function percentage(partialValue, totalValue) {
    return Math.round((100 * partialValue) / totalValue);
  }
  
  function rand(min, max) {
    min = Math.ceil(min);
    max = Math.floor(max);
    return Math.floor(Math.random() * (max - min + 1)) + min;
  }
  
  const ONE_THOUSAND = 1000;
  const TEN_THOUSAND = ONE_THOUSAND * 10;
  const ONE_HUNDRED_THOUSAND = TEN_THOUSAND * 10;
  const ONE_MILLION = ONE_HUNDRED_THOUSAND * 10;
  
  const numberOfDoors = 3;
  const numberOfTries = 10000;
  
  let originalDoorWins = 0; // la porte gagnante
  let anotherDoorWins = 0; // si on change de porte
  
  for (let i = 0; i < numberOfTries; i++) {
    const myDoor = rand(1, numberOfDoors); // celle que je choisis
    const correctDoor = rand(1, numberOfDoors);
  
    if (myDoor === correctDoor) {
      originalDoorWins++;
    } else {
      anotherDoorWins++;
    }
    //console.log({myDoor, correctDoor});
  }
  
  console.log(`For ${numberOfTries} tries:`);
  
  console.log(
    `${originalDoorWins} wins (${percentage(
      originalDoorWins,
      numberOfTries
    )}%) when keeping the original door.`
  );
  
  console.log(
    `${anotherDoorWins} wins (${percentage(
      anotherDoorWins,
      numberOfTries
    )}%) when picking another door.`
  );