ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
179 lines
3.0 KiB
Markdown
179 lines
3.0 KiB
Markdown
---
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id: 594dc6c729e5700999302b45
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title: 平衡括号
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challengeType: 5
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videoUrl: ''
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dashedName: balanced-brackets
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---
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# --description--
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<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>
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# --hints--
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`isBalanced`是一个函数。
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```js
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assert(typeof isBalanced === 'function');
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```
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`isBalanced("[]")`应该返回true。
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```js
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assert(isBalanced(testCases[0]));
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```
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`isBalanced("]][[[][][][]][")`应该返回false。
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```js
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assert(!isBalanced(testCases[1]));
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```
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`isBalanced("[][[[[][][[[]]]]]]")`应该返回true。
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```js
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assert(isBalanced(testCases[2]));
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```
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`isBalanced("][")`应该返回true。
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```js
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assert(!isBalanced(testCases[3]));
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```
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`isBalanced("[[[]]]][[]")`应该返回true。
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```js
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assert(!isBalanced(testCases[4]));
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```
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`isBalanced("][[]")`应该返回true。
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```js
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assert(!isBalanced(testCases[5]));
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```
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`isBalanced("][[][]][[[]]")`应该返回true。
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```js
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assert(!isBalanced(testCases[6]));
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```
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`isBalanced("[[][]]][")`应该返回true。
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```js
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assert(!isBalanced(testCases[7]));
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```
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`isBalanced("[[[]]][[]]]][][[")`应该返回true。
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```js
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assert(!isBalanced(testCases[8]));
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```
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`isBalanced("[]][[]]][[[[][]]")`应该返回true。
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```js
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assert(!isBalanced(testCases[9]));
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```
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`isBalanced("][]][[][")`应该返回true。
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```js
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assert(!isBalanced(testCases[10]));
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```
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`isBalanced("[[]][[][]]")`应该返回true。
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```js
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assert(isBalanced(testCases[11]));
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```
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`isBalanced("[[]]")`应该返回true。
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```js
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assert(isBalanced(testCases[12]));
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```
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`isBalanced("]][]][[]][[[")`应该返回true。
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```js
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assert(!isBalanced(testCases[13]));
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```
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`isBalanced("][]][][[")`应该返回true。
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```js
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assert(!isBalanced(testCases[14]));
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```
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`isBalanced("][][")`应该返回true。
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```js
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assert(!isBalanced(testCases[15]));
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```
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`isBalanced("[[]]][][][[]][")`应该返回true。
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```js
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assert(!isBalanced(testCases[16]));
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```
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`isBalanced("")`应该返回true。
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```js
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assert(isBalanced(testCases[17]));
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```
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# --seed--
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## --after-user-code--
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```js
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const testCases = [
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'[]',
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']][[[][][][]][',
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'[][[[[][][[[]]]]]]',
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'][',
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'[[[]]]][[]',
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'][[]',
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'][[][]][[[]]',
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'[[][]]][',
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'[[[]]][[]]]][][[',
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'[]][[]]][[[[][]]',
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'][]][[][',
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'[[]][[][]]',
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'[[]]',
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']][]][[]][[[',
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'][]][][[',
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'][][',
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'[]]]',
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''
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];
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```
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## --seed-contents--
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```js
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function isBalanced(str) {
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return true;
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}
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```
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# --solutions--
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```js
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function isBalanced(str) {
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if (str === '') return true;
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let a = str;
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let b;
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do {
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b = a;
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a = a.replace(/\[\]/g, '');
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} while (a !== b);
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return !a;
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}
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```
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