freeCodeCamp/curriculum/challenges/chinese/08-coding-interview-prep/rosetta-code/gray-code.chinese.md

67 lines
3.2 KiB
Markdown
Raw Blame History

This file contains ambiguous Unicode characters!

This file contains ambiguous Unicode characters that may be confused with others in your current locale. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to highlight these characters.

---
title: Gray code
id: 5a23c84252665b21eecc7e80
challengeType: 5
videoUrl: ''
localeTitle: 格雷码
---
## Description
<section id="description"> <a href="https://en.wikipedia.org/wiki/Gray code">格雷码</a>是二进制编码的一种形式,其中连续数字之间的转换仅相差一位。这是一种有用的编码,用于减少硬件数据危险,其值快速变化和/或连接到较慢的硬件作为输入。从左到右或从上到下依次为<a href="https://en.wikipedia.org/wiki/Karnaugh map">卡诺图</a>生成输入也很有用。创建一个函数来编码数字并解码格雷码中的数字。该函数应该有2个参数。第一个是布尔值。该函数应编码为true解码为false。第二个参数是要编码/解码的数字。显示所有5位二进制数的正常二进制表示格雷码表示和解码格雷码值0-31包括0不需要前导0。有许多可能的格雷码。以下编码所谓的“二进制反射格雷码”。 <br>编码MSB为0位b为二进制g为格雷码 <code><br> if b[i-1] = 1 <br> <span style="padding-left:1em">g[i] = not b[i]</span> <br> else <br> <span style="padding-left:1em">g[i] = b[i]</span> <br></code>要么: <br> <code>g = b xor (b logically right shifted 1 time)</code> <br>解码MSB为0位b为二进制g为格雷码 <br> <code>b[0] = g[0] <br> for other bits: <br> b[i] = g[i] xor b[i-1] <br></code> </section>
## Instructions
<section id="instructions">
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: <code>gray</code>应该是一个功能。
testString: 'assert(typeof gray=="function","<code>gray</code> should be a function.");'
- text: '<code>gray(true,177)</code>应该返回一个数字。'
testString: 'assert(typeof gray(true,177)=="number","<code>gray(true,177)</code> should return a number.");'
- text: '<code>gray(true,177)</code>应该返回<code>233</code> 。'
testString: 'assert.equal(gray(true,177),233,"<code>gray(true,177)</code> should return <code>233</code>.");'
- text: '<code>gray(true,425)</code>应该返回<code>381</code> 。'
testString: 'assert.equal(gray(true,425),381,"<code>gray(true,425)</code> should return <code>381</code>.");'
- text: '<code>gray(true,870)</code>应该返回<code>725</code> 。'
testString: 'assert.equal(gray(true,870),725,"<code>gray(true,870)</code> should return <code>725</code>.");'
- text: '<code>gray(false,233)</code>应该返回<code>177</code> 。'
testString: 'assert.equal(gray(false,233),177,"<code>gray(false,233)</code> should return <code>177</code>.");'
- text: '<code>gray(false,381)</code>应该返回<code>425</code> 。'
testString: 'assert.equal(gray(false,381),425,"<code>gray(false,381)</code> should return <code>425</code>.");'
- text: '<code>gray(false,725)</code>应该返回<code>870</code> 。'
testString: 'assert.equal(gray(false,725),870,"<code>gray(false,725)</code> should return <code>870</code>.");'
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function gray(enc, number) {
// Good luck!
}
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>