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Added 13 solutions

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rshaghoulian
2017-03-18 22:17:22 -05:00
parent b1992b3e60
commit 8239026cea
30 changed files with 1945 additions and 1312 deletions
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Java/Data Structures/Java 1D Array (Part 2)/Solution.java
-2
View File
@@ -3,10 +3,8 @@
// HackerRank: hackerrank.com/rshaghoulian
import java.util.Scanner;
import java.util.HashMap;
public class Solution {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
int T = scan.nextInt();
Java/Data Structures/Java Dequeue/Solution.java
+5 -8
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@@ -7,8 +7,8 @@ import java.util.Deque;
import java.util.ArrayDeque;
import java.util.HashMap;
// O(n) runtime
// O(n) space complexity
// Time Complexity: O(n)
// Space Complexity: O(n)
public class test {
public static void main(String[] args) {
HashMap<Integer, Integer> map = new HashMap<>();
@@ -26,17 +26,14 @@ public class test {
if (map.get(old) == 1) {
map.remove(old);
} else {
map.put(old, map.get(old) - 1);
map.merge(old, -1, Integer::sum);
}
}
/* Add new value */
int num = scan.nextInt();
deque.add(num);
if (map.containsKey(num)) {
map.put(num, map.get(num) + 1);
} else {
map.put(num, 1);
}
map.merge(num, 1, Integer::sum);
max = Math.max(max, map.size());
}
Java/README.md
+67 -67
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@@ -1,69 +1,69 @@
## Java
| Domain | Subdomain | Challenge | Difficulty | Solution |
|:------:|:---------------------------:|:------------------------------------------------------------------------------------------------------------------------:|:----------:|:---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------:|
| Java | Introduction | [Welcome to Java!](https://www.hackerrank.com/challenges/welcome-to-java) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Welcome%20to%20Java!/Solution.java) |
| Java | Introduction | [Java Stdin and Stdout I](https://www.hackerrank.com/challenges/java-stdin-and-stdout-1) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Stdin%20and%20Stdout%20I/Solution.java) |
| Java | Introduction | [Java If-Else](https://www.hackerrank.com/challenges/java-if-else) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20If-Else/Solution.java) |
| Java | Introduction | [Java Stdin and Stdout II](https://www.hackerrank.com/challenges/java-stdin-stdout) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Stdin%20and%20Stdout%20II/Solution.java) |
| Java | Introduction | [Java Output Formatting](https://www.hackerrank.com/challenges/java-output-formatting) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Output%20Formatting/Solution.java) |
| Java | Introduction | [Java Loops I](https://www.hackerrank.com/challenges/java-loops-i) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Loops%20I/Solution.java) |
| Java | Introduction | [Java Loops II](https://www.hackerrank.com/challenges/java-loops) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Loops%20II/Solution.java) |
| Java | Introduction | [Java Datatypes](https://www.hackerrank.com/challenges/java-datatypes) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Datatypes/Solution.java) |
| Java | Introduction | [Java End-of-file](https://www.hackerrank.com/challenges/java-end-of-file) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20End-of-file/Solution.java) |
| Java | Introduction | [Java Static Initializer Block](https://www.hackerrank.com/challenges/java-static-initializer-block) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Static%20Initializer%20Block/Solution.java) |
| Java | Introduction | [Java Int to String](https://www.hackerrank.com/challenges/java-int-to-string) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Int%20to%20String/Solution.java) |
| Java | Introduction | [Java Date and Time](https://www.hackerrank.com/challenges/java-date-and-time) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Date%20and%20Time/Solution.java) |
| Java | Introduction | [Java Currency Formatter](https://www.hackerrank.com/challenges/java-currency-formatter) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Currency%20Formatter/Solution.java) |
| Java | Strings | [Java Strings Introduction](https://www.hackerrank.com/challenges/java-strings-introduction) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Strings%20Introduction/Solution.java) |
| Java | Strings | [Java Substring](https://www.hackerrank.com/challenges/java-substring) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Substring/Solution.java) |
| Java | Strings | [Java String Compare](https://www.hackerrank.com/challenges/java-string-compare) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20String%20Compare/Solution.java) |
| Java | Strings | [Java String Reverse](https://www.hackerrank.com/challenges/java-string-reverse) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20String%20Reverse/Solution.java) |
| Java | Strings | [Java Anagrams](https://www.hackerrank.com/challenges/java-anagrams) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Anagrams/Solution.java) |
| Java | Strings | [Java String Tokens](https://www.hackerrank.com/challenges/java-string-tokens) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20String%20Tokens/Solution.java) |
| Java | Strings | [Pattern Syntax Checker](https://www.hackerrank.com/challenges/pattern-syntax-checker) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Pattern%20Syntax%20Checker/Solution.java) |
| Java | Strings | [Java Regex](https://www.hackerrank.com/challenges/java-regex) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Regex/Solution.java) |
| Java | Strings | [Java Regex 2 - Duplicate Words](https://www.hackerrank.com/challenges/duplicate-word) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Regex%202%20-%20Duplicate%20Words/Solution.java) |
| Java | Strings | [Java Regex 3 - Username Checker](https://www.hackerrank.com/challenges/valid-username-checker) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Regex%203%20-%20Username%20Checker/Solution.java) |
| Java | Strings | [Tag Content Extractor](https://www.hackerrank.com/challenges/tag-content-extractor) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Tag%20Content%20Extractor/Solution.java) |
| Java | BigNumber | [Java BigInteger](https://www.hackerrank.com/challenges/java-biginteger) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/BigNumber/Java%20BigInteger/Solution.java) |
| Java | BigNumber | [Java BigDecimal](https://www.hackerrank.com/challenges/java-bigdecimal) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/BigNumber/Java%20BigDecimal/Solution.java) |
| Java | BigNumber | [Java Primality Test](https://www.hackerrank.com/challenges/java-primality-test) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/BigNumber/Java%20Primality%20Test/Solution.java) |
| Java | Data Structures | [Java 1D Array](https://www.hackerrank.com/challenges/java-1d-array-introduction) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%201D%20Array/Solution.java) |
| Java | Data Structures | [Java 2D Array](https://www.hackerrank.com/challenges/java-2d-array) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%202D%20Array/Solution.java) |
| Java | Data Structures | [Java Subarray](https://www.hackerrank.com/challenges/java-negative-subarray) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Subarray/Solution.java) |
| Java | Data Structures | [Java Arraylist](https://www.hackerrank.com/challenges/java-arraylist) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20ArrayList/Solution.java) |
| Java | Data Structures | [Java 1D Array (Part 2)](https://www.hackerrank.com/challenges/java-1d-array) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%201D%20Array%20(Part%202)/Solution.java) |
| Java | Data Structures | [Java List](https://www.hackerrank.com/challenges/java-list) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20List/Solution.java) |
| Java | Data Structures | [Java Map](https://www.hackerrank.com/challenges/phone-book) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Map/Solution.java) |
| Java | Data Structures | [Java Stack](https://www.hackerrank.com/challenges/java-stack) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Stack/Solution.java) |
| Java | Data Structures | [Java Hashset](https://www.hackerrank.com/challenges/java-hashset) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Hashset/Solution.java) |
| Java | Data Structures | [Java Generics](https://www.hackerrank.com/challenges/java-generics) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Generics/Solution.java) |
| Java | Data Structures | [Java Comparator](https://www.hackerrank.com/challenges/java-comparator) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Comparator/Solution.java) |
| Java | Data Structures | [Java Sort](https://www.hackerrank.com/challenges/java-sort) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Sort/Solution.java) |
| Java | Data Structures | [Java Dequeue](https://www.hackerrank.com/challenges/java-dequeue) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Dequeue/Solution.java) |
| Java | Data Structures | [Java BitSet](https://www.hackerrank.com/challenges/java-bitset) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20BitSet/Solution.java) |
| Java | Data Structures | [Java Priority Queue](https://www.hackerrank.com/challenges/java-priority-queue) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Priority%20Queue/Solution.java) |
| Java | Object Oriented Programming | [Java Inheritance I](https://www.hackerrank.com/challenges/java-inheritance-1) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Java%20Inheritance%20I/Solution.java) |
| Java | Object Oriented Programming | [Java Inheritance II](https://www.hackerrank.com/challenges/java-inheritance-2) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Java%20Inheritance%20II/Solution.java) |
| Java | Object Oriented Programming | [Java Abstract Class](https://www.hackerrank.com/challenges/java-abstract-class) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Java%20Abstract%20Class/Solution.java) |
| Java | Object Oriented Programming | [Java Interface](https://www.hackerrank.com/challenges/java-interface) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Java%20Interface/Solution.java) |
| Java | Object Oriented Programming | [Java Method Overriding](https://www.hackerrank.com/challenges/java-method-overriding) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Java%20Method%20Overriding/Solution.java) |
| Java | Object Oriented Programming | [Java Method Overriding 2 (Super Keyword)](https://www.hackerrank.com/challenges/java-method-overriding-2-super-keyword) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Java%20Method%20Overriding%202%20(Super%20Keyword)/Solution.java) |
| Java | Object Oriented Programming | [Java Instanceof keyword](https://www.hackerrank.com/challenges/java-instanceof-keyword) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Java%20Instanceof%20keyword/Solution.java) |
| Java | Object Oriented Programming | [Java Iterator](https://www.hackerrank.com/challenges/java-iterator) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Java%20Iterator/Solution.java) |
| Java | Object Oriented Programming | [Calculating Volume](https://www.hackerrank.com/challenges/calculating-volume) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Calculating%20Volume/Solution.java) |
| Java | Exception Handling | [Java Exception Handling (Try-catch)](https://www.hackerrank.com/challenges/java-exception-handling-try-catch) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Exception%20Handling/Java%20Exception%20Handling%20(Try-catch)/Solution.java) |
| Java | Exception Handling | [Java Exception Handling](https://www.hackerrank.com/challenges/java-exception-handling) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Exception%20Handling/Java%20Exception%20Handling/Solution.java) |
| Java | Advanced | [Java Varargs - Simple Addition](https://www.hackerrank.com/challenges/simple-addition-varargs) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20Varargs%20-%20Simple%20Addition/Solution.java) |
| Java | Advanced | [Java Reflection - Attributes](https://www.hackerrank.com/challenges/java-reflection-attributes) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20Reflection%20-%20Attributes/Solution.java) |
| Java | Advanced | [Can You Access](https://www.hackerrank.com/challenges/can-you-access) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Can%20You%20Access/Solution.java) |
| Java | Advanced | [Prime Checker](https://www.hackerrank.com/challenges/prime-checker) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Prime%20Checker/Solution.java) |
| Java | Advanced | [Java Factory Pattern](https://www.hackerrank.com/challenges/java-factory) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20Factory%20Pattern/Solution.java) |
| Java | Advanced | [Java Singleton Pattern](https://www.hackerrank.com/challenges/java-singleton) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20Singleton%20Pattern/Solution.java) |
| Java | Advanced | [Java Visitor Pattern](https://www.hackerrank.com/challenges/java-vistor-pattern) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20Visitor%20Pattern/Solution.java) |
| Java | Advanced | [Java Annotations](https://www.hackerrank.com/challenges/java-annotations) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20Annotations/Solution.java) |
| Java | Advanced | [Covariant Return Types](https://www.hackerrank.com/challenges/java-covariance) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Covariant%20Return%20Types/Solution.java) |
| Java | Advanced | [Java Lambda Expressions](https://www.hackerrank.com/challenges/java-lambda-expressions) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20Lambda%20Expressions/Solution.java) |
| Java | Advanced | [Java MD5](https://www.hackerrank.com/challenges/java-md5) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20MD5/Solution.java) |
| Java | Advanced | [Java SHA-256](https://www.hackerrank.com/challenges/sha-256) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20SHA-256/Solution.java) |
| Subdomain | Challenge | Difficulty | Solution |
|:---------------------------:|:------------------------------------------------------------------------------------------------------------------------:|:----------:|:---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------:|
| Introduction | [Welcome to Java!](https://www.hackerrank.com/challenges/welcome-to-java) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Welcome%20to%20Java!/Solution.java) |
| Introduction | [Java Stdin and Stdout I](https://www.hackerrank.com/challenges/java-stdin-and-stdout-1) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Stdin%20and%20Stdout%20I/Solution.java) |
| Introduction | [Java If-Else](https://www.hackerrank.com/challenges/java-if-else) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20If-Else/Solution.java) |
| Introduction | [Java Stdin and Stdout II](https://www.hackerrank.com/challenges/java-stdin-stdout) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Stdin%20and%20Stdout%20II/Solution.java) |
| Introduction | [Java Output Formatting](https://www.hackerrank.com/challenges/java-output-formatting) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Output%20Formatting/Solution.java) |
| Introduction | [Java Loops I](https://www.hackerrank.com/challenges/java-loops-i) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Loops%20I/Solution.java) |
| Introduction | [Java Loops II](https://www.hackerrank.com/challenges/java-loops) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Loops%20II/Solution.java) |
| Introduction | [Java Datatypes](https://www.hackerrank.com/challenges/java-datatypes) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Datatypes/Solution.java) |
| Introduction | [Java End-of-file](https://www.hackerrank.com/challenges/java-end-of-file) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20End-of-file/Solution.java) |
| Introduction | [Java Static Initializer Block](https://www.hackerrank.com/challenges/java-static-initializer-block) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Static%20Initializer%20Block/Solution.java) |
| Introduction | [Java Int to String](https://www.hackerrank.com/challenges/java-int-to-string) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Int%20to%20String/Solution.java) |
| Introduction | [Java Date and Time](https://www.hackerrank.com/challenges/java-date-and-time) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Date%20and%20Time/Solution.java) |
| Introduction | [Java Currency Formatter](https://www.hackerrank.com/challenges/java-currency-formatter) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Introduction/Java%20Currency%20Formatter/Solution.java) |
| Strings | [Java Strings Introduction](https://www.hackerrank.com/challenges/java-strings-introduction) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Strings%20Introduction/Solution.java) |
| Strings | [Java Substring](https://www.hackerrank.com/challenges/java-substring) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Substring/Solution.java) |
| Strings | [Java String Compare](https://www.hackerrank.com/challenges/java-string-compare) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20String%20Compare/Solution.java) |
| Strings | [Java String Reverse](https://www.hackerrank.com/challenges/java-string-reverse) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20String%20Reverse/Solution.java) |
| Strings | [Java Anagrams](https://www.hackerrank.com/challenges/java-anagrams) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Anagrams/Solution.java) |
| Strings | [Java String Tokens](https://www.hackerrank.com/challenges/java-string-tokens) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20String%20Tokens/Solution.java) |
| Strings | [Pattern Syntax Checker](https://www.hackerrank.com/challenges/pattern-syntax-checker) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Pattern%20Syntax%20Checker/Solution.java) |
| Strings | [Java Regex](https://www.hackerrank.com/challenges/java-regex) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Regex/Solution.java) |
| Strings | [Java Regex 2 - Duplicate Words](https://www.hackerrank.com/challenges/duplicate-word) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Regex%202%20-%20Duplicate%20Words/Solution.java) |
| Strings | [Java Regex 3 - Username Checker](https://www.hackerrank.com/challenges/valid-username-checker) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Java%20Regex%203%20-%20Username%20Checker/Solution.java) |
| Strings | [Tag Content Extractor](https://www.hackerrank.com/challenges/tag-content-extractor) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Strings/Tag%20Content%20Extractor/Solution.java) |
| BigNumber | [Java BigInteger](https://www.hackerrank.com/challenges/java-biginteger) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/BigNumber/Java%20BigInteger/Solution.java) |
| BigNumber | [Java BigDecimal](https://www.hackerrank.com/challenges/java-bigdecimal) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/BigNumber/Java%20BigDecimal/Solution.java) |
| BigNumber | [Java Primality Test](https://www.hackerrank.com/challenges/java-primality-test) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/BigNumber/Java%20Primality%20Test/Solution.java) |
| Data Structures | [Java 1D Array](https://www.hackerrank.com/challenges/java-1d-array-introduction) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%201D%20Array/Solution.java) |
| Data Structures | [Java 2D Array](https://www.hackerrank.com/challenges/java-2d-array) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%202D%20Array/Solution.java) |
| Data Structures | [Java Subarray](https://www.hackerrank.com/challenges/java-negative-subarray) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Subarray/Solution.java) |
| Data Structures | [Java Arraylist](https://www.hackerrank.com/challenges/java-arraylist) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20ArrayList/Solution.java) |
| Data Structures | [Java 1D Array (Part 2)](https://www.hackerrank.com/challenges/java-1d-array) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%201D%20Array%20(Part%202)/Solution.java) |
| Data Structures | [Java List](https://www.hackerrank.com/challenges/java-list) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20List/Solution.java) |
| Data Structures | [Java Map](https://www.hackerrank.com/challenges/phone-book) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Map/Solution.java) |
| Data Structures | [Java Stack](https://www.hackerrank.com/challenges/java-stack) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Stack/Solution.java) |
| Data Structures | [Java Hashset](https://www.hackerrank.com/challenges/java-hashset) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Hashset/Solution.java) |
| Data Structures | [Java Generics](https://www.hackerrank.com/challenges/java-generics) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Generics/Solution.java) |
| Data Structures | [Java Comparator](https://www.hackerrank.com/challenges/java-comparator) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Comparator/Solution.java) |
| Data Structures | [Java Sort](https://www.hackerrank.com/challenges/java-sort) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Sort/Solution.java) |
| Data Structures | [Java Dequeue](https://www.hackerrank.com/challenges/java-dequeue) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Dequeue/Solution.java) |
| Data Structures | [Java BitSet](https://www.hackerrank.com/challenges/java-bitset) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20BitSet/Solution.java) |
| Data Structures | [Java Priority Queue](https://www.hackerrank.com/challenges/java-priority-queue) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Data%20Structures/Java%20Priority%20Queue/Solution.java) |
| Object Oriented Programming | [Java Inheritance I](https://www.hackerrank.com/challenges/java-inheritance-1) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Java%20Inheritance%20I/Solution.java) |
| Object Oriented Programming | [Java Inheritance II](https://www.hackerrank.com/challenges/java-inheritance-2) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Java%20Inheritance%20II/Solution.java) |
| Object Oriented Programming | [Java Abstract Class](https://www.hackerrank.com/challenges/java-abstract-class) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Java%20Abstract%20Class/Solution.java) |
| Object Oriented Programming | [Java Interface](https://www.hackerrank.com/challenges/java-interface) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Java%20Interface/Solution.java) |
| Object Oriented Programming | [Java Method Overriding](https://www.hackerrank.com/challenges/java-method-overriding) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Java%20Method%20Overriding/Solution.java) |
| Object Oriented Programming | [Java Method Overriding 2 (Super Keyword)](https://www.hackerrank.com/challenges/java-method-overriding-2-super-keyword) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Java%20Method%20Overriding%202%20(Super%20Keyword)/Solution.java) |
| Object Oriented Programming | [Java Instanceof keyword](https://www.hackerrank.com/challenges/java-instanceof-keyword) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Java%20Instanceof%20keyword/Solution.java) |
| Object Oriented Programming | [Java Iterator](https://www.hackerrank.com/challenges/java-iterator) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Java%20Iterator/Solution.java) |
| Object Oriented Programming | [Calculating Volume](https://www.hackerrank.com/challenges/calculating-volume) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Object%20Oriented%20Programming/Calculating%20Volume/Solution.java) |
| Exception Handling | [Java Exception Handling (Try-catch)](https://www.hackerrank.com/challenges/java-exception-handling-try-catch) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Exception%20Handling/Java%20Exception%20Handling%20(Try-catch)/Solution.java) |
| Exception Handling | [Java Exception Handling](https://www.hackerrank.com/challenges/java-exception-handling) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Exception%20Handling/Java%20Exception%20Handling/Solution.java) |
| Advanced | [Java Varargs - Simple Addition](https://www.hackerrank.com/challenges/simple-addition-varargs) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20Varargs%20-%20Simple%20Addition/Solution.java) |
| Advanced | [Java Reflection - Attributes](https://www.hackerrank.com/challenges/java-reflection-attributes) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20Reflection%20-%20Attributes/Solution.java) |
| Advanced | [Can You Access](https://www.hackerrank.com/challenges/can-you-access) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Can%20You%20Access/Solution.java) |
| Advanced | [Prime Checker](https://www.hackerrank.com/challenges/prime-checker) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Prime%20Checker/Solution.java) |
| Advanced | [Java Factory Pattern](https://www.hackerrank.com/challenges/java-factory) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20Factory%20Pattern/Solution.java) |
| Advanced | [Java Singleton Pattern](https://www.hackerrank.com/challenges/java-singleton) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20Singleton%20Pattern/Solution.java) |
| Advanced | [Java Visitor Pattern](https://www.hackerrank.com/challenges/java-vistor-pattern) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20Visitor%20Pattern/Solution.java) |
| Advanced | [Java Annotations](https://www.hackerrank.com/challenges/java-annotations) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20Annotations/Solution.java) |
| Advanced | [Covariant Return Types](https://www.hackerrank.com/challenges/java-covariance) | Easy | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Covariant%20Return%20Types/Solution.java) |
| Advanced | [Java Lambda Expressions](https://www.hackerrank.com/challenges/java-lambda-expressions) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20Lambda%20Expressions/Solution.java) |
| Advanced | [Java MD5](https://www.hackerrank.com/challenges/java-md5) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20MD5/Solution.java) |
| Advanced | [Java SHA-256](https://www.hackerrank.com/challenges/sha-256) | Medium | [Solution.java](https://github.com/rshaghoulian/HackerRank-solutions/blob/master/Java/Advanced/Java%20SHA-256/Solution.java) |
Java/Strings/Java Anagrams/Solution.java
+1 -5
View File
@@ -20,11 +20,7 @@ public class Solution {
/* Fill HashMap with 1st String */
for (int i = 0; i < a.length(); i++) {
char ch = a.charAt(i);
if (map.containsKey(ch)) {
map.put(ch, map.get(ch) + 1);
} else {
map.put(ch, 1);
}
map.merge(ch, 1, Integer::sum);
}
/* Compare 2nd String to 1st String's HashMap */
Java/Strings/Java Substring/Solution.java
+4 -6
View File
@@ -5,15 +5,13 @@
import java.util.Scanner;
public class Solution {
public static void main(String[] args) {
/* Read input */
Scanner scan = new Scanner(System.in);
String s = scan.next();
int start = scan.nextInt();
int end = scan.nextInt();
String str = scan.next();
int start = scan.nextInt();
int end = scan.nextInt();
scan.close();
System.out.println(s.substring(start, end));
System.out.println(str.substring(start, end));
}
}