小编Hug*_*emy的帖子

我的输入哈希:

h = [
  {user_id: 1, bookings_nd: 3}, 
  {user_id: 2, bookings_nd: 10}, 
  {user_id: 3, bookings_nd: 2}
]

我需要:

h = [
  {user_id: 2, bookings_nd: 10}, 
  {user_id: 1, bookings_nd: 3},
  {user_id: 3, bookings_nd: 2}
]

怎么做？