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.

HackerRank Ruby Hash - Each problem solution


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