79d9012432
* fix(curriculum): tests quotes * fix(curriculum): fill seed-teardown * fix(curriculum): fix tests and remove unneeded seed-teardown
68 lines
2.6 KiB
Markdown
68 lines
2.6 KiB
Markdown
---
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id: 587d7db9367417b2b2512ba6
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title: Specify Only the Lower Number of Matches
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challengeType: 1
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---
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## Description
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<section id='description'>
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You can specify the lower and upper number of patterns with <code>quantity specifiers</code> using curly brackets. Sometimes you only want to specify the lower number of patterns with no upper limit.
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To only specify the lower number of patterns, keep the first number followed by a comma.
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For example, to match only the string <code>"hah"</code> with the letter <code>a</code> appearing at least <code>3</code> times, your regex would be <code>/ha{3,}h/</code>.
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<blockquote>let A4 = "haaaah";<br>let A2 = "haah";<br>let A100 = "h" + "a".repeat(100) + "h";<br>let multipleA = /ha{3,}h/;<br>multipleA.test(A4); // Returns true<br>multipleA.test(A2); // Returns false<br>multipleA.test(A100); // Returns true</blockquote>
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</section>
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## Instructions
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<section id='instructions'>
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Change the regex <code>haRegex</code> to match the word <code>"Hazzah"</code> only when it has four or more letter <code>z</code>'s.
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: Your regex should use curly brackets.
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testString: assert(haRegex.source.match(/{.*?}/).length > 0, 'Your regex should use curly brackets.');
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- text: Your regex should not match <code>"Hazzah"</code>
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testString: assert(!haRegex.test("Hazzah"), 'Your regex should not match <code>"Hazzah"</code>');
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- text: Your regex should not match <code>"Hazzzah"</code>
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testString: assert(!haRegex.test("Hazzzah"), 'Your regex should not match <code>"Hazzzah"</code>');
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- text: Your regex should match <code>"Hazzzzah"</code>
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testString: assert(haRegex.test("Hazzzzah"), 'Your regex should match <code>"Hazzzzah"</code>');
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- text: Your regex should match <code>"Hazzzzzah"</code>
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testString: assert(haRegex.test("Hazzzzzah"), 'Your regex should match <code>"Hazzzzzah"</code>');
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- text: Your regex should match <code>"Hazzzzzzah"</code>
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testString: assert(haRegex.test("Hazzzzzzah"), 'Your regex should match <code>"Hazzzzzzah"</code>');
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- text: Your regex should match <code>"Hazzah"</code> with 30 <code>z</code>\'s in it.
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testString: assert(haRegex.test("Ha" + "z".repeat(30) + "ah"), 'Your regex should match <code>"Hazzah"</code> with 30 <code>z</code>\'s in it.');
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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let haStr = "Hazzzzah";
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let haRegex = /change/; // Change this line
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let result = haRegex.test(haStr);
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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