DSA

10 topics · AI-enhanced lessons

Data Structures & Algorithms. The foundation of coding interviews and efficient software.

🟢 Beginner

2 topics

Two pointers, sliding window, prefix sum

Singly, doubly, fast/slow pointers

🟡 Intermediate

6 topics

Monotonic stack, BFS with queue

Binary trees, BST, DFS/BFS traversal

Min/max heap, heapify, k-th element

Adjacency list, DFS, BFS, Dijkstra

Merge sort, quick sort, heap sort

Templates, search on answer, rotated arrays

🔴 Advanced

2 topics

1D/2D DP, memoization, tabulation

N-queens, permutations, combinations

Beginner2 topics

Intermediate6 topics

Advanced2 topics