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Queue.js
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function Queue() {
this.dataStore = [];
this.enqueue = enqueue;
this.dequeue = dequeue;
this.length = length;
this.front = front;
this.back = back;
this.toString = toString;
this.empty = empty;
}
function enqueue(element) {
return this.dataStore.push(element);
}
function dequeue() {
return this.dataStore.shift();
}
function length() {
return this.dataStore.length;
}
function front() {
return this.dataStore[0]
}
function back() {
return this.dataStore[this.dataStore.length - 1];
}
function toString() {
var string = "";
for (var i = 0; i < this.dataStore.length; i++) {
string += this.dataStore[i] + "\n";
}
return string;
}
function empty() {
if (this.dataStore.length == 0) {
return true;
}
return false;
}