HackerRank Java Programming Solutions

• Java — Introduction

1. Welcome to Java!
2. Java Stdin and Stdout I
3. Java If Else
4. Java Stdin and Stdout II
5. Java Output Formatting
6. Java loops I
7. Java loops II
8. Java Static Initializer Block
9. Java Date and Time
10. Java Currency Formatting

• Java — Strings

1. Java String Introduction
2. Java Substring
3. Java Substring Comparison
4. Java String Reverse
5. Java Anagrams
6. Java String Tokens
7. Java Regex
8. Java Regex 2
9. Valid username Regular Expression

• Java — Big Number

1. Java BigDecimal
2. Java primarily Test
3. Java BigInteger

• Java — Data Structure

1. Java 1D Array
2. Java 2D Array
3. Java Subarray
4. Java Arraylist
5. Java 1D Array(part 2)
6. Java List
7. Java Map
8. Java Stack
9. Java Hashset
10. Java Generics
11. Java Comparator
12. Java Sort
13. Java Dequeue
14. Java BitSet
15. Java Priority Queue

• Java — Object Oriented Programming

1. Java Interface
2. Java Method Overriding
3. Java Method Overriding2
4. Java Instanceof keyword
5. Java Iterator

• Java Exception Handling

1. Java Exception Handling (Try-catch)
2. Java Exception Handling

• Java Advanced

1. Java Varargs Simple Addition
2. Java Reflection Attribute
3. Can you Access?
4. Prime Checker
5. Java Factory Pattern
6. Java Singleton Pattern
7. Java Visitor Patterns
8. Java Annotations
9. Covariant Return Types
10. Java Lambda Expression
11. Java MD5
12. Java SHA-256

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