freeCodeCamp/curriculum/challenges/russian/08-coding-interview-prep/project-euler/problem-40-champernownes-co...

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---
id: 5900f3941000cf542c50fea7
challengeType: 5
title: 'Problem 40: Champernowne"s constant'
videoUrl: ''
localeTitle: 'Задача 40: постоянная Шампернауне'
---
## Description
undefined
## Instructions
<section id="instructions">
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: <code>champernownesConstant(100)</code> должен вернуть 5.
testString: 'assert.strictEqual(champernownesConstant(100), 5, "<code>champernownesConstant(100)</code> should return 5.");'
- text: ''
testString: 'assert.strictEqual(champernownesConstant(1000), 15, "<code>champernownesConstant(1000)</code> should return 15.");'
- text: ''
testString: 'assert.strictEqual(champernownesConstant(1000000), 210, "<code>champernownesConstant(1000000)</code> should return 210.");'
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function champernownesConstant(n) {
// Good luck!
return true;
}
champernownesConstant(100);
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>