npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

sorted-array-operations

v1.0.0

Published

Broad coverage of sorted array operations

Downloads

7

Readme

Overview

Existing libraries cover non-standard operations or cover the operations partially on sorted arrays. This library is created to provide a wide range of operations on sorted arrays found in the standard libraries of major programming languages so that developers can get almost all (if not all) standard operations on sorted arrays in a library.

This library features:

  • Language: Supports both JavaScript and TypeScript
  • Module: Includes both CommonJS module and ES module

Installation

Yarn & npm

$ yarn add sorted-array-operations
$ npm install sorted-array-operations

CDN

<script src="https://unpkg.com/[email protected]/dist/utils.esm.js"></script>

Usage of all library functions

const ops = require('sorted-array-operations');

console.log(ops.union([2, 3, 5, 6], [2, 6, 8])); // [ 2, 3, 5, 6, 8 ]
console.log(ops.intersection([2, 3, 5, 6], [2, 6, 8])); // [ 2 ]
console.log(ops.difference([2, 3, 5, 6], [2, 6, 8])); // [ 3, 5 ]
console.log(ops.symmetric_difference([2, 3, 5, 6], [2, 6, 8])); // [ 3, 5, 8 ]
console.log(ops.merge([2, 3, 5, 6], [2, 6, 8])); // [ 2, 2, 3, 5, 6, 6, 8 ]

const arr1 = [2, 5, 3];
console.log(ops.inplace_merge(arr1, 2)); // arr1 becomes [ 2, 3, 5 ]

console.log(ops.includes([2, 3, 5, 6], [2, 6, 8])); // false

const arr2 = [2, 3, 5, 6];
console.log(ops.insert(arr2, 2)); // arr2 becomes [ 2, 2, 3, 5, 6 ]

const arr3 = [2, 3, 5, 6];
console.log(ops.remove(arr3, 2)); // Return true. arr3 becomes [ 3, 5, 6 ]
console.log(ops.binary_search([2, 3, 5, 6], 2)); // Return 0
console.log(ops.binary_search_ge([2, 3, 5, 6], 2)); // Return 0
console.log(ops.binary_search_gt([2, 3, 5, 6], 2)); // Return 1
console.log(ops.equal_range([2, 3, 5, 6], 2)); // Return [ 0, 1 ]

function weight_cmp(p1, p2) {
  return p1.weight > p2.weight ? 1 : p1.weight < p2.weight ? -1 : 0;
}

console.log(ops.union([{weight: 2}, {weight: 3}], [{weight: 3}], weight_cmp)); // [ {weight: 2}, {weight: 3} ]
console.log(ops.intersection([{weight: 2}, {weight: 3}], [{weight: 3}], weight_cmp)); // [ {weight: 3} ]
console.log(ops.difference([{weight: 2}, {weight: 3}], [{weight: 3}], weight_cmp)); // [ {weight: 2} ]
console.log(ops.symmetric_difference([{weight: 2}, {weight: 3}], [{weight: 3},{weight: 4}], weight_cmp)); // [ {weight: 2}, {weight: 4} ]
console.log(ops.merge([{weight: 2}, {weight: 3}], [{weight: 3}], weight_cmp)); // [ {weight: 2}, {weight: 3}, {weight: 3} ]

const arr4 = [{weight: 3}, {weight: 1}];
console.log(ops.inplace_merge(arr4, 1, weight_cmp)); // arr4 becomes [ {weight: 1}, {weight: 3} ]

console.log(ops.includes([{weight: 2}, {weight: 3}], [{weight: 3}], weight_cmp)); // true

const arr5 = [{weight: 3}];
console.log(ops.insert(arr5, {weight: 2}, weight_cmp)); // arr5 becomes [ {weight: 2}, {weight: 3} ]

const arr6 = [{weight: 3}];
console.log(ops.remove(arr6, {weight: 3}, weight_cmp)); // Return true. arr6 becomes [ ]
console.log(ops.binary_search([{weight: 2}, {weight: 3}], {weight: 2}, weight_cmp)); // Return 0
console.log(ops.binary_search_ge([{weight: 2}, {weight: 3}], {weight: 2}, weight_cmp)); // Return 0
console.log(ops.binary_search_gt([{weight: 2}, {weight: 3}], {weight: 2}, weight_cmp)); // Return 1
console.log(ops.equal_range([{weight: 2}, {weight: 3}], {weight: 2}, weight_cmp)); // Return [ 0, 1 ]

Related libraries

The library most similar to this library is sorted-array-functions. This library has the set operations on sorted arrays and follows the way of implementing lower_bound and upper_bound in the standard libraries in C++ and Python. These 2 differences are the major differences between this library and sorted-array-functions. Other related libraries can be found in Google.

Contributing

The sorted array operation library welcomes patches/pulls for features and bug fixes. Please open an issue and send a PR request!