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>
90 lines
2.7 KiB
Markdown
90 lines
2.7 KiB
Markdown
---
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id: 594faaab4e2a8626833e9c3d
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title: 使用转义标记字符串
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challengeType: 5
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videoUrl: ''
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dashedName: tokenize-a-string-with-escaping
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---
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# --description--
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<p>编写一个函数或程序，可以在分隔符的每个非转义事件中拆分字符串。 </p><p>它应该接受三个输入参数： </p> <b>字符串</b> <b>分隔符字符</b> <b>转义字符</b> <p>它应该输出一个字符串列表。 </p><p>拆分规则： </p>由分隔符分隔的字段将成为输出列表的元素。应保留空字段，即使在开始和结束时也是如此。 <p>转义规则： </p> “Escaped”意味着出现一个尚未自行转义的转义字符。当转义字符位于没有特殊含义的字符之前时，它仍然被视为转义符（但不会做任何特殊操作）。用于转义某些内容的每次出现的转义字符都不应成为输出的一部分。 <p>证明您的函数满足以下测试用例：给定字符串</p><pre>一个^ | UNO || 3 ^^^^ |四^^^ | ^夸| </pre>和使用<pre> | </pre>作为分隔符和<pre> ^ </pre>作为转义字符，您的函数应输出以下数组： <p></p><pre> ['one | uno'，“，'three ^^'，'four ^ | quatro'，”]
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</pre>
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# --hints--
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`tokenize`是一个函数。
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```js
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assert(typeof tokenize === 'function');
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```
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`tokenize`应该返回一个数组。
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```js
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assert(typeof tokenize('a', 'b', 'c') === 'object');
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```
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`tokenize("one^|uno||three^^^^|four^^^|^cuatro|", "|", "^")`应返回[“one | uno”，“”，“three ^^” ，“四个^ | cuatro”，“”]“）
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```js
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assert.deepEqual(tokenize(testStr1, '|', '^'), res1);
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```
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`tokenize("a@&bcd&ef&&@@hi", "&", "@")`应返回`["a&bcd", "ef", "", "@hi"]`
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```js
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assert.deepEqual(tokenize(testStr2, '&', '@'), res2);
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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 testStr1 = 'one^|uno||three^^^^|four^^^|^cuatro|';
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const res1 = ['one|uno', '', 'three^^', 'four^|cuatro', ''];
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// TODO add more tests
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const testStr2 = 'a@&bcd&ef&&@@hi';
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const res2 = ['a&bcd', 'ef', '', '@hi'];
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```
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## --seed-contents--
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```js
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function tokenize(str, sep, esc) {
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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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// tokenize :: String -> Character -> Character -> [String]
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function tokenize(str, charDelim, charEsc) {
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const dctParse = str.split('')
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.reduce((a, x) => {
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const blnEsc = a.esc;
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const blnBreak = !blnEsc && x === charDelim;
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const blnEscChar = !blnEsc && x === charEsc;
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return {
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esc: blnEscChar,
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token: blnBreak ? '' : (
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a.token + (blnEscChar ? '' : x)
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),
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list: a.list.concat(blnBreak ? a.token : [])
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};
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}, {
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esc: false,
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token: '',
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list: []
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});
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return dctParse.list.concat(
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dctParse.token
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);
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}
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```
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