* 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>
53 lines
1.4 KiB
Markdown
53 lines
1.4 KiB
Markdown
---
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id: 5900f4691000cf542c50ff7c
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title: 问题253:整理
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challengeType: 5
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videoUrl: ''
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dashedName: problem-253-tidying-up
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---
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# --description--
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一个小孩子有一个“数字毛毛虫”,由四十个拼图块组成,每个拼图上有一个数字,当它们连成一条线时,按顺序显示数字1到40。
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每天晚上,孩子的父亲必须拿起散落在游戏室的毛毛虫的碎片。他随机拿起碎片并按正确顺序放置。当毛虫以这种方式建立时,它形成了逐渐融合在一起的不同部分。段的数量从零开始(没有放置件),通常增加到大约十一或十二,然后在完成单个段(放置所有件)之前往往再次下降。
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例如:
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片段放置所以Far121422936434554354 ......
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设M是毛虫随机整理过程中遇到的最大段数。对于十件毛毛虫来说,每个M的可能性是多少
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M Possibilities1512 2250912 31815264 41418112 5144000
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所以M的最可能值是3,平均值是385643/113400 = 3.400732,四舍五入到小数点后六位。
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对于四十件毛毛虫而言,M最可能的价值是11;但是M的平均值是多少?将您的答案四舍五入到小数点后六位。
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# --hints--
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`euler253()`应返回11.492847。
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```js
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assert.strictEqual(euler253(), 11.492847);
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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 euler253() {
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return true;
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}
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euler253();
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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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