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<!DOCTYPE html>
<html lang="en">
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<title>JSDoc: Module: combinatorics/permutations</title>
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<h1 class="page-title">Module: combinatorics/permutations</h1>
<section>
<header>
</header>
<article>
<div class="container-overview">
<div class="description">Finds all the permutations of given array.<br><br>
Permutation relates to the act of rearranging, or permuting,
all the members of a set into some sequence or order.
For example there are six permutations of the set {1,2,3}, namely:
(1,2,3), (1,3,2), (2,1,3), (2,3,1), (3,1,2), and (3,2,1).<br><br>
Complexity: O(N*N!).</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>arr</code></td>
<td class="type">
<span class="param-type">Array</span>
</td>
<td class="description last">Array to find the permutations of.</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="combinatorics_permutations.js.html">combinatorics/permutations.js</a>, <a href="combinatorics_permutations.js.html#line24">line 24</a>
</li></ul></dd>
</dl>
<h5>Returns:</h5>
<div class="param-desc">
Array containing all the permutations.
</div>
<dl>
<dt>
Type
</dt>
<dd>
<span class="param-type">Array</span>
</dd>
</dl>
<h5>Example</h5>
<pre class="prettyprint"><code>var permutations = require('path-to-algorithms/src/' +
'combinatorics/permutations').permutations;
var result = permutations(['apple', 'orange', 'pear']);
// [ [ 'apple', 'orange', 'pear' ],
// [ 'apple', 'pear', 'orange' ],
// [ 'orange', 'apple', 'pear' ],
// [ 'orange', 'pear', 'apple' ],
// [ 'pear', 'orange', 'apple' ],
// [ 'pear', 'apple', 'orange' ] ]
console.log(result);</code></pre>
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