rahulsain / hackerrank_30daysofcode Goto Github PK

30 days of code solution in C++/JAVA/C/Python/JavaScript/C#

Home Page: https://www.hackerrank.com/domains/tutorials/30-days-of-code

License: GNU General Public License v3.0

C++ 9.08% Python 6.71% JavaScript 10.25% Java 9.81% C 8.84% C# 8.58% Go 12.20% PHP 6.97% TypeScript 6.64% Swift 5.56% Julia 1.60% Rust 3.78% Kotlin 2.50% Dart 1.09% Scala 3.21% Ruby 3.17%

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hackerrank_30daysofcode's Introduction

Hackerrank_30daysOFcode

Repository for Hackerrank 30 Days of Code
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NOTE: Before creating a Pull Request, make sure you add ✅ to Completed or if it can not be execute in that particular language then add ❌ to Completed in that particular problem. Failing to do so will mark your PR as invalid and won't be counted in hactoberfest inspite of any good contribution. Due to increase of PR and the repo being highlighted by Hactoberfest itself on their website, we are going to take only those contributions which have updated the readme as per your PR changes.

Introduction

Thirty days of code by Hacker rank is aimed at improving your coding skills by coding for 30 days in a row. You can also unlock a new code challenge and tutorial each day and then, submit solutions in Java, C++ and other popular languages. But, this can prove to be quite a difficult task at times. So, here are some solutions for you to go through.

Introduction
Table of Contents

Solutions

NOTE: First, try to solve it on your own. If facing some difficulty, you can see this.

Completed

✅ ⇒ Completed

❌ ⇒ Invalid/Cannot be implemented

Day	Problem Statement	Python	C	C++	Java	Javascript	Go	C#	PHP	TypeScript	Swift	Julia	Kotlin	Rust	Scala	Dart	Ruby
00	Hello, World.	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅
01	Data Types	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	❌	✅	✅	✅	✅
02	Operators	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅
03	Intro to Conditional Statements	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅
04	Class vs. Instance	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	❌	✅	✅	✅	✅
05	Loops	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅
06	Let's Review	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	❌	✅
07	Arrays	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	❌	✅
08	Dictionaries and Maps	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	❌	✅
09	Recursion 3	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅		✅	❌	✅
10	Binary Numbers	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅		✅	✅	✅
11	2D Arrays	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅		❌	✅
12	Inheritance	✅	✅	✅	✅	✅	❌	✅	✅	✅	✅	❌	❌	✅	❌	❌	✅
13	Abstract Classes	✅	❌	✅	✅	✅	❌	✅	✅	✅	❌	❌	❌	❌	❌	❌	✅
14	Scope	✅	✅	✅	✅	✅	❌	✅	✅	✅	✅	❌	❌	❌	❌	❌	❌
15	Linked List	✅	✅	✅	✅	✅	❌	✅	✅	✅	✅	❌	❌	❌	❌	❌	✅
16	Exceptions - String to Integer	✅	❌	✅	✅	✅	❌	✅	✅	✅	✅	❌	❌	❌	❌	✅
17	More Exceptions	✅	❌	✅	✅	✅	✅	❌	✅	✅	✅	❌	❌	❌		❌	✅
18	Queues and Stacks	✅	✅	✅	✅	✅	❌	✅	✅	✅	✅	❌	❌	❌	✅	❌	✅
19	Interfaces	✅	❌	✅	✅	✅	❌	✅	✅	✅	❌	❌	❌	❌	❌	❌	❌
20	Sorting	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅			❌	✅
21	Generics	✅	❌	✅	✅	✅	✅	✅	❌	✅	✅	❌	❌	❌	❌	❌	❌
22	Binary Search Trees	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	❌	❌	❌	❌	❌
23	BST Level-Order Traversal	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	❌	❌	❌	❌	❌
24	More Linked Lists	✅	✅	✅	✅	✅	❌	✅	✅	✅	✅	❌	❌	❌	❌	❌
25	Running Time and Complexity	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅		❌	✅		✅
26	Nested Logic	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅		✅			❌	✅
27	Testing	✅	❌	✅	✅	❌	❌	❌	❌	✅	❌	❌	❌	❌	❌	❌	❌
28	RegEx, Patterns, and Intro to Databases	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅		✅			❌
29	Bitwise AND	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅		✅	✅	✅	❌	✅

About The Repo

This is a repository aiming to provide solutions for 30 days code challenge (2020) conducted on Hackerrank. The solutions are available in major languages like C, C++, Python, Go ,Java ,C#, Javascript, PHP, Typescript and Swift as of now. It is a great platform for users to contribute and provide the solutions in other languages too.

EDIT: Happy to annouce that due in increase in contribution in this repo, our repo has been highlighted on Hacktoberfest site itself.

Credits

To all the contributors/collaborators out there spending there time to make valuable contribution in this beginner friendly repo and special thanks to DigitalOcean for organizing such an awsome fest with Intel and DEV on GitHub. This fest has helped beginners to join/learn how open source works.

Looking forward for more contribution in this community. Happy coding!

hackerrank_30daysofcode's People

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alvinma exter-dg h4rz vedanttttt sumitt1080 kajalkare17 sravyasri2001 lavanyamanohar11 kishorkadam217 shibrahmachari siddharthrajaraja domitechnshimba rahul171201 swap1010 abhishek4uh milanj-1 kshitij9896 shalyavarnika suah0205 amishaagarwal1998 viren-vii bishthimesh rashakdude sawwwrabhp gouravsingh2580 sdoss93212 bharathwaj3003 ayomal98 manvij30 rishikasoni67 ishita15112001 harshit564 update-ankur bawa2510 rsrahul1000 hnishal hitha24 saifuljnu shinigami-daikou amosaidoo vasavraj akhilbonagiri8465 whitewolf1905 sriansu viasmit rahulkranjan anproghub krishnashenoy123 bhavidhingra hasbrovish muskanapp anamkhxn mzainuddin51 chidu2000 prakharpande sanskar1812 yoyogi009 fluidmarrow anirudhvsp amitagarwalaa57 dheero shreyas12345678 pandasamanvaya sunnysetia93 brigadierpratap coder49 arshlakhina piyushnagpal80 pkpawankushwaha aryamansinghk subrata3112 gauravpoosarla praveena1809 gajjarmiten raj0710 preethamrn coder-023 ritik2703 venkatvuddagiri yash982000 archana-1209 7vikpeculiar vaibhavds19 nikolatechie abhibratasarkar kapiljaingit02 merdhruv darkcoder13 swagatikapanda123 itsanonymousgeek megatron100 sgopinath89 sandeep228 arnav-roy aastha0507 faabiopontes jehunseo nayaknavin mishraaditya20142014 adityajsingh

hackerrank_30daysofcode's Issues

complete this series in Python

if you want to collaborate with other you can discuss there.

please note make a folder and name it "Hackerrank_30daysOFcode_in_Python"

note that I have already assigned this issue to some people in #2 so they are preferred first as they were already working on this issue

Add explanation comments on day 03 js

Hello, I would like to add an explanation comment on the Javascript sections day03. Is it okay? Thank you

readme not properly formatted!

complete this series in any other langauge that is not mentioned in issue section

if you want to collaborate with other you can discuss there.

please note make a folder and name it "Hackerrank_30daysOFcode_in_your_language"

note that I have already assigned this issue to some people in #2 so they are preferred first as they are already working on this issue

Review Increased

My review has been increased to 6 days more.I made only one extra pull request so why does it happen

runtime error

hey i have error on day0.cpp and day1.cpp please take a min and help me to solve the code

please read contributing.md for more details.

C/C++ Solution Updations

Hello,
I am planning to update some C/C++ codes.
Pls accept.
Thanks.

Improve readability in README

I'm thinking to add a tabular format in readme.md where each problem name will be present with their link to Hackerrank's website, their status whether it is implemented or not in a particular language.

Eg.

Day	Problem Statement	Python	C	C++	Java	Javascript
00	Hello, World.	✅

Assign it to me, if you find this valid.

Implement the Data Structures in C

Sir kindly assign this issue to me.

Complete the codes which are left

Complete the codes which are left blank on readme file on any language

make sure to ✅ those problem on readme file too

Completing the left questions in Python

I am solving all those which are left for python

I want to add a resource folder for programming books

Hackerrank_30daysOFcode Contribution

Excited to contribute

void problem in code

please update the day2.cpp and day3.cpp file with error resolved

Add tick mark in README.md file

Please mark tick and cross to respective problem, make sure to read readme file before making a PR.
Opened this issue to help beginners in the fest.

Writing Comments and printing statements for instructing

Writing Comments so that the user can understand the question easily
and printing statements instructing user what value to enter next thereby making the
the task of entering values for variables very much easier.

complete this series in java

if you want to collaborate with other you can discuss there.

please note make a folder and name it "Hackerrank_30daysOFcode_in_Java"

note that I have already assigned this issue to some people in #2 so they are preferred first as they are already working on this issue

Update day10.py

I am planning to update solution code for question 10 in python language.
Please assign it to me!

Add an explanation comments to day 09 on 30daysOFcode_Javascript

Hello, I would like to add an explanation comments to day 09 on 30daysOFcode_Javascript. Thank you.

complete this series in Go

please complete remaining code in Go

complete this series in Javascript

please complete remaining code in JS

complete this series in C#

please complete remaining code in C#

complete this series in Php

day0 to day6 solutions are added...complete other code in Php

Day 20: Sorting in Swift

I would like to work on the "Day 20: Sorting" solution in Swift programming language.

updation of links in readme

any improvement for readme file is most welcome here

compiler error

hey i have error on day4.cpp and day5.cpp please take a min and help me to solve the code

please read contributing.md for more details.

Create links to the files with :white_check_marks:

I wish to propose an enhancement for the README.md file, we can have links attached to the ✅ , such that it leads to the desired solution in the preferred language

Example: Click on the tick mark for Day 5's solution in swift ✅

Updating the Python codes to reduce the time complexity

Hi I am planning to update the Python and C++ Codes.
I can work on reducing the time complexity of all the 30 problems.
So, please assign this to me.

Complete this series in Scala

I want to contribute on this, can you please assign it to me?

Urgent- ASAP

Need someone who could update contribution guidelines at CONTRIBUTING.md

Complete C# problems

Hello, it's missing three C# problems. From these two can be solved. I'd like to complete them.

And a suggestion to the problems that can't be solved. Why don't use a different symbol like ✖️, ⛔ or 🚫, so we can differ the problems that are missing from the ones that can't be solved.

Join our Discord Server

https://discord.gg/XS9NvNt

Add questions to the code

It would be better if questions are present in the code as comments.

add cross to readme file

Please add ❌ to all the problem which cant be done on that particular language at Hackerrank.

Note: Only apply cross to the problem which dont have ✅ in it. In other words, to incomplete problem

Testing for Javascript Solutions

Hi
I would like to add test cases for existing JS solutions.

1. Will be adding a test folder in the 30daysOFcode_JavaScript.
2. Separate test case file for each solution.

Please assign this issue to me. I'll pick this up.

Thanks

Day 22 in JavaScript

Pl. assign this issue to me.

complete the 30-days code solution

anyone interested can help by completing solution of this series or providing 30day code solution in any other language(Java, C, Python is preferred)

complete this series in c++

if you want to collaborate with other you can discuss there.

please note make a folder and name it "Hackerrank_30daysOFcode_in_C++"

note that I have already assigned this issue to some people in #2 so they are preferred first as they are already working on this issue

Error showing 0!(factorial) it stucks up in a recursive loop

In the 30Days_Of_Code_Java in day9.java contains a recursive code in which the factorial is to found out but when finding zero factorial it ends up in being in an endless loop.

Discord server link

https://discord.gg/HdPxjU

day 14 error

day 15 error

help in code

hey i have error on day8.cpp and day9.cpp please take a min and help me to solve the code

please read contributing.md for more details.

SOLVING PROBLEMS IN JAVA

hello Sir, I am planning to solve the problems using JAVA.

error in code

hey i have error on day12.cpp and day13.cpp please take a min and help me to solve the code

please read contributing.md for more details.

Change files' naming convention

Change files' naming convention to make it sorted correctly for GitHub GUI users, as you can see in the picture below the files are not sorted by the number of the day (day2.cpp comes after day19.cpp, etc.) but lexicographically.

for many GitHub GUI users, it can mislead them in searching for a specific file.

suggested solution: add a leading zero to all single-digit files,
for example, "day2.extension" is changed to "day02.extension".

you can add this naming convention to the contribution style convention.

complete this series in c

if you want to collaborate with other you can discuss there.

please note make a folder and name it "Hackerrank_30daysOFcode_in_C"

note that I have already assigned this issue to some people in #2 so they are preferred first as they are already working on this issue

rahulsain / hackerrank_30daysofcode Goto Github PK

hackerrank_30daysofcode's Introduction

Hackerrank_30daysOFcode

Introduction

Table of Contents

Solutions

Completed

About The Repo

Credits

hackerrank_30daysofcode's People

Contributors

Stargazers

Watchers

Forkers

hackerrank_30daysofcode's Issues

Example: Click on the tick mark for Day 5's solution in swift ✅

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