Learning Resources

Searching Algorithms

• Binary Search
• Ternary Search
• Linear Search Variants
• Search in Rotated Arrays

Sorting Algorithms

• Quick Sort
• Merge Sort
• Heap Sort
• Counting Sort

Graph Algorithms

• DFS & BFS
• Dijkstra's Algorithm
• Floyd-Warshall
• Minimum Spanning Tree

Dynamic Programming

• Basic DP Concepts
• Knapsack Problems
• LCS & LIS
• DP on Trees

Divide & Conquer

• Fast Exponentiation
• Matrix Multiplication
• Closest Pair Problem
• FFT & Polynomial Multiplication

Greedy Algorithms

• Activity Selection
• Huffman Coding
• Fractional Knapsack
• Job Scheduling

Linear Data Structures

• Arrays & Vectors
• Linked Lists
• Stacks & Queues
• Deque & Priority Queue

Trees

• Binary Trees
• Binary Search Trees
• AVL & Red-Black Trees
• Segment Trees

Hash Tables

• Hash Functions
• Collision Resolution
• Rolling Hash
• Bloom Filters

Advanced Structures

• Fenwick Trees
• Trie (Prefix Tree)
• Disjoint Set Union
• Suffix Arrays

Heaps

• Binary Heaps
• Fibonacci Heaps
• Leftist Heaps
• Skew Heaps

Graph Representations

• Adjacency Matrix
• Adjacency List
• Edge List
• Compressed Sparse Row

FreeCodeCamp

Comprehensive free coding bootcamp with hands-on projects and certifications.

Codecademy

Interactive coding lessons with immediate feedback and guided projects.

Coursera

University-level programming courses from top institutions and companies.

edX

High-quality courses from Harvard, MIT, and other leading universities.

HackerRank

Comprehensive platform with domains covering algorithms, data structures, and more.

SPOJ

Classical online judge with thousands of problems from various algorithmic topics.

Competitive Programming 4

by Steven Halim & Felix Halim

The ultimate guide for competitive programming with comprehensive coverage of algorithms.

Introduction to Algorithms

by Cormen, Leiserson, Rivest & Stein

Comprehensive textbook covering a broad range of algorithms in depth. Often called "CLRS".

Competitive Programmer's Handbook

by Antti Laaksonen

Free online book covering modern competitive programming techniques and algorithms.

Algorithm Design Manual

by Steven Skiena

Practical guide to algorithm design with real-world examples and problem-solving techniques.

IDEs & Editors

• Visual Studio Code Lightweight, powerful editor with excellent extension support
• CLion / IntelliJ IDEA Professional IDEs with advanced debugging tools
• Sublime Text Fast, lightweight text editor with powerful features

CP Tools

• Competitive Companion Browser extension to parse contest problems automatically
• CP Editor Specialized editor designed for competitive programming
• Stopwatch++ Time tracking tool for contest practice

Debugging & Testing

• GDB / LLDB Command-line debuggers for C/C++ programs
• Stress Testing Scripts Custom scripts to generate test cases and validate solutions
• Valgrind Memory debugging and profiling tool for C/C++

William Fiset

Comprehensive algorithms course with clear explanations and implementations

Errichto

Advanced competitive programming concepts explained by a legendary red coder

Abdul Bari

Excellent algorithms and data structures course with detailed explanations

Tushar Roy

Dynamic programming and graph algorithms explained with coding examples