# Perform a Union on Two Sets

## Solutions

Solution 1 (Click to Show/Hide)
``````function Set() {
var collection = [];

this.has = function(element) {
return (collection.indexOf(element) !== -1);
};

this.values = function() {
return collection;
};

if(!this.has(element)){
collection.push(element);
return true;
}
return false;
};

this.remove = function(element) {
if(this.has(element)){
var index = collection.indexOf(element);
collection.splice(index,1);
return true;
}
return false;
};

this.size = function() {
return collection.length;
};

this.union = function(anotherSet){
const newSet = new Set();
return newSet;
};
}
``````
Solution 2 (Click to Show/Hide)
``````class Set {
constructor() {
this.dictionary = {};
this.length = 0;
}

has(element) {
return this.dictionary[element] !== undefined;
}

values() {
return Object.keys(this.dictionary);
}

if (!this.has(element)) {
this.dictionary[element] = true;
this.length++;
return true;
}

return false;
}

remove(element) {
if (this.has(element)) {
delete this.dictionary[element];
this.length--;
return true;
}

return false;
}

size() {
return this.length;
}

union(set) {
const newSet = new Set();
this.values().forEach(value => {