Codecery :: Exercise 003

Exercise-003.rb

##### Perfect Number
puts "This is the perfect number."
x = 30

(x).times do |n|
	(n).downto(1) do |a|
		#puts "a: #{a}"
		d = 0
		(1..a).each do |b|
			if a % b == 0
				#puts "b: #{b}"
				d += b if b != a
			end
		end
		#puts "d: #{d}"
		#puts ''
		if d == a
			puts "Start at number: #{n}"
			puts "The perfect number is: #{d}\n\r"
			break
		end
	end
end



##### Where Decimal
puts "Where are the Decimal number."

print "Input the number sequence: "
m = gets.to_i
#m = 1234567891011121314

print "Input the number N: "
n = gets.to_i
#n = 111

puts "The position is: #{m.to_s.index(n.to_s)+1}"


puts ''