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JavaScript: Stack Data Structure
class Stack {
constructor() {
this.items = [];
}
push(elements) {
this.items.push(elements);
}
pop() {
return this.items.pop();
}
peek() {
return this.items[this.items.length - 1];
}
isEmpty() {
return this.items.length === 0;
}
clear() {
this.items = [];
}
size() {
return this.items.length;
}
toString() {
return this.items.toString();
}
}
const books = new Stack();
books.push("The Hobbit");
books.push("LOTR: The Fellowship of the Ring");
books.push("LOTR: The Two Towers");
books.push("LOTR: The Return of the King");
console.log(books.peek()); // => "LOTR: The Return of the King"
books.pop();
books.pop();
console.log(books.toString()); // => "The Hobbit,LOTR: The Fellowship of the Ring"
console.log(books.size()); // => 2
books.clear();
console.log(books.isEmpty()); // => true
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