56 lines
1.7 KiB
Markdown
56 lines
1.7 KiB
Markdown
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---
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id: 5900f4531000cf542c50ff65
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challengeType: 5
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title: 'Problem 230: Fibonacci Words'
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videoUrl: ''
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localeTitle: 问题230：斐波纳契语
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---
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## Description
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<section id="description">对于任何两个数字串A和B，我们将FA，B定义为序列（A，B，AB，BAB，ABBAB，...），其中每个术语是前两个术语的串联。 <p>此外，我们将DA，B（n）定义为FA的第一项中的第n个数字，B包含至少n个数字。 </p><p>例： </p><p>设A = 1415926535，B = 8979323846。我们希望找到DA，B（35）。 </p><p> FA，B的前几个术语是：1415926535 8979323846 14159265358979323846 897932384614159265358979323846 14159265358979323846897932384614159265358979323846 </p><p>然后DA，B（35）是第五项中的第35位，即9。 </p><p>现在我们使用A小数点后面的前100位数字：14159265358979323846264338327950288419716939937510 58209749445923078164062862089986280348253421170679 </p><p>对于B下一百个数字： </p><p> 82148086513282306647093844609550582231725359408128 48111745028410270193852110555964462294895493038196。 </p><p>求Σn= 0,1，...，17 10n×DA，B（（127 + 19n）×7n）。 </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>euler230()</code>应返回850481152593119200。
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testString: 'assert.strictEqual(euler230(), 850481152593119200, "<code>euler230()</code> should return 850481152593119200.");'
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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 euler230() {
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// Good luck!
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return true;
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}
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euler230();
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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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