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

1.7 KiB
Raw Blame History

id, title, challengeType, forumTopicId, dashedName
id title challengeType forumTopicId dashedName
587d7db5367417b2b2512b96 匹配字母表中的字母 1 301354 match-letters-of-the-alphabet

--description--

了解了如何使用字符集来指定要匹配的一组字符串,但是当需要匹配大量字符(例如,字母表中的每个字母)时,有一种写法可以让实现这个功能变得简短。

字符集中,可以使用连字符-)来定义要匹配的字符范围。

例如,要匹配小写字母ae,你可以使用[a-e]

let catStr = "cat";
let batStr = "bat";
let matStr = "mat";
let bgRegex = /[a-e]at/;
catStr.match(bgRegex); // Returns ["cat"]
batStr.match(bgRegex); // Returns ["bat"]
matStr.match(bgRegex); // Returns null

--instructions--

匹配字符串quoteSample中的所有字母。

注意:
一定要同时匹配大小写字母。****

--hints--

你的正则表达式alphabetRegex应该匹配 35 项。

assert(result.length == 35);

你的正则表达式alphabetRegex应该使用全局标志。

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

你的正则表达式alphabetRegex应该使用忽略大小写标志。

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

--seed--

--seed-contents--

let quoteSample = "The quick brown fox jumps over the lazy dog.";
let alphabetRegex = /change/; // Change this line
let result = alphabetRegex; // Change this line

--solutions--

let quoteSample = "The quick brown fox jumps over the lazy dog.";
let alphabetRegex = /[a-z]/gi; // Change this line
let result = quoteSample.match(alphabetRegex); // Change this line