function dumbRockPaperScissors(player1, player2) {
  let answers = [player1, player2];
  
  let winners = [
    ['Rock', 'Scissors'],
    ['Scissors', 'Paper'],
    ['Paper', 'Rock']
  ]
  
  let wouldBeat = [];
  for (let a = 0; a < answers.length; a++) {
    for (let w = 0; w < winners.length; w++) {
      if (answers[a] == winners[w][0]) {
        wouldBeat.push(winners[w][1])
      }
    }
  }
  
  if (answers[1] == wouldBeat[0]) {
    return 'Player 1 wins';
  }
  if (answers[0] == wouldBeat[1]) {
    return 'Player 2 wins';
  }
  return 'Draw';
}

const firstNonRepeatingCharacter = (str) => {
    if (str == '') return null;
    let charMap = {};
    for (let i = 0; i < str.length; i++) {
      let thisChar = str[i];
      if (!charMap[thisChar]) {
        charMap[thisChar] = 1;
      } else {
        charMap[thisChar] = charMap[thisChar] + 1;
      }
    }
    for (let i = 0; i < str.length; i++) {
      let thisChar = str[i];
      if (charMap[thisChar] == 1) {
        return thisChar;
      }
    }
    return null;
};