Initial data commit

Task/Monty-Hall-problem/JavaScript/monty-hall-problem-5.js

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+var totalGames = 10000,
+    selectDoor = function () {
+	return Math.floor(Math.random() * 3); // Choose a number from 0, 1 and 2.
+    },
+    games = (function () {
+	var i = 0, games = [];
+
+	for (; i < totalGames; ++i) {
+	    games.push(selectDoor()); // Pick a door which will hide the prize.
+	}
+
+	return games;
+    }()),
+    play = function (switchDoor) {
+	var i = 0, j = games.length, winningDoor, randomGuess, totalTimesWon = 0;
+
+	for (; i < j; ++i) {
+	    winningDoor = games[i];
+	    randomGuess = selectDoor();
+	    if ((randomGuess === winningDoor && !switchDoor) ||
+		(randomGuess !== winningDoor && switchDoor))
+	    {
+		/*
+		 * If I initially guessed the winning door and didn't switch,
+		 * or if I initially guessed a losing door but then switched,
+		 * I've won.
+		 *
+		 * I lose when I initially guess the winning door and then switch,
+                 * or initially guess a losing door and don't switch.
+		 */
+
+		totalTimesWon++;
+	    }
+	}
+	return totalTimesWon;
+    };
+
+/*
+ * Start the simulation
+ */
+
+console.log("Playing " + totalGames + " games");
+console.log("Wins when not switching door", play(false));
+console.log("Wins when switching door", play(true));