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

2.2 KiB

Raw Blame History

id, title, challengeType, forumTopicId, dashedName

id	title	challengeType	forumTopicId	dashedName
a39963a4c10bc8b4d4f06d7e	过滤数组元素	5	16046	seek-and-destroy

--description--

在这道题目中，我们要写一个叫 destroyer 的函数。传入的第一个参数是一个数组，我们称他为初始数组。后续的参数数量是不确定的，可能有一个或多个。你需要做的是，从初始数组中移除所有与后续参数相等的元素，并返回移除元素后的数组。

注意：
你可以使用 arguments 对象，也可以使用 ...，即“剩余参数”（Rest Parameters）语法。

--hints--

destroyer([1, 2, 3, 1, 2, 3], 2, 3) 应返回 [1, 1]。

assert.deepEqual(destroyer([1, 2, 3, 1, 2, 3], 2, 3), [1, 1]);

destroyer([1, 2, 3, 5, 1, 2, 3], 2, 3) 应返回 [1, 5, 1]。

assert.deepEqual(destroyer([1, 2, 3, 5, 1, 2, 3], 2, 3), [1, 5, 1]);

destroyer([3, 5, 1, 2, 2], 2, 3, 5) 应返回 [1]。

assert.deepEqual(destroyer([3, 5, 1, 2, 2], 2, 3, 5), [1]);

destroyer([2, 3, 2, 3], 2, 3) 应返回 []。

assert.deepEqual(destroyer([2, 3, 2, 3], 2, 3), []);

destroyer(["tree", "hamburger", 53], "tree", 53) 应返回 ["hamburger"]。

assert.deepEqual(destroyer(['tree', 'hamburger', 53], 'tree', 53), [
  'hamburger'
]);

destroyer(["possum", "trollo", 12, "safari", "hotdog", 92, 65, "grandma", "bugati", "trojan", "yacht"], "yacht", "possum", "trollo", "safari", "hotdog", "grandma", "bugati", "trojan") 应返回 [12,92,65]。

assert.deepEqual(
  destroyer(
    [
      'possum',
      'trollo',
      12,
      'safari',
      'hotdog',
      92,
      65,
      'grandma',
      'bugati',
      'trojan',
      'yacht'
    ],
    'yacht',
    'possum',
    'trollo',
    'safari',
    'hotdog',
    'grandma',
    'bugati',
    'trojan'
  ),
  [12, 92, 65]
);

--seed--

--seed-contents--

function destroyer(arr) {
  return arr;
}

destroyer([1, 2, 3, 1, 2, 3], 2, 3);

--solutions--

function destroyer(arr) {
  var hash = Object.create(null);
  [].slice.call(arguments, 1).forEach(function(e) {
    hash[e] = true;
  });
  return arr.filter(function(e) { return !(e in hash);});
}

destroyer([1, 2, 3, 1, 2, 3], 2, 3);

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