Determining whether one array contains the contents of another array in ruby

Question

In ruby, how do I test that one array not only has the elements of another array, but contain them in that particular order?

correct_combination = [1, 2, 3, 4, 5         


        

Answer 1

Maybe <=> is what you are looking for.

Comparison—Returns an integer (-1, 0, or +1) if this array is less than, equal to, or greater than other_array

a = [1, 2, 3, 4, 5]
b = [1, 5, 8, 2, 3, 4, 5]
c = [8, 10, 1, 2, 3, 4, 5, 9]

puts a <=> b # => -1
puts a <=> c # => -1
puts a <=> a # => 0

Update: nevermind, just noted it doesn't care about position.

puts a <=> a.reverse # => -1