Data Structures and Algorithms

Data structures and algorithms become easy the moment you can see them work. A linked list or a heap is hard to picture from text alone, but watch it change one step at a time and it makes sense. This app teaches DSA that way, with lessons, visualizers and practice that prepare you for coding interviews.

Step-by-Step DSA Lessons

Each chapter explains one concept with clear examples, visuals, key points and code in C, Java, Python and JavaScript, so you learn in the language you use.

Algorithm Visualizer

Twenty animated visualizers show sorting, searching, tree traversals, BFS, DFS and more step by step, with the matching pseudocode line highlighted as it runs.

346 Coding Problems with Solutions

Practise easy, medium and hard problems on arrays, strings, stacks, trees and more, each with solutions in C, Java and Python.

1,360 Quiz Questions

Topic quizzes at easy, medium and hard level explain every answer. Flashcards, a daily challenge and a mistakes list keep revision steady.

Mock Interview Mode

Answer 30 mixed questions in 30 minutes, then get a report with your score, time and a topic-by-topic breakdown.

Code Playground

Write and run code inside the app to test an idea or a solution. Lessons and quizzes also work offline.

Data Structures Covered

Arrays, linked lists, stacks, queues and hash tables.

Trees, binary search trees, AVL trees, heaps and graphs.

Algorithms Covered

Sorting, searching, recursion, backtracking and greedy.

Divide and conquer, dynamic programming, Kruskal, Prim and Bellman-Ford.

Learn data structures and algorithms one chapter at a time, and walk into your next coding interview ready.

For any questions or feedback, write to us at learnsimpli19@gmail.com.