dsa4 min read
Modular Arithmetic: Fast Exponentiation and Inverse
Master modular arithmetic for competitive programming: binary exponentiation O(log n), modular inverse, and Chinese Remainder Theorem.
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dsa4 min read
GCD, LCM, and Extended Euclidean Algorithm
Master GCD/LCM with Euclidean algorithm O(log n) and the Extended Euclidean for modular inverse computation.
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dsa3 min read
Sieve of Eratosthenes: Find All Primes Efficiently
Generate all primes up to n in O(n log log n) with the Sieve of Eratosthenes. Includes segmented sieve and prime factorization variants.
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dsa2 min read
Math & Number Theory for DSA: Complete Guide
Master mathematical algorithms for DSA: primes, GCD, modular arithmetic, combinatorics, and fast exponentiation with 5-language implementations.
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Advanced Graphs — Complete Guide (MST, SCC, Bridges, Floyd-Warshall, A*)
Master advanced graph algorithms: Kruskal and Prim MST, Tarjan SCC, articulation points, bridges, Floyd-Warshall all-pairs shortest path, and A* search.
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