Higher Number Game (algorithms)

higherNumGame.js

const game = (arr, k) => {
  const rec = {};
  let winner;

  while (true) {
    const st = arr[0];
    const nd = arr[1];

    if (st >= nd) {
      arr.push(nd);
      arr.splice(1, 1);
      rec[st] ? rec[st]++ : (rec[st] = 1);
      if (rec[st] === k) {
        winner = st;
        break;
      }
    } else {
      arr.push(st);
      arr.splice(0, 1);
      rec[nd] ? rec[nd]++ : (rec[nd] = 1);
      if (rec[nd] === k) {
        winner = nd;
        break;
      }
    }

    continue;
  }

  return winner;
};

console.log(game([2, 3, 5, 7, 1, 4], 2));