c3155c4f5b
* feat: added solution * fix: solution * fix: changed expression to be be more readable * fix: formatting
33 lines
1019 B
Markdown
33 lines
1019 B
Markdown
---
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title: Create a Set Class
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---
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## Create a Set Class
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### Method:
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- A Set is an abstract data structure.
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- It can store unique value and the collection is unordered.
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- In this challenge, we have to implement `.add()` method. This method should only add unique values to `collection`.
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- The method should return `true`, if the value is sucessfully added to the collection, otherwise it should return `false`.
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### Solution:
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```js
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function Set() {
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// the var collection will hold our set
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var collection = [];
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// this method will check for the presence of an element and return true or false
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this.has = function(element) {
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return (collection.indexOf(element) !== -1);
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};
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// this method will return all the values in the set
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this.values = function() {
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return collection;
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};
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this.add = function(el) {
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return this.has(el) ? false : Boolean(collection.push(el));
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}
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}
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```
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### Resources:
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- [Wikipedia](https://en.wikipedia.org/wiki/Set_(abstract_data_type))
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