The repo consists of solutions to numerous problems using different data structures and algorithms, all coded in Java. It also contains solutions to HackerRank problems which I have solved so far and questions from Cracking the Coding Interview Book (6th Edition).
You can also refer to my Java Notes for a quick refresh on the Java concepts.
Java version 1.8.0_172
Java(TM) SE Runtime Environment (build 1.8.0_172-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.172-b11, mixed mode)
IntelliJ IDEA 2018.1.4 (Ultimate Edition)
2.5 GHz Intel Core i7
16 GB 1600 MHz DDR3