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

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---
title: Execute Brain****
id: 59e0a8df964e4540d5abe599
challengeType: 5
videoUrl: ''
localeTitle: 执行大脑****
---
## Description
<section id="description"><p>编写一个函数来实现Brain ****解释器。该函数将字符串作为参数,并应返回一个字符串作为输出。更多细节如下: </p><p> <a href="http://rosettacode.org/wiki/Brainf***" title="Brainf ***">RCBF</a>是一套为各种语言的Rosetta Code编写的<a href="http://rosettacode.org/wiki/Brainf***" title="Brainf ***">Brainf ***</a>编译器和解释器。 </p><p>以下是RCBF每个版本的链接。 </p><p>实现只需要正确实现以下指令: </p><p> {| </p><p> !命令</p><p> !描述</p><p> | - </p><p> |风格=“文本对齐:中心” | <code>&gt;</code> ||将指针向右移动</p><p> | - </p><p> |风格=“文本对齐:中心” | <code>&lt;</code> ||将指针移到左侧</p><p> | - </p><p> |风格=“文本对齐:中心” | <code>+</code> ||增加指针下的内存单元格</p><p> | - </p><p> |风格=“文本对齐:中心” | <code>-</code> ||减少指针下的内存单元格</p><p> | - </p><p> |风格=“文本对齐:中心” | <code>.</code> ||输出指针处单元格表示的字符</p><p> | - </p><p> |风格=“文本对齐:中心” | <code>,</code> ||输入一个字符并将其存储在指针的单元格中</p><p> | - </p><p> |风格=“文本对齐:中心” | <code>[</code> ||如果指针下的单元格为0则跳过匹配<code>]</code> </p><p> | - </p><p> |风格=“文本对齐:中心” | <code>]</code> ||跳回匹配<code>[</code>如果指针下的单元格非零</p><p> |} </p><p>允许任何单元格大小EOF <u>E</u> nd- <u>O</u> - <u>F</u> ile支持是可选的无论您是否有有界或无界内存。 </p></section>
## Instructions
<section id="instructions">
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: <code>brain(bye)</code>应该重新调整一个字符串
testString: 'assert(typeof brain(bye) === "string", "<code>brain(bye)</code> should return a string");'
- text: '<code>brain("++++++[>++++++++++<-]>+++++.")</code should return "A"'
testString: 'assert.equal(brain("++++++[>++++++++++<-]>+++++."),"A", "<code>brain("++++++[>++++++++++<-]>+++++.")</code should return "A"");'
- text: '<code>brain(bye)</code>应该回归<code>Goodbye, World!\\r\\n</code>'
testString: 'assert.equal(brain(bye), "Goodbye, World!\r\n", "<code>brain(bye)</code> should return <code>Goodbye, World!\\r\\n</code>");'
- text: '<code>brain(hello)</code>应该回归<code>Hello World!\\n</code> &#39;'
testString: 'assert.equal(brain(hello), "Hello World!\n", "<code>brain(hello)</code> should return <code>Hello World!\\n</code>");'
- text: '<code>brain(fib)</code>应该返回<code>1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89</code>'
testString: 'assert.equal(brain(fib), "1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89", "<code>brain(fib)</code> should return <code>1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89</code>");'
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function brain (prog) {
// Good luck!
}
```
</div>
### Before Test
<div id='js-setup'>
```js
let fib=`+
++
+++
++++
+>+>>
>>++++
+++++++
++++++++
+++++++++
++++++++++
++++++>++++
++++++++++++
+++++++++++++
+++<<<<<<[>[>>
>>>>+>+<<<<<<<-
]>>>>>>>[<<<<<<<
+>>>>>>>-]<[>++++
++++++[-<-[>>+>+<<
<-]>>>[<<<+>>>-]+<[
>[-]<[-]]>[<<[>>>+<<
<-]>>[-]]<<]>>>[>>+>+
<<<-]>>>[<<<+>>>-]+<[>
[-]<[-]]>[<<+>>[-]]<<<<
<<<]>>>>>[++++++++++++++
+++++++++++++++++++++++++
+++++++++.[-]]++++++++++<[
->-<]>+++++++++++++++++++++
+++++++++++++++++++++++++++.
[-]<<<<<<<<<<<<[>>>+>+<<<<-]>
>>>[<<<<+>>>>-]<-[>>.>.<<<[-]]
<<[>>+>+<<<-]>>>[<<<+>>>-]<<[<+
>-]>[<+>-]<<<-]`;
let hello='++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++.'
let bye='++++++++++[>+>+++>++++>+++++++>++++++++>+++++++++>++++++++++>+++++++++++>++++++++++++<<<<<<<<<-]>>>>+.>>>>+..<.<++++++++.>>>+.<<+.<<<<++++.<++.>>>+++++++.>>>.+++.<+++++++.--------.<<<<<+.<+++.---.';
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>