sfrapoport

var canvas = document.getElementById('canvas'),
    ctx = canvas.getContext('2d'),
    timeBetweenSprites = 100, // measured in in milliseconds
    direction = "forward";

canvas.width = 400;
canvas.height = 400;

// first figure out how big the spritesheet is (pixel dimensions)
var spritesheet = new Image();

sfrapoport

//Tic Tac Toe game for the JavaScript console

//Constants

//Array of potential winning cell combinations
var winCells = [[1,2,3], [4,5,6], [7,8,9], [1,4,7], [2,5,8], [3,6,9], [1,5,9], [3,5,7]];

//Board model

function Board() {

sfrapoport

function mergeSort(arr) {
	var len, arr1, arr2;
	len = arr.length;
	if (len===1) {
		return arr;
	}
	//Split array in half
	arr1 = arr.slice(0, Math.floor(len/2));
	arr2 = arr.slice(Math.floor(len/2));
	//Call mergeSort on each half

sfrapoport

function findFirst(str, set) {
	//Helper function to convert string into a hash object
	function hashFromStr(str) {
		var setHash = {}, 
			key;
		for (var i=0, len=str.length; i<len; i++) {
			key = str[i];
			if (setHash.hasOwnProperty(key)) {
				setHash[key]++;
			} else {