Sort array of hash by key in descending order in Ruby

Question

This is my input hash:

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

I need the result to be sorted in descending order of 'bookings_nd' rather than 'user_id'. I want it to look like this:

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

How to do it?

probably best not to call your array `h` since this is usually reserved for hashes. — Sagar Pandya, Jul 13 '16 at 22:11
We'd like to see your effort toward solving the problem. Without that it looks like you want us to write your code. Please read "[ask]" including the linked pages, and "[mcve]". — the Tin Man, Jul 13 '16 at 22:20

score 14 · Accepted Answer · edited May 23 '17 at 12:08

14

You can do

h.sort_by! { |k| -k[:bookings_nd] }

or

h.sort_by! { |k| k[:bookings_nd] }.reverse!

edited May 23 '17 at 12:08

Community

answered Jul 13 '16 at 21:54

Ilya Lavrov

1 Answers1