64 lines
1.0 KiB
Markdown
64 lines
1.0 KiB
Markdown
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---
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id: a202eed8fc186c8434cb6d61
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title: 反轉字符串
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challengeType: 5
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forumTopicId: 16043
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dashedName: reverse-a-string
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---
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# --description--
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請反轉傳入函數的字符串。
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在反轉字符串之前，你可能需要將其切分成包含字符的數組。
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函數的返回結果應爲字符串。
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# --hints--
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`reverseString("hello")` 應返回一個字符串。
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```js
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assert(typeof reverseString('hello') === 'string');
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```
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`reverseString("hello")` 應返回 `olleh`。
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```js
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assert(reverseString('hello') === 'olleh');
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```
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`reverseString("Howdy")` 應返回 `ydwoH`。
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```js
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assert(reverseString('Howdy') === 'ydwoH');
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```
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`reverseString("Greetings from Earth")` 應返回 `htraE morf sgniteerG`。
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```js
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assert(reverseString('Greetings from Earth') === 'htraE morf sgniteerG');
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```
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# --seed--
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## --seed-contents--
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```js
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function reverseString(str) {
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return str;
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}
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reverseString("hello");
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```
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# --solutions--
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```js
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function reverseString(str) {
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return str.split('').reverse().join('');
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}
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reverseString("hello");
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```
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