62 lines
2.1 KiB
Markdown
62 lines
2.1 KiB
Markdown
---
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title: SEDOLs
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id: 59d9c6bc214c613ba73ff012
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challengeType: 5
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videoUrl: ''
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localeTitle: SEDOLs
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---
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## Description
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<section id="description">任务： <p>对于6位<a href="https://en.wikipedia.org/wiki/SEDOL" title="wp：SEDOL">SEDOL</a>的每个数字列表，计算并附加校验和数字。 </p><p>也就是说，给定左侧的输入字符串，您的函数应返回右侧的相应字符串： </p><pre> <code><pre> 710889 => 7108899 B0YBKJ => B0YBKJ7 406566 => 4065663 B0YBLH => B0YBLH2 228276 => 2282765 B0YBKL => B0YBKL9 557910 => 5579107 B0YBKR => B0YBKR5 585284 => 5852842 B0YBKT => B0YBKT7 B00030 => B000300 </pre></code> </pre><p>还要检查每个输入是否正确形成，尤其是对于SEDOL字符串中允许的有效字符。您的函数应在无效输入时返回<code>null</code> 。 </p></section>
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## Instructions
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<section id="instructions">
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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: <code>sedol</code>是一个功能。
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testString: 'assert(typeof sedol === "function", "<code>sedol</code> is a function.");'
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- text: '<code>sedol('a')</code>应该返回null。“）'
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testString: 'assert(sedol("a") === null, "<code>sedol("a")</code> should return null.");'
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- text: '<code>sedol('710889')</code>应返回'7108899'。“）'
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testString: 'assert(sedol("710889") === "7108899", "<code>sedol("710889")</code> should return "7108899".");'
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- text: '<code>sedol('BOATER')</code>应该返回null。“）'
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testString: 'assert(sedol("BOATER") === null, "<code>sedol("BOATER")</code> should return null.");'
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- text: '<code>sedol('228276')</code>应该返回'2282765'。“）'
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testString: 'assert(sedol("228276") === "2282765", "<code>sedol("228276")</code> should return "2282765".");'
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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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function sedol (input) {
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// Good luck!
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return true;
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}
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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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