63 lines
2.2 KiB
Markdown
63 lines
2.2 KiB
Markdown
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---
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title: Vector dot product
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id: 594810f028c0303b75339ad3
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challengeType: 5
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videoUrl: ''
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localeTitle: Векторный точечный продукт
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---
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## Description
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<section id="description"><p> Вектор определяется как имеющий три измерения как представленный упорядоченным набором из трех чисел: (X, Y, Z). </p><p> Задача: </p><pre> <code>Write a function that takes any numbers of vectors (arrays) as input and computes their dot product.</code> </pre><p> Ваша функция должна возвращать значение <code>null</code> на недопустимые входы (т. Е. Векторы разной длины). </p><p></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: dotProduct должен быть функцией
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testString: 'assert.equal(typeof dotProduct, "function", "dotProduct must be a function");'
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- text: dotProduct () должен возвращать значение null
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testString: 'assert.equal(dotProduct(), null, "dotProduct() must return null");'
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- text: 'dotProduct ([[1], [1]]) должен возвращать 1.'
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testString: 'assert.equal(dotProduct([1], [1]), 1, "dotProduct([[1], [1]]) must return 1.");'
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- text: 'dotProduct ([[1], [1, 2]]) должен возвращать null.'
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testString: 'assert.equal(dotProduct([1], [1, 2]), null, "dotProduct([[1], [1, 2]]) must return null.");'
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- text: 'dotProduct ([1, 3, -5], [4, -2, -1]) должен вернуть 3.'
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testString: 'assert.equal(dotProduct([1, 3, -5], [4, -2, -1]), 3, "dotProduct([1, 3, -5], [4, -2, -1]) must return 3.");'
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- text: <code>dotProduct(...nVectors)</code> должен возвращать 156000
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testString: 'assert.equal(dotProduct([ 0, 1, 2, 3, 4 ], [ 0, 2, 4, 6, 8 ], [ 0, 3, 6, 9, 12 ], [ 0, 4, 8, 12, 16 ], [ 0, 5, 10, 15, 20 ]), 156000, "<code>dotProduct(...nVectors)</code> should return 156000");'
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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 dotProduct() {
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// Good luck!
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}
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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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