ruby reorder keys in hash

To reorder keys in a Ruby hash, you can follow these steps:

  1. Convert the hash to an array of key-value pairs using the to_a method. This will create an array where each element is a two-element array representing a key-value pair from the original hash.
  2. Sort the array of key-value pairs based on the desired order of the keys. You can use the sort_by method, providing a block that specifies the desired order. For example, if you want to sort the keys in ascending order, you can use sort_by { |key, value| key }.
  3. Convert the sorted array back into a hash using the to_h method. This will create a new hash with the keys in the desired order.

Here is an example that demonstrates these steps:

hash = { "b" => 2, "a" => 1, "c" => 3 }

sorted_hash = hash.to_a.sort_by { |key, value| key }.to_h

puts sorted_hash

Output:

{"a"=>1, "b"=>2, "c"=>3}

In this example, the original hash has keys "b", "a", and "c". After applying the steps outlined above, the keys are reordered to "a", "b", and "c", resulting in a new hash.