105 lines
2.0 KiB
Markdown
105 lines
2.0 KiB
Markdown
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---
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id: a39963a4c10bc8b4d4f06d7e
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title: 過濾數組元素
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challengeType: 5
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forumTopicId: 16046
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dashedName: seek-and-destroy
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---
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# --description--
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你將獲得一個初始數組（`destroyer` 函數中的第一個參數），後跟一個或多個參數。 從初始數組中移除所有與後續參數相等的元素。
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**注意：** 你可以使用 `arguments` 對象。
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# --hints--
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`destroyer([1, 2, 3, 1, 2, 3], 2, 3)` 應返回 `[1, 1]`。
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```js
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assert.deepEqual(destroyer([1, 2, 3, 1, 2, 3], 2, 3), [1, 1]);
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```
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`destroyer([1, 2, 3, 5, 1, 2, 3], 2, 3)` 應返回 `[1, 5, 1]`。
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```js
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assert.deepEqual(destroyer([1, 2, 3, 5, 1, 2, 3], 2, 3), [1, 5, 1]);
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```
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`destroyer([3, 5, 1, 2, 2], 2, 3, 5)` 應返回 `[1]`。
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```js
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assert.deepEqual(destroyer([3, 5, 1, 2, 2], 2, 3, 5), [1]);
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```
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`destroyer([2, 3, 2, 3], 2, 3)` 應返回 `[]`。
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```js
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assert.deepEqual(destroyer([2, 3, 2, 3], 2, 3), []);
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```
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`destroyer(["tree", "hamburger", 53], "tree", 53)` 應返回 `["hamburger"]`。
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```js
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assert.deepEqual(destroyer(['tree', 'hamburger', 53], 'tree', 53), [
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'hamburger'
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]);
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```
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`destroyer(["possum", "trollo", 12, "safari", "hotdog", 92, 65, "grandma", "bugati", "trojan", "yacht"], "yacht", "possum", "trollo", "safari", "hotdog", "grandma", "bugati", "trojan")` 應返回 `[12,92,65]`。
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```js
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assert.deepEqual(
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destroyer(
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[
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'possum',
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'trollo',
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12,
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'safari',
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'hotdog',
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92,
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65,
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'grandma',
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'bugati',
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'trojan',
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'yacht'
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],
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'yacht',
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'possum',
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'trollo',
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'safari',
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'hotdog',
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'grandma',
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'bugati',
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'trojan'
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),
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[12, 92, 65]
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);
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```
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# --seed--
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## --seed-contents--
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```js
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function destroyer(arr) {
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return arr;
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}
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destroyer([1, 2, 3, 1, 2, 3], 2, 3);
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```
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# --solutions--
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```js
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function destroyer(arr) {
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var hash = Object.create(null);
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[].slice.call(arguments, 1).forEach(function(e) {
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hash[e] = true;
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});
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return arr.filter(function(e) { return !(e in hash);});
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}
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destroyer([1, 2, 3, 1, 2, 3], 2, 3);
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```
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