63 lines
1.6 KiB
Markdown
63 lines
1.6 KiB
Markdown
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---
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title: Evaluate binomial coefficients
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id: 598de241872ef8353c58a7a2
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challengeType: 5
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videoUrl: ''
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localeTitle: Avaliar coeficientes binomiais
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---
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## Description
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<section id="description"><p> Escreva uma função para calcular o coeficiente binomial para o valor dado de n e k. </p><p> Esta fórmula é recomendada: </p> $ \ binom {n} {k} = \ frac {n!} {(nk)! k!} = \ frac {n (n-1) (n-2) \ ldots (n-k + 1)} { k (k-1) (k-2) \ ldots 1} $ </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>binom</code> é uma função.
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testString: 'assert(typeof binom === "function", "<code>binom</code> is a function.");'
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- text: '<code>binom(5,3)</code> deve retornar 10.'
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testString: 'assert.equal(binom(5, 3), 10, "<code>binom(5,3)</code> should return 10.");'
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- text: '<code>binom(7,2)</code> deve retornar 21.'
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testString: 'assert.equal(binom(7, 2), 21, "<code>binom(7,2)</code> should return 21.");'
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- text: '<code>binom(10,4)</code> deve retornar 210.'
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testString: 'assert.equal(binom(10, 4), 210, "<code>binom(10,4)</code> should return 210.");'
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- text: '<code>binom(6,1)</code> deve retornar 6.'
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testString: 'assert.equal(binom(6, 1), 6, "<code>binom(6,1)</code> should return 6.");'
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- text: '<code>binom(12,8)</code> deve retornar 495.'
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testString: 'assert.equal(binom(12, 8), 495, "<code>binom(12,8)</code> should return 495.");'
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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 binom (n, k) {
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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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