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Data Structures & Algorithms

Learn data structures and algorithms in Python, from Big-O to graphs and dynamic programming, and run every example in your browser.

34 free lessons Intermediate to Advanced Covers Examples in Python 3.14

Start the first lesson

Getting Started

  1. 1DSA Introduction
  2. 2Big-O: Time & Space Complexity

Linear Data Structures

  1. 3Arrays & Dynamic Arrays
  2. 4String Problems
  3. 5Linked Lists
  4. 6Stacks
  5. 7Queues & Deques
  6. 8Hash Tables

Recursion

  1. 9Recursion
  2. 10Backtracking

Sorting & Searching

  1. 11Bubble, Selection & Insertion Sort
  2. 12Merge Sort
  3. 13Quick Sort
  4. 14Counting Sort & Timsort
  5. 15Binary Search & Its Variants
  6. 16Two Pointers & Sliding Window

Trees

  1. 17Trees & Binary Trees
  2. 18Tree Traversals
  3. 19Binary Search Trees
  4. 20Heaps & Priority Queues
  5. 21Tries

Graphs

  1. 22Graphs & Representations
  2. 23Breadth-First Search (BFS)
  3. 24Depth-First Search (DFS)
  4. 25Topological Sort
  5. 26Shortest Paths: Dijkstra & Bellman-Ford
  6. 27Minimum Spanning Trees & Union-Find

Advanced Algorithms

  1. 28Dynamic Programming
  2. 29Classic DP Problems
  3. 30Greedy Algorithms
  4. 31Bit Manipulation
  5. 32Fenwick & Segment Trees

Interview & Project

  1. 33Interview Problem Solving
  2. 34Project: Metro Route Finder

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