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wrote prototype notation #45

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Merged
christianbender merged 1 commit into from
Mar 30, 2018
Merged

wrote prototype notation #45

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16 changes: 8 additions & 8 deletions Data Structures/Stack/Stack.js
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Original file line number Diff line number Diff line change
Expand Up @@ -7,21 +7,22 @@

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

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

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

//Removes and returns the value at the end of the stack
this.pop = function(){
Stack.prototype.pop = function(){
if(this.top === 0){
return "Stack is Empty";
}
Expand All @@ -33,21 +34,20 @@ var Stack = function () {
}

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

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

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

//Implementation
var myStack = new Stack();
Expand Down