MasteringCS - Learn Programming Through Practice

Build your coding skills with scaffolded exercises designed to be more accessible than LeetCode. Perfect for students learning Java fundamentals, data structures, and problem-solving techniques.

Java Programming Scaffolded Learning Data Structures Problem Solving

Progressive Difficulty

Start with fundamentals and gradually advance to complex algorithms with carefully designed problem sequences.

Scaffolded Approach

Each problem builds on previous concepts with hints and guidance to help you learn effectively.

Hands-On Practice

Write real code to solve problems covering primitives, objects, loops, arrays, and data structures.

Track Your Growth

Monitor your progress across all topics and see your improvement over time.

Learn

Primitives

Basic building blocks like int, boolean, and char.

Objects

Learn about objects, classes, and references.

Conditionals

If/else statements and switch cases to control program flow.

Iteration

Loops such as for and while structures.

Classes

Classes: properties, constructors, and methods.

Arrays

Arrays: creating, accessing, and iterating.

ArrayList

ArrayLists: dynamic storage, access, and manipulation.

2D Arrays

2D Arrays: tables, indexing, and traversal.

Recursion

Learn how to solve problems by having functions call themselves, covering base cases, recursive calls, and common patterns like factorials, Fibonacci sequences, and tree traversals.

Inheritance

Learn how classes can inherit properties and behaviors from other classes, enabling code reuse and a hierarchical structure.

DS Projects

Longer Problems for Data Structures