* 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>
59 lines
1.2 KiB
Markdown
59 lines
1.2 KiB
Markdown
---
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id: 5900f5101000cf542c510022
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title: 问题419:先说顺序
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challengeType: 5
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videoUrl: ''
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dashedName: problem-419-look-and-say-sequence
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---
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# --description--
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外观序列依次为1,11,21,1211,111221,312211,13112221,1113213211,...
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该序列以1开头,并且所有其他成员都是通过用连续数字描述前一个成员而获得的。
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大声地这样做有助于:
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1是“一个”→11
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11是“两个”→21
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21是“一二一一”→1211
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1211是\`\`一一,一二和二一''→111221
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111221是“三,二,二,一”→312211
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...
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将A(n),B(n)和C(n)分别定义为序列的第n个元素中的1、2和3的数目。 可以验证A(40)= 31254,B(40)= 20259和C(40)= 11625。
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找到n(1012)的A(n),B(n)和C(n)。 给您的答案模块230,并用逗号分隔A,B和C的值。 例如 对于n = 40,答案将是31254,20259,11625
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# --hints--
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`euler419()`应该返回998567458, 1046245404, 43363922。
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```js
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assert.strictEqual(euler419(), 998567458, 1046245404, 43363922);
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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 euler419() {
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return true;
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}
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euler419();
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```
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# --solutions--
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```js
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// solution required
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```
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