66 lines
1.8 KiB
Markdown
66 lines
1.8 KiB
Markdown
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---
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id: 5900f38f1000cf542c50fea2
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challengeType: 5
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title: 'Problem 35: Circular primes'
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videoUrl: ''
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localeTitle: 问题35：循环素数
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---
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## Description
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<section id="description">这个数字197被称为循环素数，因为数字的所有旋转：197,971和719本身都是素数。在100：2,3,5,7,11,13,17,31,37,71,73,79和97之下有十三个这样的素数。在n下面有多少个圆形素数，而100 <= n < = 1000000？ </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>circularPrimes(100)</code>应该返回13。
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testString: 'assert(circularPrimes(100) == 13, "<code>circularPrimes(100)</code> should return 13.");'
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- text: <code>circularPrimes(100000)</code>应该返回43。
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testString: 'assert(circularPrimes(100000) == 43, "<code>circularPrimes(100000)</code> should return 43.");'
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- text: <code>circularPrimes(250000)</code>应该返回45。
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testString: 'assert(circularPrimes(250000) == 45, "<code>circularPrimes(250000)</code> should return 45.");'
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- text: <code>circularPrimes(500000)</code>应该返回49。
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testString: 'assert(circularPrimes(500000) == 49, "<code>circularPrimes(500000)</code> should return 49.");'
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- text: <code>circularPrimes(750000)</code>应该返回49。
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testString: 'assert(circularPrimes(750000) == 49, "<code>circularPrimes(750000)</code> should return 49.");'
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- text: <code>circularPrimes(1000000)</code>应该返回55。
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testString: 'assert(circularPrimes(1000000) == 55, "<code>circularPrimes(1000000)</code> should return 55.");'
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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 circularPrimes(n) {
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// Good luck!
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return n;
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}
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circularPrimes(1000000);
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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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