker build -t 1e5c35:7bc77f1a00b242128d8728a402cdae9c -f "/home/runner/work/_actions/actions/first-interaction/v1/Dockerfile" "/home/runner/work/_actions/actions/first-interaction/v1"
Sending build context to Docker daemon 180.2kB

Step 1/4 : FROM node:slim
---> 922b09b21278
Step 2/4 : COPY . .
---> Using cache
---> e7ffa4544a8c
Step 3/4 : RUN npm install --production
---> Running in fb5c4560f188
npm notice
npm notice New patch version of npm available! 7.0.3 -> 7.0.5
npm notice Changelog: https://github.com/npm/cli/releases/tag/v7.0.5
npm notice Run npm install -g [email protected] to update!
npm notice
npm ERR! Maximum call stack size exceeded

npm ERR! A complete log of this run can be found in:
npm ERR! /root/.npm/_logs/2020-10-24T12_38_57_936Z-debug.log
The command '/bin/sh -c npm install --production' returned a non-zero code: 1

Warning: Docker build failed with exit code 1, back off 6.7 seconds before retry.
/usr/bin/docker build -t 1e5c35:7bc77f1a00b242128d8728a402cdae9c -f "/home/runner/work/_actions/actions/first-interaction/v1/Dockerfile" "/home/runner/work/_actions/actions/first-interaction/v1"
Sending build context to Docker daemon 180.2kB

Step 1/4 : FROM node:slim
---> 922b09b21278
Step 2/4 : COPY . .
---> Using cache
---> e7ffa4544a8c
Step 3/4 : RUN npm install --production
---> Running in 57be650f49ce
npm notice
npm notice New patch version of npm available! 7.0.3 -> 7.0.5
npm notice Changelog: https://github.com/npm/cli/releases/tag/v7.0.5
npm notice Run npm install -g [email protected] to update!
npm notice
npm ERR! Maximum call stack size exceeded

npm ERR! A complete log of this run can be found in:
npm ERR! /root/.npm/_logs/2020-10-24T12_39_06_115Z-debug.log
The command '/bin/sh -c npm install --production' returned a non-zero code: 1

Error: Docker build failed with exit code 1

Files scattered, not following the format

The Java section's files are scattered, some are even duplicated.
I already made a PR to fix this, but like for real yesterday, I fixed some next day there's more. They didn't even put up the HR link in README.md
I hope the mods can double-check before approving PRs like that

Using swap_case() function for swapcase problem to decrease the time complexity

def swap_case(s): s=s.swapcase() return s

Add Java HackerRank Dynamic Array Problem

https://www.hackerrank.com/challenges/dynamic-array/problem

Add Hacktober Fest label to this issue and please assign this to me.

Update README

🐛 Python Readme : Index Broken

see mutation bullet point in Python Readme.

Indentation is wrong in - if '__name__'=='__main__'

Indentation is wrong in - if 'name'=='main' in 30 days of python folder.