freeCodeCamp/problem-35-circular-primes.md at 873fce02a2d2124f3b76ce3f317fb29b34abb542

Oliver Eyton-Williams dec409a4bd fix: s/localeTitle/title/g

2020-10-06 23:10:08 +05:30

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id, challengeType, videoUrl, title

id	challengeType	videoUrl	title
5900f38f1000cf542c50fea2	5		问题35：循环素数

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？

Instructions

Tests

tests:
  - text: <code>circularPrimes(100)</code>应该返回13。
    testString: assert(circularPrimes(100) == 13);
  - text: <code>circularPrimes(100000)</code>应该返回43。
    testString: assert(circularPrimes(100000) == 43);
  - text: <code>circularPrimes(250000)</code>应该返回45。
    testString: assert(circularPrimes(250000) == 45);
  - text: <code>circularPrimes(500000)</code>应该返回49。
    testString: assert(circularPrimes(500000) == 49);
  - text: <code>circularPrimes(750000)</code>应该返回49。
    testString: assert(circularPrimes(750000) == 49);
  - text: <code>circularPrimes(1000000)</code>应该返回55。
    testString: assert(circularPrimes(1000000) == 55);

Challenge Seed

function circularPrimes(n) {
  // Good luck!
  return n;
}

circularPrimes(1000000);

Solution

// solution required

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