In this HackerRank Ruby Hash – Each problem solution the control structure each used on an array. Similarly, it is available for the Hash collection, as well.
On Hash, it works in two ways.
Consider the example
user = {“viv” : 10, “simmy” : 20, “sp2hari” : 30}
Using each, each element can be iterated as
user.each do |key, value|
# some code on individual key, value
end
or
user.each do |arr|
# here arr[0] is the key and arr[1] is the value
end
Your task is to use each and iterate through the collection and print the key-value pair in separate lines.
Problem solution.
def iter_hash(hash)
hash.each do |key, value|
puts key
puts value
end
end
Second solution.
def iter_hash(h)
h.each {|k,v| puts k,v }
end