game.js

function popRandom(arr) {
  const index = Math.floor(Math.random() * arr.length);
  const value = arr[index];
  arr.splice(index, 1);
  return value;
}

function playRandomStrategy(playerCards, bountyCard) {
  const card = popRandom(playerCards);
  console.log(`\tPlayer 0 plays: ${card}`);
  return card;
}

function playEqualStrategy(playerCards, bountyCard) {
  playerCards.splice(playerCards.indexOf(bountyCard), 1);
  console.log(`\tPlayer 1 plays: ${bountyCard}`);
  return bountyCard;
}

function runGame() {
  let turn = 0;
  let bountyCards = [1, 2, 3, 4, 5, 6, 7, 8];
  let playerCards = [[1, 2, 3, 4, 5, 6, 7, 8],
                     [1, 2, 3, 4, 5, 6, 7, 8]];
  let playerScores = [0, 0];
  
  while(bountyCards.length > 0) {
    const bountyCard = popRandom(bountyCards);
   
    console.log(`Turn ${turn}: Bounty: ${bountyCard}`);
    
    const card0 = playRandomStrategy(playerCards[0], bountyCard);
    const card1 = playEqualStrategy(playerCards[1], bountyCard);
    turn += 1;
    
    if (card0 > card1) {
      playerScores[0] += bountyCard;
    } else if (card1 > card0) {
      playerScores[1] += bountyCard;
    }
  }
  
  console.log(`Scores ${playerScores[0]} v ${playerScores[1]}`);
  
  if (playerScores[0] == playerScores[1]) {
    console.log("Players Tie!");
  } else if (playerScores[0] > playerScores[1]) {
    console.log("Player 0 Wins!");
  } else {
    console.log("Player 1 Wins!");
  }
}

runGame();