Stack

Directions

Create a stack data structure.
The stack should be a class with methods 'push', 'pop', and 'peek'.
Adding an element to the stack should store it until it is removed.
examples:

const s = new Stack();
s.push(1);
s.push(2);
s.pop(); // returns 2
s.pop(); // returns 1

Solutions

SG Solution

class Stack {
    constructor() {
        this.data = [];
    }

    push(record) {
        this.data.push(record);
    }

    pop() {
        return this.data.pop();
    }

    peek() {
        return this.data[this.data.length - 1];
    }
}

Made with