64 lines
1.8 KiB
Markdown
64 lines
1.8 KiB
Markdown
|
---
|
|||
|
|
id: 5900f36e1000cf542c50fe81
|
|||
|
|
challengeType: 5
|
|||
|
|
title: 'Problem 2: Even Fibonacci Numbers'
|
|||
|
|
videoUrl: ''
|
|||
|
|
localeTitle: 问题2：甚至斐波纳契数
|
|||
|
|
---
|
|||
|
|
|
|||
|
|
## Description
|
|||
|
|
<section id="description"> Fibonacci序列中的每个新术语都是通过添加前两个术语生成的。从1和2开始，前10个术语将是： <div style="text-align: center;"> 1,2,3,5,8,13,21,34,55,89 ...... </div>通过考虑Fibonacci序列中的值不超过第<code>n</code>项的项，找到偶数项的和。 </section>
|
|||
|
|
|
|||
|
|
## Instructions
|
|||
|
|
<section id="instructions">
|
|||
|
|
</section>
|
|||
|
|
|
|||
|
|
## Tests
|
|||
|
|
<section id='tests'>
|
|||
|
|
|
|||
|
|
```yml
|
|||
|
|
tests:
|
|||
|
|
- text: <code>fiboEvenSum(10)</code>应该返回188。
|
|||
|
|
testString: 'assert.strictEqual(fiboEvenSum(10), 188, "<code>fiboEvenSum(10)</code> should return 188.");'
|
|||
|
|
- text: <code>fiboEvenSum(23)</code>应该返回60696。
|
|||
|
|
testString: 'assert.strictEqual(fiboEvenSum(23), 60696, "<code>fiboEvenSum(23)</code> should return 60696.");'
|
|||
|
|
- text: <code>fiboEvenSum(43)</code>应该返回1485607536。
|
|||
|
|
testString: 'assert.strictEqual(fiboEvenSum(43), 1485607536, "<code>fiboEvenSum(43)</code> should return 1485607536.");'
|
|||
|
|
- text: 您的函数未使用我们的测试值返回正确的结果。
|
|||
|
|
testString: 'assert.strictEqual(fiboEvenSum(18), 3382, "Your function is not returning the correct result using our tests values.");'
|
|||
|
|
- text: 您的函数应返回<code>even</code>数值。
|
|||
|
|
testString: 'assert.equal(fiboEvenSum(31) % 2 === 0, true, "Your function should return an <code>even</code> value.");'
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
</section>
|
|||
|
|
|
|||
|
|
## Challenge Seed
|
|||
|
|
<section id='challengeSeed'>
|
|||
|
|
|
|||
|
|
<div id='js-seed'>
|
|||
|
|
|
|||
|
|
```js
|
|||
|
|
function fiboEvenSum(n) {
|
|||
|
|
// You can do it!
|
|||
|
|
return true;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
fiboEvenSum(10);
|
|||
|
|
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
</div>
|
|||
|
|
|
|||
|
|
|
|||
|
|
|
|||
|
|
</section>
|
|||
|
|
|
|||
|
|
## Solution
|
|||
|
|
<section id='solution'>
|
|||
|
|
|
|||
|
|
```js
|
|||
|
|
// solution required
|
|||
|
|
```
|
|||
|
|
</section>
|