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Binary Magic solution in Creative category for [old] Xs and Os Referee by vincent.tscherter
"use strict";
function xoReferee(a){
return [448,56,7,292,146,73,273,84].reduce(
(b,c)=>b+['X','O'].filter(
b=>RegExp(c.toString(2).replace(/./g,a=>+a?b:".")+"$").test(a.join(""))),'D').substr(-1)}
var assert = require('assert');
if (!global.is_checking) {
assert.equal(xoReferee([
"X.O",
"XX.",
"XOO"]), "X", "Xs wins");
assert.equal(xoReferee([
"OO.",
"XOX",
"XOX"]), "O", "Os wins");
assert.equal(xoReferee([
"OOX",
"XXO",
"OXX"]), "D", "Draw");
assert.equal(xoReferee([
"O.X",
"XX.",
"XOO"]), "X", "Xs wins again");
console.log("Coding complete? Click 'Check' to review your tests and earn cool rewards!");
}
Dec. 15, 2016
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