79 lines
2.3 KiB
Markdown
79 lines
2.3 KiB
Markdown
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---
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title: Word wrap
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id: 594810f028c0303b75339ad4
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challengeType: 5
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videoUrl: ''
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localeTitle: 自动换行
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---
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## Description
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<section id="description"><p>即使在今天，使用比例字体和复杂布局，仍然存在需要在指定列处包装文本的情况。基本任务是以简单的方式包装一段文本。示例文字： </p><pre>使用更复杂的算法（如Knuth和Plass TeX算法）包装文本。
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如果您的语言提供此功能，您可以获得额外的信用，
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但你“必须参考文档”表明该算法
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比简单的最小长度算法更好。
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</pre><p>任务： </p><pre> <code>Write a function that can wrap this text to any number of characters.</code> </pre><p>例如，包装为80个字符的文本应如下所示： </p><p></p><pre>使用更复杂的算法（如Knuth和Plass TeX）包装文本
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算法。如果您的语言提供此功能，您可以轻松获得额外的功劳
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必须参考文档，表明该算法更好
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而不是简单的最小长度算法。
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</pre></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: ''
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testString: 'assert.equal(typeof wrap, "function", "wrap must be a function.");'
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- text: ''
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testString: 'assert.equal(typeof wrap("abc", 10), "string", "wrap must return a string.");'
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- text: wrap（80）必须返回4行。
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testString: 'assert(wrapped80.split("\n").length === 4, "wrap(80) must return 4 lines.");'
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- text: 你的<code>wrap</code>函数应该返回我们期望的文本
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testString: 'assert.equal(wrapped80.split("\n")[0], firstRow80, "Your <code>wrap</code> function should return our expected text");'
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- text: wrap（42）必须返回7行。
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testString: 'assert(wrapped42.split("\n").length === 7, "wrap(42) must return 7 lines.");'
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- text: 你的<code>wrap</code>函数应该返回我们期望的文本
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testString: 'assert.equal(wrapped42.split("\n")[0], firstRow42, "Your <code>wrap</code> function should return our expected text");'
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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 wrap (text, limit) {
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return text;
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}
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```
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</div>
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### After Test
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<div id='js-teardown'>
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```js
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console.info('after the test');
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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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