2018-10-10 18:03:03 -04:00
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---
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id: 5900f4341000cf542c50ff46
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challengeType: 5
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title: 'Problem 199: Iterative Circle Packing'
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videoUrl: ''
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localeTitle: 问题199：迭代圆包装
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---
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## Description
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<section id="description">三个相等半径的圆放置在较大的圆内，使得每对圆彼此相切并且内圆不重叠。有四个未覆盖的“间隙”，它们将用更多的切圆迭代地填充。 <p>在每次迭代中，在每个间隙中放置最大尺寸的圆，这为下一次迭代创建了更多的间隙。经过3次迭代（如图）后，有108个间隙，未被圆圈覆盖的区域部分为0.06790342，四舍五入到小数点后8位。 </p><p> 10次迭代后，圆圈没有覆盖哪一部分区域？使用格式x.xxxxxxxx将您的答案四舍五入到小数点后八位。 </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>euler199()</code>应该返回0.00396087。
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2020-02-18 01:40:55 +09:00
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testString: assert.strictEqual(euler199(), 0.00396087);
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2018-10-10 18:03:03 -04:00
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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 euler199() {
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// Good luck!
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return true;
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}
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euler199();
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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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2020-08-13 17:24:35 +02:00
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/section>
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