Maximum Number of Coins You Can Get

export function maxCoins(piles: number[]): number {
  piles.sort((a, b) => b - a);
 
  const n = (2 * piles.length) / 3;
  let answer = 0;
  for (let i = 1; i < n; i += 2) {
    answer += piles[i];
  }
  return answer;
}