Java Practice Problems - simple practice problems dealing with data structures and other easy Java exercises.
Sources:
- LeetCode - https://leetcode.com/problemset/all/?difficulty=EASY&page=1
- Hackernoon - https://hackernoon.com/50-data-structure-and-algorithms-interview-questions-for-programmers-b4b1ac61f5b0
- java67 - https://www.java67.com/2018/06/data-structure-and-algorithm-interview-questions-programmers.html
- CodingBat - https://codingbat.com/java
- w3resources - https://www.w3resource.com/java-exercises/