javascript-datastructures-algorithms/stack-array.js at master · allonsmandy/javascript-datastructures-algorithms · GitHub

45 lines (35 loc) · 644 Bytes

class Stack {

constructor() {

this.items = [];

}

push(element) {

this.items.push(element);

}

pop() {

return this.items.pop();

}

peek() {

return this.items[this.items.length - 1];

}

isEmpty() {

return this.items.length === 0;

}

size() {

return this.items.length;

}

clear() {

this.items = [];

}

const stack = new Stack();

console.log(stack.isEmpty()); //true

stack.push(5);

stack.push(8);

console.log(stack.peek()); //8

stack.push(11);

console.log(stack.size()); //3

console.log(stack.isEmpty()); //false

stack.push(15);

stack.pop();

console.log(stack.size()); //2

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