The Monty Hall Problem

This is my implementation of the Monty Hall problem. More info can be found here: http://meid-up.blogspot.com.au/2014/05/the-monty-hall-problem.html What is a the monty hall problem How do you make a the monty hall problem? This script and codes were developed by Mei Weng Brough-Smyth on 10 January 2022, Monday.

How do I make an the monty hall problem?
  1. The Monty Hall Problem Previews
  2. The Monty Hall Problem HTML Codes
  3. The Monty Hall Problem CSS Codes
  4. The Monty Hall Problem JS Codes
The Monty Hall Problem Previews

The Monty Hall Problem HTML Codes

<!DOCTYPE html>
<html >
<head>
  <meta charset="UTF-8">
  <title>The Monty Hall Problem</title>
  
  
  
      <link rel="stylesheet" href="css/style.css">

  
</head>

<body>
  <head>
  	<link href='https://fonts.googleapis.com/css?family=Open+Sans' rel='stylesheet' type='text/css'>
  <meta charset="utf-8">
  <title>JS Bin</title>
</head>
  
<body id="bohday">
  <h1>The Monty Hall Problem :)</h1>
  <table id="doorsTable">
<tr>
  <td>
    <label for="door1">
      <div class="yay">
        <div class="door">.</div>
        <div class="meh">?</div>
      </div>
    </label>
  </td>
  <td>
    <label for="door2">
      <div class="yay">
        <div class="door">.</div>
        <div class="meh">?</div>
      </div>
    </label>
  </td> 
  <td>
    <label for="door3">
      <div class="yay">
        <div class="door">.</div>
        <div class="meh">?</div>
      </div>
    </label>
  </td>
</tr>
<tr>
  <td><input type="radio" name="door" id="door1" value=0><label for="door1">Door 1</label></td>
  <td><input type="radio" name="door" id="door2" value=1><label for="door2">Door 2</label></td> 
  <td><input type="radio" name="door" id="door3" value=2><label for="door3">Door 3</label></td>
</tr>
</table>
  
  <center>or<br>
  <input type="radio" name="door" id="random" value="Randomise!" checked><label for="random">Randomise!</label></center></p>
  
  <input id="switch" type="checkbox" checked><label for="switch">Always switch</label></input></p>

<label for="input">Number of games</label> <input id="input" placeholder="Number of games" value="10"/> </p>

<p align="right"><button onclick="newGame()">Run Games</button></p>
<hr>
<h3><div id="wins">┗(-_-)┛┏(-_-)┓┏(-_-)┛┗(-_- )┓┗(-_-)┛┏(-_-)┓</div>
  <div id="totalGames">┏(-_-)┓┏(-_-)┛┗(-_- )┓┗(-_-)┛┏(-_-)┓┏(-_-)┛</div></h3>
<h1><div id="winRate">┗(-_-)┛┏(-_-)┓┏(-_-)┛┏(-_-)┓</div></h1>
<div id="console">
  Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. He then says to you, "Do you want to pick door No. 2?" Is it to your advantage to switch your choice?<br>
<a href="http://en.wikipedia.org/wiki/Monty_Hall_problem">http://en.wikipedia.org/wiki/Monty_Hall_problem</a>
</div>
<p align="right"><button onclick="beepboop()">Clear</button></p>

</body>
  
    <script src="js/index.js"></script>

</body>
</html>

The Monty Hall Problem CSS Codes

#bohday {
		font-family: 'Open Sans', 'sans-serif';
		background-color: skyBlue;
		color: white;
        max-width: 700px;
        margin-left:auto;
        margin-right:auto;
		}

#wins, #totalGames, #winRate   {
        white-space: nowrap
}

a       {
        color:white;
}

#doorsTable   {
        width:100%;
        text-align:center;
}

.yay    {
        position:relative;
        width:100px;
        height:180px;
        margin-left:auto;
        margin-right:auto;
}

.door   {
        width:100px;
        height:180px;
        margin:20px;
        background:brown;
        color: white;
        line-height:140px;
        text-align:right;
        font-size:100px;
        margin-left:auto;
        margin-right:auto;
}

.door:hover {
    -webkit-animation: open 0.75s ease;
}


@-webkit-keyframes open {
    from {
       -webkit-transform: perspective(300) rotateY(0deg);
       -webkit-transform-origin: 0% 0%;
    }
    to {
       -webkit-transform: perspective(300) rotateY(-180deg);
       -webkit-transform-origin: 0% 50%;
    }
}

.meh    {
        width:100px;
        height:180px;
        top:-5px;
        left:-5px;
        position:absolute;
        z-index:-1;
        background:black;
        text-align:center;
        vertical-align: middle;
        line-height: 180px;
        color: white;
        font-size: 50px;
        margin-left:auto;
        margin-right:auto;
        border:solid;
        border-width:5px;
        border-bottom:0px;
        border-color:gold;
}

#console {
		overflow-y: scroll;
		height: 190px;
        border: solid;
        border-width:1px;
        background-color:rgba(255,255,255,0.2);
		}

The Monty Hall Problem JS Codes

// Made by Mei Weng Brough-Smyth
// https://www.beepboop.com.au/2014/05/the-monty-hall-problem.html

var doorSelected;
var willSwitch;
var noOfGames;
var input;

var doorOpened = 0;
var timesWon = 0;
var totalGames = 0;

var consoleOut = document.getElementById("console");

function newGame() {
  // Get WillSwitch input
  willSwitch = (document.getElementById("switch").checked)? true : false;
  
  // Get Radio input
  var radios = document.getElementsByName('door');
  for (var i = 0, length = radios.length; i < length; i++)   {
    if (radios[i].checked) {
        doorSelected = radios[i].value;
        break;
    }
  }
  if (doorSelected === "Randomise!") {
    doorSelected = Math.floor(Math.random() * 3);
  }
  doorSelected = parseInt(doorSelected, 10);
  
  // Get number of Games
  input = document.getElementById('input').value;
  noOfGames = input.match(/^\d+$/);
  
  // Get random winning door
  var winningDoor = Math.floor(Math.random() * 3);

  // Initialise game
  var game = [false, false, false];
  game[winningDoor] = true;
  
  // Initialise player perspective
  var player = [null, null, null];
  
  player[doorSelected] = "doorSelected";
  
  // Door select output
  doorSelectedOut = doorSelected + 1;
  consoleOut.innerHTML += "You select door " + doorSelectedOut + ".<br>";
  
  // Find door door to open
  doorOpened = doorSelected + 1;
  if (doorOpened > 2) { //If it's too high, bring it back down into our array
     doorOpened = doorOpened - 3;
  }
  if (game[doorOpened] === true) { //Move opened door along if it's the winning door
     doorOpened++;
  }
  
  // Door opened output and append to player array
  doorOpenedOut = doorOpened + 1;
  consoleOut.innerHTML += "Door " + doorOpenedOut + " is opened to reveal nothing.<br>";
  player[doorOpened] = "doorOpened";
  
  if (willSwitch === true) {
    for (var j = 0; j < player.length; j++) {
      if (player[j] === null) {
        // Get player to switch to null in player array and output
        jOut = j+1;
        consoleOut.innerHTML += ("You switch to door " + jOut + ".<br>");
        if (game[j] === true) {
          timesWon++; // Check if switched door is this winning door
          consoleOut.innerHTML += ("<b>You win!<br></b>");
        } else {
          consoleOut.innerHTML += ("<b>You lose.<br></b>");
        }
      }
    }
  } else {
    for (var k = 0; k < player.length; k++) {
      if (player[k] === "doorSelected") {
        consoleOut.innerHTML += "You stick with " + doorSelectedOut + "<br>";
        if (game[doorSelected] === true) {
          timesWon++; // Check if initial door is this winning door
          consoleOut.innerHTML += ("<b>You win!<br></b>");
        } else {
          consoleOut.innerHTML += ("<b>You lose.<br></b>");
        }
      }
    }
  }
  
  console.log(game);
  console.log(player);
  
  totalGames++;
  
  percentageWon = (timesWon/totalGames*100).toFixed(0) + "%";
  document.getElementById("wins").innerHTML = "Total wins: " + timesWon;
  document.getElementById("totalGames").innerHTML = "Total games: " + totalGames;
  document.getElementById("winRate").innerHTML = "Win rate: " + percentageWon;
  consoleOut.innerHTML += "----------------------------------------------------------<br>";
  if (totalGames < noOfGames) {
    newGame();
  } else {
    consoleOut.innerHTML += "<b>End game number " + totalGames + "! \\(^w^)/ </b><br>";
    reset();
  }
}

function reset() {
  timesWon = 0;
  totalGames = 0;
  consoleOut.scrollTop = consoleOut.scrollHeight;
}

function beepboop() {
  consoleOut.innerHTML = "";
  document.getElementById("console").innerHTML = "Suppose you're on a game show, and you're given the choice of three doors: Behind one door is a car; behind the others, goats. You pick a door, say No. 1, and the host, who knows what's behind the doors, opens another door, say No. 3, which has a goat. He then says to you, \"Do you want to pick door No. 2?\" Is it to your advantage to switch your choice?<br><a href=\"http://en.wikipedia.org/wiki/Monty_Hall_problem\">http://en.wikipedia.org/wiki/Monty_Hall_problem</a>";
  document.getElementById("wins").innerHTML = "┗(-_-)┛┏(-_-)┓┏(-_-)┛┗(-_- )┓┗(-_-)┛┏(-_-)┓";
  document.getElementById("totalGames").innerHTML = "┏(-_-)┓┏(-_-)┛┗(-_- )┓┗(-_-)┛┏(-_-)┓┏(-_-)┛";
  document.getElementById("winRate").innerHTML = "┗(-_-)┛┏(-_-)┓┏(-_-)┛┏(-_-)┓";
}
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