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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Regex Challenge - Week Eleven</title>
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<body>
<header>
<h1>Regex Tuesday Challenge - Week Eleven</h1>
<nav>
<a href="./">« View all Challenges</a>
</nav>
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<p>Let's play golf! This challenge is to match strings where the letters are in alphabetical order - for example, <code>abcfjz</code> would pass, but <code>acb</code> would not. Whitespace should be ignored - <code>ab c d</code> should pass. You have to try to get the regular expression as short as possible!</p>
<p>To test a regular expression on the test cases below, type it into the text input. Each test case will be marked as passed or failed respectively - you are aiming to get as many test cases as you can to pass. Note that JavaScript must be enabled for this feature to work. The regex engine used is the JavaScript regex engine; it is similar to PCRE, but with a few differences.</p>
<p class='single-input'>
<textarea id="find" placeholder="/regexp? here/i"></textarea>
</p>
<h3>Test cases (<span id='passed-count'>0</span>/26) <a id='permalink' class='button' href='./challenge11.html'>Permalink</a> <label id="hide_passing"><input type="checkbox"> Hide passing tests</label></h3>
<dl id='tests'>
<dt>abc</dt><dd>match</dd>
<dt>abcdefghijk</dt><dd>match</dd>
<dt>abdfkmnpstvxz</dt><dd>match</dd>
<dt>cxy</dt><dd>match</dd>
<dt>cdklstxy</dt><dd>match</dd>
<dt>bfrtw</dt><dd>match</dd>
<dt>a b c</dt><dd>match</dd>
<dt>acg jko pr</dt><dd>match</dd>
<dt>a z</dt><dd>match</dd>
<dt>v z</dt><dd>match</dd>
<dt>a b cdefg kl</dt><dd>match</dd>
<dt>uv xyz</dt><dd>match</dd>
<dt>ab de gh</dt><dd>match</dd>
<dt>x yz</dt><dd>match</dd>
<dt>abcdefghijklmnopqrstuvwxyz</dt><dd>match</dd>
<dt>abbc</dt><dd>no match</dd>
<dt>abcb</dt><dd>no match</dd>
<dt>a bcdjkrza</dt><dd>no match</dd>
<dt>qwerty</dt><dd>no match</dd>
<dt>zyxcba</dt><dd>no match</dd>
<dt>abcdfe</dt><dd>no match</dd>
<dt>ab c dfe</dt><dd>no match</dd>
<dt>a z a</dt><dd>no match</dd>
<dt>asdfg</dt><dd>no match</dd>
<dt>asd f g</dt><dd>no match</dd>
<dt>poqwoieruytjhfg</dt><dd>no match</dd>
</dl>
<div id="congratulations">Congratulations, your regex passes all the test cases! Remember to share this challenge.</div>
</section>
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Public domain. Site by <a href="http://macr.ae/">Callum Macrae</a>
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