Takes a string and dictionary, determines whether any dictionary entries are present as substrings.

substrings.rb

# Takes string input, dictionary to determines whether any dictionary
# entries are present as substrings.

def substrings(input,dictionary)
	input.downcase!

	result = Hash.new
	for x in dictionary
		search = input.scan(x).length
		result[x] = search unless search < 1
	end
	
	return result
end

# EXAMPLE
dictionary = ["below","down","go","going"]
puts substrings("below",dictionary)

# below = 1, low = 1