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Anarray is a collection of values, stored contiguously.
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This package includes comprehensive set of array functions with which you cangenerate an array,clone it, queryabout it, get non-negativeindices, manage itslength,get/set elements, fully or partiallysort it, obtainminimum(s)/maximum(s),compare it with anotherarray, get apart of it,search a value, obtain all possiblearrangements orrandom arrangements,find an element,take/dropelements orscan from its beginning or its end,search the index of apart of it, performfunctional operations,flatten multi-level arrays,obtainprefix sum,manipulate it in various ways,count/partitionelements,split it,concatenate/join multiple arrays,rearrangeelements within it, or performingset operations upon it.

We use a consistent naming scheme that helps you quickly identify the functionsyou need. All functions exceptfrom*() take array as 1st parameter. Somefunctions operate on a specified range in the array and are calledranged*(),such asrangedPartialSort(). Functions likeswap() are pure and do notmodify the array itself, while functions likeswap$()do modify (update) thearray itself. Some functions accept a map function forfaster comparison, suchasunique(). Further, functions which return an iterable instead of an arrayare prefixed withi, such asisubsequences(). We borrow some names fromother programming languages such asHaskell,Python,Java, andProcessing.

With this package, you can simplify the implementation of complex algorithms,and be able to achieve your goals faster, regardless of your level of expertise.Try it out today and discover how it can transform your development experience!This package is available inNode.js andWeb formats. To use it on the web,simply use theextra_array global variable after loading with a<script> tagfrom thejsDelivr CDN.

Stability:Experimental.

NOTE: The use of negative indices in certain functions such asslice() isprovided as a convenience for access elements from the end of the array.However, negative indices can be thought of as referring to a virtual mirroredversion of the original array, which can be counter-intuitive and make itharder to reason about the behavior of functions that use them. We are workingon a solution to this problem. Any suggestions are welcome.

constxarray=require('extra-array');// import * as xarray from "extra-array";// import * as xarray from "https://unpkg.com/extra-array/index.mjs"; (deno)varx=[1,2,3];xarray.get(x,-1);// → 3varx=[1,2,3,4];xarray.swap(x,0,1);// → [ 2, 1, 3, 4 ]varx=[1,2,3,4];xarray.rotate(x,1);// → [ 2, 3, 4, 1 ]xarray.permutations([1,2,3]);// → [//   [],          [ 1 ],//   [ 2 ],       [ 3 ],//   [ 1, 2 ],    [ 1, 3 ],//   [ 2, 1 ],    [ 2, 3 ],//   [ 3, 1 ],    [ 3, 2 ],//   [ 1, 2, 3 ], [ 1, 3, 2 ],//   [ 2, 1, 3 ], [ 2, 3, 1 ],//   [ 3, 1, 2 ], [ 3, 2, 1 ]// ]

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