ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
91 lines
1.7 KiB
Markdown
91 lines
1.7 KiB
Markdown
---
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id: 59d9c6bc214c613ba73ff012
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title: SEDOLs
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challengeType: 5
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videoUrl: ''
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dashedName: sedols
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---
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# --description--
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任务：
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对于6位[SEDOL](https://en.wikipedia.org/wiki/SEDOL "wp：SEDOL")的每个数字列表，计算并附加校验和数字。
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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：
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```
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<pre> 710889 => 7108899 B0YBKJ => B0YBKJ7 406566 => 4065663 B0YBLH => B0YBLH2 228276 => 2282765 B0YBKL => B0YBKL9 557910 => 5579107 B0YBKR => B0YBKR5 585284 => 5852842 B0YBKT => B0YBKT7 B00030 => B000300 </pre>
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```
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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`null` 。
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# --hints--
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`sedol`是一个功能。
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```js
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assert(typeof sedol === 'function');
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```
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`sedol('a')`应该返回null。
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```js
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assert(sedol('a') === null);
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```
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`sedol('710889')`应返回'7108899'。
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```js
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assert(sedol('710889') === '7108899');
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```
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`sedol('BOATER')`应该返回null。
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```js
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assert(sedol('BOATER') === null);
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```
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`sedol('228276')`应该返回'228276'。
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```js
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assert(sedol('228276') === '2282765');
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```
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# --seed--
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## --seed-contents--
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```js
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function sedol(input) {
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return true;
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}
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```
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# --solutions--
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```js
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function sedol(input) {
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const checkDigit = sedolCheckDigit(input);
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if (checkDigit !== null) {
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return input + checkDigit;
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}
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return null;
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}
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const weight = [1, 3, 1, 7, 3, 9, 1];
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function sedolCheckDigit(char6) {
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if (char6.search(/^[0-9BCDFGHJKLMNPQRSTVWXYZ]{6}$/) === -1) {
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return null;
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}
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let sum = 0;
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for (let i = 0; i < char6.length; i++) {
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sum += weight[i] * parseInt(char6.charAt(i), 36);
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}
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const check = (10 - (sum % 10)) % 10;
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return check.toString();
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}
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```
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