83 lines
4.2 KiB
Markdown
83 lines
4.2 KiB
Markdown
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---
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id: aaa48de84e1ecc7c742e1124
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title: Palindrome Checker
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isRequired: true
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challengeType: 5
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videoUrl: ''
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localeTitle: 回文检查
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---
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## Description
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<section id="description">如果给定的字符串是回文，则返回<code>true</code> 。否则，返回<code>false</code> 。 <dfn>回文</dfn>是一个单词或句子，其拼写方式与前后相同，忽略标点符号，大小写和间距。 <strong>注意</strong> <br>您需要删除<strong>所有非字母数字字符</strong> （标点符号，空格和符号）并将所有内容转换为相同的大小写（小写或大写）以检查回文。我们会通过字符串具有不同的格式，如<code>"racecar"</code> ， <code>"RaceCar"</code>和<code>"race CAR"</code>等等。我们还将传递带有特殊符号的字符串，例如<code>"2A3*3a2"</code> ， <code>"2A3 3a2"</code>和<code>"2_A3*3#A2"</code> 。如果卡住，请记得使用<a href="http://forum.freecodecamp.org/t/how-to-get-help-when-you-are-stuck/19514" target="_blank">Read-Search-Ask</a> 。编写自己的代码。 </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: <code>palindrome("eye")</code>应该返回一个布尔值。
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testString: 'assert(typeof palindrome("eye") === "boolean", "<code>palindrome("eye")</code> should return a boolean.");'
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- text: <code>palindrome("eye")</code>应该返回true。
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testString: 'assert(palindrome("eye") === true, "<code>palindrome("eye")</code> should return true.");'
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- text: <code>palindrome("_eye")</code>应该返回true。
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testString: 'assert(palindrome("_eye") === true, "<code>palindrome("_eye")</code> should return true.");'
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- text: <code>palindrome("race car")</code>应该返回true。
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testString: 'assert(palindrome("race car") === true, "<code>palindrome("race car")</code> should return true.");'
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- text: <code>palindrome("not a palindrome")</code>应该返回false。
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testString: 'assert(palindrome("not a palindrome") === false, "<code>palindrome("not a palindrome")</code> should return false.");'
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- text: '<code>palindrome("A man, a plan, a canal. Panama")</code>应该回归真实。'
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testString: 'assert(palindrome("A man, a plan, a canal. Panama") === true, "<code>palindrome("A man, a plan, a canal. Panama")</code> should return true.");'
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- text: <code>palindrome("never odd or even")</code>应该返回true。
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testString: 'assert(palindrome("never odd or even") === true, "<code>palindrome("never odd or even")</code> should return true.");'
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- text: <code>palindrome("nope")</code>应该返回false。
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testString: 'assert(palindrome("nope") === false, "<code>palindrome("nope")</code> should return false.");'
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- text: <code>palindrome("almostomla")</code>应该返回false。
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testString: 'assert(palindrome("almostomla") === false, "<code>palindrome("almostomla")</code> should return false.");'
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- text: '<code>palindrome("My age is 0, 0 si ega ym.")</code>应该返回true。'
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testString: 'assert(palindrome("My age is 0, 0 si ega ym.") === true, "<code>palindrome("My age is 0, 0 si ega ym.")</code> should return true.");'
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- text: <code>palindrome("1 eye for of 1 eye.")</code>应该返回假。
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testString: 'assert(palindrome("1 eye for of 1 eye.") === false, "<code>palindrome("1 eye for of 1 eye.")</code> should return false.");'
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- text: '<code>palindrome("0_0 (: /-\ :) 0-0")</code>应该返回true。'
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testString: 'assert(palindrome("0_0 (: /-\ :) 0-0") === true, "<code>palindrome("0_0 (: /-\ :) 0-0")</code> should return true.");'
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- text: <code>palindrome("five|\_/|four")</code>应该返回false。
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testString: 'assert(palindrome("five|\_/|four") === false, "<code>palindrome("five|\_/|four")</code> should return false.");'
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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 palindrome(str) {
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// Good luck!
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return true;
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}
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palindrome("eye");
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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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