// Just press Control + Shift + I and copy and paste this entire thing!
// >inb4 somebody says it's malware
// returns a box
function chooseRandomBox(boxes) {
  let randomIndex = Math.floor(Math.random() * boxes.length);
  console.log('selected box: ' + boxes[randomIndex]);
  return boxes[randomIndex];
}

// returns a ball from box selected
function selectBallFromBox(box) {
  let randomIndex = Math.floor(Math.random() * box.length);
  let ball = box[randomIndex];
  console.log('selected ball: ' + ball);
  box.splice(randomIndex, 1);
  return ball;
}
// 0 represents silver, 1 represents golden
function doExperiment(tries) {
  let timesNextBallIsGolden = 0;
  let validTries = 0;
  for (let i = 1; i < tries + 1; i++) {
    console.log('========== TRY #' + i + ' ========== ');
    let boxes = [[0, 0], [0, 1], [1, 1]];
    let boxSelected = chooseRandomBox(boxes);
    if (selectBallFromBox(boxSelected) === 0) {
      console.log('silver ball. Retrying');
      continue;
    } else {
      // only increment tries if first ball is golden
      validTries++;

      // select second ball
      if (selectBallFromBox(boxSelected) === 1) {
        timesNextBallIsGolden++;
      }
    }
    console.log(
      'valid tries: ' +
        validTries +
        ', timesNextBallIsGolden: ' +
        timesNextBallIsGolden +
        ' result: ' +
        timesNextBallIsGolden / tries,
    );
  }
  console.log(
    'tries: ' +
      tries +
      ', timesNextBallIsGolden: ' +
      timesNextBallIsGolden +
      ' , result: ' +
      timesNextBallIsGolden / validTries,
  );
}
doExperiment(500);