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quickselect

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quickselect

A tiny and fast selection algorithm in JavaScript.

  • 3.0.0
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2.9M
decreased by-12.85%
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1
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What is quickselect?

The quickselect npm package is a fast selection algorithm implementation for JavaScript, based on Tony Hoare's quickselect algorithm. It allows for efficiently selecting the k-th smallest element from an unsorted list without fully sorting the array. This can be particularly useful in applications where partial sorting is sufficient, such as finding the median or other order statistics in a dataset.

What are quickselect's main functionalities?

Selecting the k-th smallest element

This feature allows you to rearrange the array so that the element at the k-th position is the one that would be in that position if the array were sorted. The elements before it are smaller, and the elements after it are larger. This is useful for finding specific order statistics, such as the median, in linear time.

const quickselect = require('quickselect');
let arr = [5, 3, 7, 6, 2, 9];
quickselect(arr, 2);
console.log(arr[2]); // Outputs: 5

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Package last updated on 03 Jul 2024

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