63 lines
1.4 KiB
Markdown
63 lines
1.4 KiB
Markdown
---
|
||
title: Averages-Root mean square
|
||
id: 594da033de4190850b893874
|
||
challengeType: 5
|
||
videoUrl: ''
|
||
localeTitle: 平均值 - 均方根
|
||
---
|
||
|
||
## Description
|
||
<section id="description"><p>计算数字1到10（包括1和10）的<a href="https://en.wikipedia.org/wiki/Root mean square" title="wp：均方根">均方根</a> 。 </p><p>均方根也以其首字母RMS（或rms）和二次均值来表示。 </p><p> RMS计算为数字平方的平均值，平方根： </p><p> <big>$$ x _ {\ mathrm {rms}} = \ sqrt {{{x_1} ^ 2 + {x_2} ^ 2 + \ cdots + {x_n} ^ 2} \ over n}。 $$</big> </p></section>
|
||
|
||
## Instructions
|
||
<section id="instructions">
|
||
</section>
|
||
|
||
## Tests
|
||
<section id='tests'>
|
||
|
||
```yml
|
||
tests:
|
||
- text: <code>rms</code>是一个功能。
|
||
testString: 'assert(typeof rms === "function", "<code>rms</code> is a function.");'
|
||
- text: '<code>rms([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])</code>应等于<code>6.2048368229954285</code> 。'
|
||
testString: 'assert.equal(rms(arr1), answer1, "<code>rms([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])</code> should equal <code>6.2048368229954285</code>.");'
|
||
|
||
```
|
||
|
||
</section>
|
||
|
||
## Challenge Seed
|
||
<section id='challengeSeed'>
|
||
|
||
<div id='js-seed'>
|
||
|
||
```js
|
||
function rms (arr) {
|
||
// Good luck!
|
||
}
|
||
|
||
```
|
||
|
||
</div>
|
||
|
||
|
||
### After Test
|
||
<div id='js-teardown'>
|
||
|
||
```js
|
||
console.info('after the test');
|
||
```
|
||
|
||
</div>
|
||
|
||
</section>
|
||
|
||
## Solution
|
||
<section id='solution'>
|
||
|
||
```js
|
||
// solution required
|
||
```
|
||
</section>
|