#Hashes
are associative arrays
#Each
data element is paired with a key
#Arrays
use small ints for indexing
#Hashes
use a hash function on a string
kids_ages
= {"Robert" => 16, "Cristina" =>14, "Sarah"
=> 12, "Grace" =>8}
puts
kids_ages
Output
======
Sarah12Cristina14Grace8Robert16