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Monty Hall problem: Difference between revisions
→{{header|Java}}
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<pre>Switching wins 21924 times.
Staying wins 10844 times.</pre>
=={{header|JavaScript}}==
<!-- http://blog.dreasgrech.com/2011/09/simulating-monty-hall-problem.html -->
<lang javascript>
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.
*
* The only time I lose is when I initially guess the winning door
* and then 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));
</lang>
=={{header|Lua}}==
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