Coding dojo. The most interesting parts are from row 123 to 149.

extreme_startup.js

var express = require("express");

/* Reimplement this function to answer questions. */

var myName = function(matches) {
  return "Tomas";
};

var yourName = function(matches) {
	return matches[1];
};

var compareNumbers = function(matches) {
	var num1 = parseInt(matches[1]);
	var num2 = parseInt(matches[2]);
	if(num2 >= num1) { return num2; }
	return num1+ "";
};

var compareNumbers2 = function(matches) {
	var numbers = matches[1].split(",");
	var largestNumber = parseInt(numbers[0].trim());
	for (var i = 1; i < numbers.length; i++) {
		var candidate = parseInt(numbers[i].trim());
		console.log(candidate);
		if(candidate > largestNumber) {
			largestNumber = candidate;
		}
	}
	return largestNumber + "";
};

var multiply = function(matches) {
	return (parseInt(matches[1]) * parseInt(matches[2])) + "";
};

var drWho = function(matches) {
	return "Sean Connery";
};
var plus = function(matches) {
	return (parseInt(matches[1]) + parseInt(matches[2])) + "";	
};
var minus = function(matches) {
	return (parseInt(matches[1]) - parseInt(matches[2])) + "";	
};
var banana = function(matches) {
	return "yellow";	
};
var isSquare = function(num) {
	return (Math.sqrt(num) % 1 === 0);
};
var isCube = function(num) {
	return (Math.pow(num, 1/3) % 1 === 0);
};

var squareCube = function(matches) {
	var numbers = matches[1].split(",");
	for (var i = 0; i < numbers.length; i++) {
		var num1 = parseInt(numbers[i].trim());
		if(isSquare(num1) && isCube(num1)){
			return num1 + "";
		}
	};
	return "";
};

var pow = function(matches) {
	var num1 = parseInt(matches[1]);
	var num2 = parseInt(matches[2]);
	return Math.pow(num1, num2) + "";
};

var fib = function(matches) {
	var index = parseInt(matches[1]);
	var x0 = 0;
	var x1 = 1;
	var x2;
	if(index < 1) return (index) + "";
	for(var i = 2; i <= index; i++) {
		x2 = x0 + x1;
		x0 = x1;
		x1 = x2;
	}
	return x2 + "";
};

var twitter = function(matches) {
	return "olemartin";
};

var plusMult = function(matches) {
	var num1 = parseInt(matches[1]);
	var num2 = parseInt(matches[2]);
	var num3 = parseInt(matches[3]);
	return (num1 + num2 * num3) + "";
}; 

var plusPlus = function(matches) {
	var num1 = parseInt(matches[1]);
	var num2 = parseInt(matches[2]);
	var num3 = parseInt(matches[3]);
	return (num1 + num2) + num3 + "";
};

function isPrime(n) {
	if (isNaN(n) || !isFinite(n) || n%1 || n<2) return false; 
	var m=Math.sqrt(n);
	for (var i=2;i<=m;i++) if (n%i==0) return false;
	return true;
};

var primeCheck = function(matches) {
	var numbers = matches[1].split(",");
	var primes = "";
	for (var i = 0; i < numbers.length; i++) {
		var num = parseInt(numbers[i].trim());
		if(isPrime(num)) {
			return "";
		}
	}
}

var patterns = [
	{ pattern: /^.*what is your name$/, ans: myName },
	{ pattern: /^.*my name is (.*), what is my name$/, ans: yourName },
	{ pattern: /which of the following numbers is the largest: (.*)/, ans: compareNumbers2},
	{ pattern: /what is (.*) multiplied by (\d+)/, ans: multiply},
	{ pattern: /who played James Bond in the film Dr No/, ans: drWho },
	{ pattern: /what is (\d*) plus (\d+)/, ans: plus},
	{ pattern: /what is (\d*) minus (\d*)/, ans: minus},
	{ pattern: /what colour is a banana/, ans: banana},
	{ pattern: /which of the following numbers is both a square and a cube: (\*)/, ans: squareCube},
	{ pattern: /what is (\d+) to the power of (\d+)/, ans: pow },
	{ pattern: /what is the (\d+)th number in the Fibonacci sequence/, ans: fib},
	{ pattern: /what is the twitter id of the organizer of this dojo/, ans: twitter },
	{ pattern: /what is (\d+) plus (\d+) multiplied by (\d+)/, ans: plusMult},
	{ pattern: /what is (\d+) plus (\d+) plus (\d+)/, ans: plusPlus},
	{ pattern: /which of the following numbers are primes: (.*)/, ans: primeCheck }
	];

var answer = function(question, req, res) {
	for (var i = 0; i < patterns.length; i++) {
		var regex = patterns[i].pattern;
		if(regex.test(question)) {
			return patterns[i].ans.call(this, question.match(regex));
		}
	};
    return "";
};

var app = express.createServer();
app.use(express.cookieParser());
app.use(express.session({
    "secret": "tomaspwnz"
}));

app.get("/", function(req, res) {
    var q = req.param("q");
    var a = answer(q, req, res);
    console.log("Q: \"" + q + "\" A:\"" + a + "\"");
    res.end(a);
});

app.listen(1337, "0.0.0.0");
console.log("Server running on http://0.0.0.0:1337/");

/* http://10.0.20.138:3000/players/7ad6c580*/