4.7 KiB
4.7 KiB
title | id | challengeType | videoUrl | localeTitle |
---|---|---|---|---|
Balanced brackets | 594dc6c729e5700999302b45 | 5 | 平衡括号 |
Description
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。
例子:(空)是的
[]
是的
][
假
[][]
是的
][][
假
[]][[]
false
[[[[]]]]
是的
Instructions
Tests
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.");'
Challenge Seed
function isBalanced (str) {
// Good luck!
return true;
}
After Test
console.info('after the test');
Solution
// solution required