递归地返回数组中的最大值减去最小值

function recursiveMaxMinDifference(arr) {
  if (arr.length === 1) {
    return arr[0];
  } else {
    const mid = Math.floor(arr.length / 2);
    const leftArr = arr.slice(0, mid);
    const rightArr = arr.slice(mid);

    const leftMax = recursiveMaxMinDifference(leftArr);
    const leftMin = recursiveMaxMinDifference(leftArr);
    const rightMax = recursiveMaxMinDifference(rightArr);
    const rightMin = recursiveMaxMinDifference(rightArr);

    const max = Math.max(leftMax, rightMax);
    const min = Math.min(leftMin, rightMin);

    return max - min;
  }
}

const arr = [1, 2, 3, 4, 5];
const result = recursiveMaxMinDifference(arr);
console.log(result);