To sort an array by an object key in reverse order, you can…
To sort an array by an object key in reverse order, you can do the same thing but with the `reverse` method. For example:
array = [{name:"John", age:34}, {name:"Sarah", age:31}, {name:"Bob", age:27}]
sorted_array = array.sort_by{|obj| obj[:age]}.reverse #=> [{name:"John", age:34}, {name:"Sarah", age:31}, {name:"Bob", age:27}]