freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/seek-and-destroy.md

---
id: a39963a4c10bc8b4d4f06d7e
title: Seek and Destroy
challengeType: 5
forumTopicId: 16046
---

# --description--

You will be provided with an initial array (the first argument in 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.

**Note**  
You have to use the `arguments` object.

# --hints--

`destroyer([1, 2, 3, 1, 2, 3], 2, 3)` should return `[1, 1]`.

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

`destroyer([1, 2, 3, 5, 1, 2, 3], 2, 3)` should return `[1, 5, 1]`.

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

`destroyer([3, 5, 1, 2, 2], 2, 3, 5)` should return `[1]`.

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

`destroyer([2, 3, 2, 3], 2, 3)` should return `[]`.

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

`destroyer(["tree", "hamburger", 53], "tree", 53)` should return `["hamburger"]`.

```js
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")` should return `[12,92,65]`.

```js
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--

```js
function destroyer(arr) {
  return arr;
}

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

# --solutions--

```js
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);
```