STACK IN JAVASCRIPT

 

STACK IN JAVASCRIPT

Implement Stack using array

what is stack ?

Stack is a linear data structure it follows LIFO(Last In First Out) or FILO(First In Last Out) principle.⬇️

PUSH( ) METHOD

push method is used to push an element into end of the Stack. If you add an element they pushed/added in top of the stack.⬇️

POP( ) METHOD

The element is popped from the top of the stack and they displayed from your screen.⬇️

UNSHIFT( ) METHOD

unshift() method is used to add one or more elements to the beginning of the given array…….⬇️

SHIFT( ) METHOD

The shift() method removes the first element from an array and returns that removed element……⬇️

isEmpty()

Return true if the stack is empty………⬇️

peek();

peek method shows top most element in stack………⬇️

size()

It returns the length of the current stack…….…⬇️

clear()

It removes all the items from the Stack……..…⬇️

RECAP

EXERCISE TIME:-

Do it yourself…if you get the output comment below

class Stack {
    constructor() {
        this.items = [];
    }
    
    // add element to the stack
    add(element) {
        return this.items.push(element);
    }
    
    // remove element from the stack
    remove() {
        if(this.items.length > 0) {
            return this.items.pop();
        }
    }
    
    // view the last element
    peek() {
        return this.items[this.items.length - 1];
    }
    
    // check if the stack is empty
    isEmpty(){
       return this.items.length == 0;
    }
   
    // the size of the stack
    size(){
        return this.items.length;
    }
 
    // empty the stack
    clear(){
        this.items = [];
    }
}

let stack = new Stack();
stack.add(100);
stack.add(200);
stack.add(400);

console.log(stack.items);

stack.remove();
console.log(stack.items);

console.log(stack.peek());

console.log(stack.isEmpty());

console.log(stack.size());

stack.clear();
console.log(stack.items);

console.log("GIVE A CLAP IF YOU ENJOYED THIS ARTICLE AND FOLLOW FOR MORE. IT MOTIVATES ME A LOT.🤍");

GIVE A CLAP IF YOU ENJOYED THIS ARTICLE AND FOLLOW FOR MORE. IT MOTIVATES ME A LOT.🤍

𝔻𝕠 𝕪𝕠𝕦 𝕨𝕒𝕟𝕥 𝕡𝕒𝕣𝕥-𝟚 𝕔𝕠𝕞𝕞𝕖𝕟𝕥 𝕓𝕖𝕝𝕠𝕨⬇️

THINK TWICE💭-code once!

THANKS_FOR_READING_!🌟

❤️“Have a Fine_Day”❤️