Merge pull request #46 from christianbender/changed_stack

correspond to the target code of typescript

Data Structures/Stack/Stack.js

@@ -8,7 +8,9 @@
 // Functions: push, pop, peek, view, length
 
 //Creates a stack constructor
-var Stack = function () {
+var Stack = (function () {
+
+  function Stack() {
     //The top of the Stack
     this.top = 0;
     //The array representation of the stack
@@ -19,7 +21,7 @@ var Stack = function () {
   Stack.prototype.push = function (value) {
     this.stack[this.top] = value;
     this.top++;
-  }
+  };
 
   //Removes and returns the value at the end of the stack
   Stack.prototype.pop = function () {
@@ -31,12 +33,12 @@ var Stack = function () {
     var result = this.stack[this.top];
     delete this.stack[this.top];
     return result;
-  }
+  };
 
   //Returns the size of the stack
   Stack.prototype.size = function () {
     return this.top;
-  }
+  };
 
   //Returns the value at the end of the stack
   Stack.prototype.peek = function () {
@@ -47,7 +49,11 @@ var Stack = function () {
   Stack.prototype.view = function () {
     for (var i = 0; i < this.top; i++)
       console.log(this.stack[i]);
-  }
+  };
+
+  return Stack;
+
+}());
 
 //Implementation
 var myStack = new Stack();