The Monty Hall Problem

MontyHall.js

function monty() {
  var runProblem = 1000;

  var switchWins = 0; // = change answer
  var switchLosses = 0;
  var holdWins = 0; // = keep user_choice
  var holdLosses = 0;

  for (var i = 1; i <= runProblem; i++) {
    // random user choice (what door they picked)
    var user_choice = Math.floor(Math.random() * 3);

    if (user_choice === 0) {
      switchLosses++;
      holdWins++;
    } else if (user_choice === 1) {
      switchWins++;
      holdLosses++;
    } else if (user_choice === 2) {
      switchWins++;
      holdLosses++;
    }
  }
  // log a string with winning and losing percentages
  console.log("Switching wins " +
    Math.floor(switchWins * 100 / (switchWins + switchLosses)) +
    "% of the time.");
  // Wins pct with switch
  console.log("Not switching wins " +
    Math.floor(holdWins * 100 / (holdWins + holdLosses)) +
    "% of the time.");
  // Wins pct with hold 
}

monty();