Oliver Eyton-Williams ee1e8abd87
feat(curriculum): restore seed + solution to Chinese (#40683)
* 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>
2021-01-12 19:31:00 -07:00

2.3 KiB

id, title, challengeType, forumTopicId, dashedName
id title challengeType forumTopicId dashedName
587d7db5367417b2b2512b95 将单个字符与多种可能性匹配 1 301357 match-single-character-with-multiple-possibilities

--description--

已经了解了文字匹配模式(/literal/)和通配符(/./)。这是正则表达式的两种极端情况,一种是精确匹配,而另一种则是匹配所有。在这两种极端情况之间有一个平衡选项。

可以使用字符集搜寻具有一定灵活性的文字匹配模式。可以把字符集放在方括号([])之间来定义一组需要匹配的字符串。

例如,如果想要匹配"bag""big""bug",但是不想匹配"bog"。可以创建正则表达式/b[aiu]g/来执行此操作。[aiu]是只匹配字符"a""i"或者"u"的字符集。

let bigStr = "big";
let bagStr = "bag";
let bugStr = "bug";
let bogStr = "bog";
let bgRegex = /b[aiu]g/;
bigStr.match(bgRegex); // Returns ["big"]
bagStr.match(bgRegex); // Returns ["bag"]
bugStr.match(bgRegex); // Returns ["bug"]
bogStr.match(bgRegex); // Returns null

--instructions--

使用元音字符集(aeiou)在正则表达式vowelRegex中匹配到字符串quoteSample中的所有元音。

注意
一定要同时匹配大小写元音。

--hints--

你应该匹配到所有25个元音。

assert(result.length == 25);

你的正则表达式vowelRegex应该使用字符集。

assert(/\[.*\]/.test(vowelRegex.source));

你的正则表达式vowelRegex应该使用全局标志。

assert(vowelRegex.flags.match(/g/).length == 1);

你的正则表达式vowelRegex应该使用忽略大小写标志。

assert(vowelRegex.flags.match(/i/).length == 1);

你的正则表达式不应该匹配任何辅音。

assert(!/[b-df-hj-np-tv-z]/gi.test(result.join()));

--seed--

--seed-contents--

let quoteSample = "Beware of bugs in the above code; I have only proved it correct, not tried it.";
let vowelRegex = /change/; // Change this line
let result = vowelRegex; // Change this line

--solutions--

let quoteSample = "Beware of bugs in the above code; I have only proved it correct, not tried it.";
let vowelRegex = /[aeiou]/gi; // Change this line
let result = quoteSample.match(vowelRegex); // Change this line