⏱️
BeginnerFoundations
Learn DSA through interactive games. Build intuition, not just memorization. Join 100,000+ developers leveling up their skills.
Quick-fire problems to maintain your coding hygiene.
Progress from basic to advanced topics
DSA concepts, time/space complexity, Big O notation, and mathematical basics
Arrays, prefix sum, sliding window, two pointers, and basic searching
All major sorting algorithms and their implementations
String algorithms and pattern matching techniques
Hash maps, hash sets, and collision handling
All types of linked lists and pointer-based operations
Linear data structures with LIFO and FIFO principles
Bitwise operations, XOR properties, and bitmasking
Binary trees, BST, traversals, and tree algorithms
Trie data structure for efficient string operations
Priority-based data structures and greedy algorithms
State-space exploration and recursive problem solving
Optimal substructure and memoization techniques
Graph representation, traversal, and shortest path algorithms