freeCodeCamp/curriculum/challenges/chinese/02-javascript-algorithms-an.../basic-algorithm-scripting/reverse-a-string.chinese.md

1.9 KiB

id title isRequired challengeType videoUrl localeTitle
a202eed8fc186c8434cb6d61 Reverse a String true 5 反转字符串

Description

反转提供的字符串。您可能需要先将字符串转换为数组,然后才能将其反转。您的结果必须是字符串。如果卡住,请记得使用Read-Search-Ask 。编写自己的代码。

Instructions

Tests

tests:
  - text: <code>reverseString(&quot;hello&quot;)</code>应该返回一个字符串。
    testString: 'assert(typeof reverseString("hello") === "string", "<code>reverseString("hello")</code> should return a string.");'
  - text: <code>reverseString(&quot;hello&quot;)</code>应该变成<code>&quot;olleh&quot;</code> 。
    testString: 'assert(reverseString("hello") === "olleh", "<code>reverseString("hello")</code> should become <code>"olleh"</code>.");'
  - text: <code>reverseString(&quot;Howdy&quot;)</code>应该变成<code>&quot;ydwoH&quot;</code> 。
    testString: 'assert(reverseString("Howdy") === "ydwoH", "<code>reverseString("Howdy")</code> should become <code>"ydwoH"</code>.");'
  - text: <code>reverseString(&quot;Greetings from Earth&quot;)</code>应返回<code>&quot;htraE morf sgniteerG&quot;</code> 。
    testString: 'assert(reverseString("Greetings from Earth") === "htraE morf sgniteerG", "<code>reverseString("Greetings from Earth")</code> should return <code>"htraE morf sgniteerG"</code>.");'

Challenge Seed

function reverseString(str) {
  return str;
}

reverseString("hello");

Solution

// solution required