Combinatorics Packages

Doing something

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Calculate Schroeder numbers

Generate an array of random number ranges. Useful for creating test fixtures or benchmarking samples.

generates all possible subsets with size k from given array

Catalan's constant.

Calculate Catalan numbers

Generate the sequence of swaps to produce all permutations of a set

Computes a factorial.

combinatorics routines

Applied combinatorics library in Typescript

Combinatorics.js is a standalone math library for Javascript and Node.js. It features a solution to work with Permutations, Posets, Trees, and other enumerative collections.

Utility functions to help with combining items.

Catalan's constant.

Calculate Delannoy numbers

Creates function generators that can create every combination of items. also unique combinations

Calculate Narayana numbers

An implementation of the Johnson-Trotter permutation algorithm.

A library of historical permutation algorithms from 1950s-present implemented in JavaScript.

Computes the binomial coefficient.