Background

All questions are available on [leetcode.com].

Fundamentals

To find the greatest amount of success, it is highly recommended knowing the methods and runtimes of the following data structures and their operations:

• Arrays
• Maps
• Linked Lists
• Queues
• Heaps
• Stacks
• Trees
• Graph

In addition, you should have a good grasp on common algorithms such as:

• Breadth First Search
• Depth First Search
• Binary Search
• Recursion

Solutions

All the solutions here are written in Java. The equivalent Scala implementation will be added in the future.