HackerRank

Java

Subdomain	Challenge	Solution
Introduction	Welcome to Java!	WelcomeToJava.java
Introduction	Java Stdin and Stdout I	StdinAndStdout_I.java
Introduction	If-Else	IfElse.java
Introduction	Stdin and Stdout II	StdiAandStdout_II.java
Strings	String Tokens	Tokens.java
Strings	Anagrams	Anagrams.java
Strings	Pattern Syntax Checker	PatternSyntaxChecker.java
Strings	Currency Formatter	PaymentStringFormatter.java
Strings	String Reverse	StringReverse.java
Strings	Substring Comparisons	SubstringComparisons.java
Strings	Regex	Regex.java
Strings	Regex 2 - Duplicate Words	DuplicateWords.java
Strings	Valid Username Regular Expression	RegexUserName.java
Strings	Strings Introduction	StringsIntroduction.java
Strings	Tag Content Extractor	TagContentExtractor.java
BigNumber	Primality Test	PrimalityTest.java
BigNumber	BigDecimal	JavaBigDecimal.java
BigNumber	BigInteger	JavaBigInteger.java
Data Structures	List	JavaList.java
Data Structures	1D Array	OneDArray.java
Data Structures	2D Array	TwoDArray.java
Data Structures	Subarray	Subareas.java
Data Structures	Arraylist	Arraylist.java
Data Structures	Map	JavaMap.java
Data Structures	Stack	JavaStack.java
Data Structures	Hashset	JavaHashSet
Data Structures	Generics	JavaGenerics
Data Structures	[Comparator]	[https://www.hackerrank.com/challenges/java-comparator/problem]

Data Structures

Subdomain	Challenge	Solution
Linked Lists	Cycle Detection	CycleDetection.java