mitrakmt

function translateRomanNumeral (romanNumeral) {

  var DIGIT_VALUES = {
    I: 1,
    V: 5,
    X: 10,
    L: 50,
    C: 100,
    D: 500,
    M: 1000

mitrakmt

// This Binary Search Tree is implemented using the prototypal pattern

var BinarySearchTree = function(value) {
  var instance = Object.create(BinarySearchTree.prototype);

    instance.value = value;
    // a BST where all values are higher than than the current value.
    instance.right = undefined;
    // a binary search tree (BST) where all values are lower than than the current value.
    instance.left = undefined;

mitrakmt

// Prompt: Find the first item that occurs an even number of times in an array. Remember to handle multiple even-occurrence items and return the first one. Return null if there are no even-occurrence items.

function evenOccurrence (array) {
  // Store counts
  var storage = {};

  // Store each value within the storage object to keep count
  array.forEach(function(value, index) {
    storage[value] = storage[value] + 1 || 1;

mitrakmt

function getAllPermutations(string) {
  var results = [];

  if (string.length === 1) {
    results.push(string);
    return results;
  }

  for (var i = 0; i < string.length; i++) {
    var firstChar = string[i];

mitrakmt

// This Stack is written using the pseudoclassical pattern

// Creates the queue
var Queue = function() {
    this.storage = {};
    this.count = 0;
    this.lowestCount = 0;
}

// Adds a value to the end of the chain

mitrakmt

// This Stack is written using the pseudoclassical pattern

// Creates a stack
var Stack = function() {
    this.count = 0;
    this.storage = {};
}

// Adds a value onto the end of the stack
Stack.prototype.push = function(value) {

mitrakmt

function getParent(snapshot) {
  // You can get the reference (A Firebase object) from a snapshot
  // using .ref().
  var ref = snapshot.ref();
  // Now simply find the parent and return the name.
  return ref.parent().name();
}

var testRef = new Firebase("https://example.firebaseIO-demo.com/foo/bar");
testRef.once("value", function(snapshot) {

mitrakmt

function pushSomething(ref) {
  // Let's push something. push() returns a reference that you can hold onto!
  var justPushed = ref.push({test: "push"});
  // We return a reference, but you can also return the name of the newly
  // created object with .name().
  return justPushed;
}

function removeItem(ref) {
  // Now we can get back to that item we just pushed via .child().

mitrakmt

function go() {
  var userId = prompt('Username?', 'Guest');
  // Consider adding '/<unique id>' if you have multiple games.
  var gameRef = new Firebase(GAME_LOCATION);
  assignPlayerNumberAndPlayGame(userId, gameRef);
};

// The maximum number of players.  If there are already 
// NUM_PLAYERS assigned, users won't be able to join the game.
var NUM_PLAYERS = 4;

mitrakmt

function go() {
  var userId = prompt('Username?', 'Guest');
  var userData = { name: userId };
  tryCreateUser(userId, userData);
}

var USERS_LOCATION = 'https://SampleChat.firebaseIO-demo.com/users';

function userCreated(userId, success) {
  if (!success) {