Skip to content
Navigation Menu
Sign in
Products
Platform
GitHub
Repository hosting, code review, and collaboration
Copilot
AI coding agent for tasks, projects, and automated work
Build & Ship
Actions
CI/CD and automation
Code Quality
Quality analysis, fixes, and enforcement
Codespaces
Cloud development environments
Secure
Code Security
Vulnerability detection and remediation
Secret Protection
Secret scanning and leak prevention
All Features
Developers
Learn
Documentation
Training
Certifications
Build
Build with Copilot
Customize Copilot
Integrations
Explore
Trending repos
GitHub Sponsors
Developer articles
Changelog
Changelog
Your source for the latest features, improvements, and fixes across GitHub products, all in one place.
Businesses
By Stage
Enterprises
Team
Startups
Nonprofits
By Industry
Healthcare
Financial services
Manufacturing
Government
See all industries
Evaluate GitHub
Why GitHub
Customer Stories
Business insights
Trust Center
Add-ons
GitHub Advanced Security
Enterprise-grade code security
Copilot for business
Enterprise-grade AI features
Premium Support
Enterprise-grade 24/7 support
Resources
Learn & Connect
Documentation
Resource center
Blog
Events & webinars
Community Forum
Customer Stories
Integrations
Support
Customer support
Training
GitHub Status
Company
About
Partners
Changelog
GitHub Universe
GitHub Universe
The event for developers, by developers — talks, workshops, and what’s next for GitHub.
Pricing
Search
/
Sign in
Sign up
Appearance settings
You signed in with another tab or window.
Reload
to refresh your session.
You signed out in another tab or window.
Reload
to refresh your session.
You switched accounts on another tab or window.
Reload
to refresh your session.
Dismiss alert
{{ message }}
anishLearnsToCode
hackerrank-java
Repository navigation
Code
Issues
Pull requests
Actions
Projects
Security and quality
Insights
More
items
Files
Expand file tree
master
Breadcrumbs
hackerrank-java
/
src
/
Copy path
Directory actions
More options
More options
Directory actions
More options
More options
Latest commit
History
History
History
master
Breadcrumbs
hackerrank-java
/
src
/
Copy path
Top
Folders and files
Name
Name
Last commit message
Last commit date
parent directory
..
helper
helper
CanYouAccess.java
CanYouAccess.java
Color.java
Color.java
CovariantReturnTypes.java
CovariantReturnTypes.java
Java1DArray.java
Java1DArray.java
Java1DArrayPartII.java
Java1DArrayPartII.java
Java2dArray.java
Java2dArray.java
JavaAbstractClass.java
JavaAbstractClass.java
JavaAnagrams.java
JavaAnagrams.java
JavaAnnotations.java
JavaAnnotations.java
JavaArraylist.java
JavaArraylist.java
JavaBigDecimal.java
JavaBigDecimal.java
JavaBigInteger.java
JavaBigInteger.java
JavaBitset.java
JavaBitset.java
JavaComparator.java
JavaComparator.java
JavaCurrencyFormatter.java
JavaCurrencyFormatter.java
JavaDatatypes.java
JavaDatatypes.java
JavaDateAndTime.java
JavaDateAndTime.java
JavaDeQueue.java
JavaDeQueue.java
JavaEndOfFile.java
JavaEndOfFile.java
JavaExceptionHandling.java
JavaExceptionHandling.java
JavaExceptionHandlingTryCatch.java
JavaExceptionHandlingTryCatch.java
JavaFactoryPattern.java
JavaFactoryPattern.java
JavaGenerics.java
JavaGenerics.java
JavaHashset.java
JavaHashset.java
JavaIfElse.java
JavaIfElse.java
JavaInheritanceI.java
JavaInheritanceI.java
JavaInheritenceII.java
JavaInheritenceII.java
JavaInstanceofKeyword.java
JavaInstanceofKeyword.java
JavaIntToString.java
JavaIntToString.java
JavaInterface.java
JavaInterface.java
JavaIterator.java
JavaIterator.java
JavaLambdaExpression.java
JavaLambdaExpression.java
JavaList.java
JavaList.java
JavaLoopsI.java
JavaLoopsI.java
JavaLoopsII.java
JavaLoopsII.java
JavaMap.java
JavaMap.java
JavaMethodOverriding.java
JavaMethodOverriding.java
JavaMethodOverridingIISuperKeyword.java
JavaMethodOverridingIISuperKeyword.java
JavaOutputFormatting.java
JavaOutputFormatting.java
JavaPrimalityTest.java
JavaPrimalityTest.java
JavaPriorityQueue.java
JavaPriorityQueue.java
JavaReflectionAttributes.java
JavaReflectionAttributes.java
JavaRegex.java
JavaRegex.java
JavaRegexIIDuplicateWords.java
JavaRegexIIDuplicateWords.java
JavaSHA_256.java
JavaSHA_256.java
JavaSingletonPattern.java
JavaSingletonPattern.java
JavaSort.java
JavaSort.java
JavaStack.java
JavaStack.java
JavaStaticInitializerBlock.java
JavaStaticInitializerBlock.java
JavaStdInAndStdOutI.java
JavaStdInAndStdOutI.java
JavaStdInAndStdOutII.java
JavaStdInAndStdOutII.java
JavaStringReverse.java
JavaStringReverse.java
JavaStringTokens.java
JavaStringTokens.java
JavaStringsIntroduction.java
JavaStringsIntroduction.java
JavaSubArray.java
JavaSubArray.java
JavaSubstring.java
JavaSubstring.java
JavaSubstringComparison.java
JavaSubstringComparison.java
JavaVarArgsSimpleAddition.java
JavaVarArgsSimpleAddition.java
JavaVisitorClass.md
JavaVisitorClass.md
MD5.java
MD5.java
PatternSyntaxChecker.java
PatternSyntaxChecker.java
PrimeChecker.java
PrimeChecker.java
TagContentExtractor.java
TagContentExtractor.java
TagContentExtractor.txt
TagContentExtractor.txt
ValidUsernameRegularExpression.java
ValidUsernameRegularExpression.java
WelcomeToJava.java
WelcomeToJava.java
View all files
You can’t perform that action at this time.