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105 lines
2.2 KiB
Markdown
105 lines
2.2 KiB
Markdown
---
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id: a39963a4c10bc8b4d4f06d7e
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title: Seek and Destroy
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challengeType: 1
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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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You will be provided with an initial array as the first argument to the `destroyer` function, followed by one or more arguments. Remove all elements from the initial array that are of the same value as these arguments.
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The function must accept an indeterminate number of arguments, also known as a variadic function. You can access the additional arguments by adding a rest parameter to the function definition or using the `arguments` object.
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# --hints--
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`destroyer([1, 2, 3, 1, 2, 3], 2, 3)` should return `[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)` should return `[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)` should return `[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)` should return `[]`.
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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)` should return `["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")` should return `[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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