Collection of algorithms and data structures in C++, Java, Kotlin, Python and Rust

Data structures

• Segment tree c++ java kotlin
• Segment tree without recursion c++ java
• 2d tree c++ java
• Fenwick tree c++ java kotlin rust
• Fenwick tree with extended operations c++ java
• Persistent tree java kotlin rust
• Centroid decomposition c++ java
• Heavy/light decomposition c++ java
• Link/cut tree c++ java
• Link/cut tree for connectivity query java
• Link/cut tree for LCA query java
• Binary heap java
• Binary heap with change priority c++ java
• Disjoint sets c++ java rust
• Treap c++ java kotlin rust
• Treap with indexed key c++ java
• k-d tree for point query c++ java
• k-d tree for rectangular query java
• R-tree java
• Metric tree java
• Quadtree java
• Mergeable heap java rust
• Queue with minimum c++ java
• Sparse table c++ java java
• Sparse segment tree c++
• Wavelet tree c++ java
• Mo's algorithm java
• Mo's algorithm with point updates c++

Graph algorithms

• Shortest paths c++ java
• Maximum flow c++ java
• Maximum matching c++ java
• Spanning tree c++ java
• Connectivity c++ java
• Biconnectivity java
• LCA Schieber-Vishkin algorithm c++ java
• LCA java
• Planarity testing (contribute a link or implementation)
• Dynamic graph connectivity (contribute a link or implementation)
• Chu–Liu/Edmonds' algorithm (contribute a link or implementation)
• Minimum augmentation to strong connectivity (contribute a link or implementation)
• Minimum augmentation to biconnectivity (contribute a link or implementation)

String algorithms

• Knuth-Morris-Pratt algorithm c++ java
• Aho-Corasick algorithm c++ java
• Suffix array and lcp array. Radix sort algorithm in O(n*log(n)) c++ java
• Suffix array. Algorithm DC3 in O(n) c++ java
• Suffix array. Algorithm SA-IS in O(n) c++
• Suffix automaton c++ java
• Suffix tree Ukkonen's algorithm c++ java
• Suffix tree Breslauer-Italiano algorithm c++
• Trie java
• Z-function c++ java
• Hashing c++ java
• Parsing java c++
• Palindrome tree (contribute a link or implementation)
• Sorting strings in linear time (contribute a link or implementation)

Sorting algorithms

• Sorting algorithms c++ java
• N-th element java

Geometry algorithms

• Segments intersection c++ java
• Line operations java
• Circle operations java
• Convex hull c++ java
• Point in polygon query c++ java
• Closest pair of points java
• Furthest pair of points c++
• Implement quaternion (contribute a link or implementation)

Optimization

• Simplex algorithm java

Numerical algorithms

• Fast Fourier transform (FFT) c++ java
• Long arithmetics c++
• Fast subset convolution java
• Fast Walsh-Hadamar transform java
• Karatsuba multiplication java
• Newton interpolation java
• Laguerre's root-finding algorithm c++

Number theory

• Primes and divisors java c++
• Factorization java c++
• Euclidean algorithm java c++
• Primitive root c++
• Discrete logarithm c++
• Discrete root c++
• Multiplicative function java
• Rational numbers java
• Polynom class c++
• Linear recurrence and Berlekamp-Massey algorithm c++
• Modular operations c++

Combinatorics

• Permutations java
• Combinations java
• Arrangements java
• Partitions java
• Set Partitions java
• Bracket sequences java
• Binomial coefficients java
• Prufer code java

Linear algebra

• Gaussian elimination c++ java kotlin
• Determinant calculation java
• Matrix operations c++ java