98 lines
4.7 KiB
Markdown
98 lines
4.7 KiB
Markdown
|
---
|
||
|
title: Balanced brackets
|
||
|
id: 594dc6c729e5700999302b45
|
||
|
challengeType: 5
|
||
|
videoUrl: ''
|
||
|
localeTitle: 平衡括号
|
||
|
---
|
||
|
|
||
|
## Description
|
||
|
<section id="description"><p>确定生成的括号字符串是否平衡;也就是说,它是否完全由成对的开/关括号(按此顺序)组成,其中没有一个错误嵌套。 </p>例子: <p class="rosetta__paragraph"> (空)是的</p><p class="rosetta__paragraph"> <code>[]</code>是的</p><p class="rosetta__paragraph"> <code>][</code>假</p><p class="rosetta__paragraph"> <code>[][]</code>是的</p><p class="rosetta__paragraph"> <code>][][</code>假</p><p class="rosetta__paragraph"> <code>[]][[]</code> false </p><p class="rosetta__paragraph"> <code>[[[[]]]]</code>是的</p></section>
|
||
|
|
||
|
## Instructions
|
||
|
<section id="instructions">
|
||
|
</section>
|
||
|
|
||
|
## Tests
|
||
|
<section id='tests'>
|
||
|
|
||
|
```yml
|
||
|
tests:
|
||
|
- text: <code>isBalanced</code>是一个函数。
|
||
|
testString: 'assert(typeof isBalanced === "function", "<code>isBalanced</code> is a function.");'
|
||
|
- text: '<code>isBalanced("[]")</code>应该返回true。'
|
||
|
testString: 'assert(isBalanced(testCases[0]), "<code>isBalanced("[]")</code> should return true.");'
|
||
|
- text: '<code>isBalanced("]][[[][][][]][")</code>应该返回false。'
|
||
|
testString: 'assert(!isBalanced(testCases[1]), "<code>isBalanced("]][[[][][][]][")</code> should return false.");'
|
||
|
- text: '<code>isBalanced("[][[[[][][[[]]]]]]")</code>应该返回true。'
|
||
|
testString: 'assert(isBalanced(testCases[2]), "<code>isBalanced("[][[[[][][[[]]]]]]")</code> should return true.");'
|
||
|
- text: '<code>isBalanced("][")</code>应该返回true。'
|
||
|
testString: 'assert(!isBalanced(testCases[3]), "<code>isBalanced("][")</code> should return true.");'
|
||
|
- text: '<code>isBalanced("[[[]]]][[]")</code>应该返回true。'
|
||
|
testString: 'assert(!isBalanced(testCases[4]), "<code>isBalanced("[[[]]]][[]")</code> should return true.");'
|
||
|
- text: '<code>isBalanced("][[]")</code>应该返回true。'
|
||
|
testString: 'assert(!isBalanced(testCases[5]), "<code>isBalanced("][[]")</code> should return true.");'
|
||
|
- text: '<code>isBalanced("][[][]][[[]]")</code>应该返回true。'
|
||
|
testString: 'assert(!isBalanced(testCases[6]), "<code>isBalanced("][[][]][[[]]")</code> should return true.");'
|
||
|
- text: '<code>isBalanced("[[][]]][")</code>应该返回true。'
|
||
|
testString: 'assert(!isBalanced(testCases[7]), "<code>isBalanced("[[][]]][")</code> should return true.");'
|
||
|
- text: '<code>isBalanced("[[[]]][[]]]][][[")</code>应该返回true。'
|
||
|
testString: 'assert(!isBalanced(testCases[8]), "<code>isBalanced("[[[]]][[]]]][][[")</code> should return true.");'
|
||
|
- text: '<code>isBalanced("[]][[]]][[[[][]]")</code>应该返回true。'
|
||
|
testString: 'assert(!isBalanced(testCases[9]), "<code>isBalanced("[]][[]]][[[[][]]")</code> should return true.");'
|
||
|
- text: '<code>isBalanced("][]][[][")</code>应该返回true。'
|
||
|
testString: 'assert(!isBalanced(testCases[10]), "<code>isBalanced("][]][[][")</code> should return true.");'
|
||
|
- text: '<code>isBalanced("[[]][[][]]")</code>应该返回true。'
|
||
|
testString: 'assert(isBalanced(testCases[11]), "<code>isBalanced("[[]][[][]]")</code> should return true.");'
|
||
|
- text: '<code>isBalanced("[[]]")</code>应该返回true。'
|
||
|
testString: 'assert(isBalanced(testCases[12]), "<code>isBalanced("[[]]")</code> should return true.");'
|
||
|
- text: '<code>isBalanced("]][]][[]][[[")</code>应该返回true。'
|
||
|
testString: 'assert(!isBalanced(testCases[13]), "<code>isBalanced("]][]][[]][[[")</code> should return true.");'
|
||
|
- text: '<code>isBalanced("][]][][[")</code>应该返回true。'
|
||
|
testString: 'assert(!isBalanced(testCases[14]), "<code>isBalanced("][]][][[")</code> should return true.");'
|
||
|
- text: '<code>isBalanced("][][")</code>应该返回true。'
|
||
|
testString: 'assert(!isBalanced(testCases[15]), "<code>isBalanced("][][")</code> should return true.");'
|
||
|
- text: '<code>isBalanced("[[]]][][][[]][")</code>应该返回true。'
|
||
|
testString: 'assert(!isBalanced(testCases[16]), "<code>isBalanced("[[]]][][][[]][")</code> should return true.");'
|
||
|
- text: <code>isBalanced("")</code>应该返回true。
|
||
|
testString: 'assert(isBalanced(testCases[17]), "<code>isBalanced("")</code> should return true.");'
|
||
|
|
||
|
```
|
||
|
|
||
|
</section>
|
||
|
|
||
|
## Challenge Seed
|
||
|
<section id='challengeSeed'>
|
||
|
|
||
|
<div id='js-seed'>
|
||
|
|
||
|
```js
|
||
|
function isBalanced (str) {
|
||
|
// Good luck!
|
||
|
return true;
|
||
|
}
|
||
|
|
||
|
```
|
||
|
|
||
|
</div>
|
||
|
|
||
|
|
||
|
### After Test
|
||
|
<div id='js-teardown'>
|
||
|
|
||
|
```js
|
||
|
console.info('after the test');
|
||
|
```
|
||
|
|
||
|
</div>
|
||
|
|
||
|
</section>
|
||
|
|
||
|
## Solution
|
||
|
<section id='solution'>
|
||
|
|
||
|
```js
|
||
|
// solution required
|
||
|
```
|
||
|
</section>
|