Aug 3, 2017
diff --git a/Data Structures/Stack/Stack.js b/Data Structures/Stack/Stack.js
 /* Stack!!
 * A stack is exactly what it sounds like. An element gets added to the top of
 * the stack and only the element on the top may be removed. This is an example
 * of an array implementation of a Stack. So an element can only be added/removed
 * from the end of the array.
 */

 // Functions: push, pop, peek, view, length

 //Creates a stack
 var Stack = function () {
  //The top of the Stack
  this.top=0;
  //The array representation of the stack
  this.stack = {};

  //Adds a value onto the end of the stack
  this.push=function(value) {
    this.stack[this.top]=value;
    this.top++;
  }

  //Removes and returns the value at the end of the stack
  this.pop = function(){
    if(this.top === 0){
      return "Stack is Empty";
    }

    this.top--;
    var result = this.stack[this.top];
    delete this.stack[this.top];
    return result;
  }

  //Returns the size of the stack
  this.size = function(){
    return this.top;
  }

  //Returns the value at the end of the stack
  this.peek = function(){
    return this.stack[this.top-1];
  }

  //To see all the elements in the stack
  this.view= function(){
    for(var i=0;i<this.top;i++)
      console.log(this.stack[i]);
  }
 }

 //Implementation
 var myStack = new Stack();

 myStack.push(1);
 myStack.push(5);
 myStack.push(76);
 myStack.push(69);
 myStack.push(32);
 myStack.push(54);
 console.log(myStack.size());
 console.log(myStack.peek());
 console.log(myStack.pop());
 console.log(myStack.peek());
 console.log(myStack.pop());
 console.log(myStack.peek());
 myStack.push(55);
 console.log(myStack.peek());
 myStack.view();
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,69 @@
		/* Stack!!
		* A stack is exactly what it sounds like. An element gets added to the top of
		* the stack and only the element on the top may be removed. This is an example
		* of an array implementation of a Stack. So an element can only be added/removed
		* from the end of the array.
		*/

		// Functions: push, pop, peek, view, length

		//Creates a stack
		var Stack = function () {
		//The top of the Stack
		this.top=0;
		//The array representation of the stack
		this.stack = {};

		//Adds a value onto the end of the stack
		this.push=function(value) {
		this.stack[this.top]=value;
		this.top++;
		}

		//Removes and returns the value at the end of the stack
		this.pop = function(){
		if(this.top === 0){
		return "Stack is Empty";
		}

		this.top--;
		var result = this.stack[this.top];
		delete this.stack[this.top];
		return result;
		}

		//Returns the size of the stack
		this.size = function(){
		return this.top;
		}

		//Returns the value at the end of the stack
		this.peek = function(){
		return this.stack[this.top-1];
		}

		//To see all the elements in the stack
		this.view= function(){
		for(var i=0;i<this.top;i++)
		console.log(this.stack[i]);
		}
		}

		//Implementation
		var myStack = new Stack();

		myStack.push(1);
		myStack.push(5);
		myStack.push(76);
		myStack.push(69);
		myStack.push(32);
		myStack.push(54);
		console.log(myStack.size());
		console.log(myStack.peek());
		console.log(myStack.pop());
		console.log(myStack.peek());
		console.log(myStack.pop());
		console.log(myStack.peek());
		myStack.push(55);
		console.log(myStack.peek());
		myStack.view();