Some solutions to HackerRank problems & challenges

Solutions are written in Java 8 (Sadly, no Kotlin support on HackerRank yet)

Click on the green check mark for code of the challenge you are interested in. To read the task click on the link in the "Solution" column (Redirects to HackerRank)

•  30 Days of Code

• Warm Up
• Implementation
• Strings

• Arrays
• Queues

Be careful! HackerRank needs the main class to be named "Solution". In my examples the class names are changed for the sake of navigation and readability. Also classes "Inheritance", "Abstract Classes" and "Scope" are not compilable, since those are a part of hidden logic which you had to extend during this task.