chore(learn): Applied MDX format to Chinese curriculum files (#40462)

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Randell Dawson
2020-12-16 00:37:30 -07:00
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commit 9ce4a02a41
1665 changed files with 58741 additions and 88042 deletions

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---
id: 5900f37b1000cf542c50fe8e
title: 问题15格子路径
challengeType: 5
videoUrl: ''
title: 问题15格子路径
---
## Description
<section id="description">从2×2网格的左上角开始只能向右和向下移动右下角有6条路线。 <img class="img-responsive center-block" alt="6 2乘2网格的图表显示了右下角的所有路线" src="https://cdn-media-1.freecodecamp.org/imgr/1Atixoj.gif"><p>通过给定的<code>gridSize</code>有多少这样的路由? </p></section>
# --description--
## Instructions
<section id="instructions">
</section>
从2×2网格的左上角开始只能向右和向下移动右下角有6条路线。 ![6 2乘2网格的图表显示了右下角的所有路线](https://cdn-media-1.freecodecamp.org/imgr/1Atixoj.gif)
## Tests
<section id='tests'>
通过给定的`gridSize`有多少这样的路由?
```yml
tests:
- text: <code>latticePaths(4)</code>应该返回70。
testString: assert.strictEqual(latticePaths(4), 70);
- text: <code>latticePaths(9)</code>应该返回48620。
testString: assert.strictEqual(latticePaths(9), 48620);
- text: <code>latticePaths(20)</code>应该返回137846528820。
testString: assert.strictEqual(latticePaths(20), 137846528820);
# --hints--
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
`latticePaths(4)`应该返回70。
```js
function latticePaths(gridSize) {
// Good luck!
return true;
}
latticePaths(4);
assert.strictEqual(latticePaths(4), 70);
```
</div>
</section>
## Solution
<section id='solution'>
`latticePaths(9)`应该返回48620。
```js
// solution required
assert.strictEqual(latticePaths(9), 48620);
```
/section>
`latticePaths(20)`应该返回137846528820。
```js
assert.strictEqual(latticePaths(20), 137846528820);
```
# --solutions--