如何反转数组数据？

function reverseArray(arr) {
  var start = 0;
  var end = arr.length - 1;
  
  while (start < end) {
    var temp = arr[start];
    arr[start] = arr[end];
    arr[end] = temp;
    start++;
    end--;
  }
  
  return arr;
}

var array = [1, 2, 3, 4, 5];
console.log(reverseArray(array)); // 输出 [5, 4, 3, 2, 1]

array = [1, 2, 3, 4, 5]
array.reverse()
print(array)  # 输出 [5, 4, 3, 2, 1]

function reverseArray(arr, start, end) {
  if (start >= end) {
    return arr;
  }
  
  var temp = arr[start];
  arr[start] = arr[end];
  arr[end] = temp;
  
  return reverseArray(arr, start + 1, end - 1);
}

var array = [1, 2, 3, 4, 5];
console.log(reverseArray(array, 0, array.length - 1)); // 输出 [5, 4, 3, 2, 1]