Javascript Stack

stack.js

  /**
 * @Javascript Stack
 * @author Hatem A. <hatem@tuta.io>
 */
 
  var Stack = function() {
  
    var elements = [];
    var top = 0;

    var push = function(element){
      elements[top++] = element; 
    };
    
    var pop = function() {
      return elements[--top];
    };

    var peek = function() {
      return elements[top-1];
    };
    
    var length = function() {
      return top;
    };
    
    return {push:push,
            pop:pop,
            peek:peek,
            length:length
           };
  };
  
  var stack = new Stack();