euler/old-ruby/006.rb
2019-06-11 13:43:20 +02:00

17 lines
231 B
Ruby

def sum_of_square(n)
sum=0
(1..n).each do |x|
sum+=x**2
end
sum
end
def square_of_sum(n)
sum=0
(1..n).each do |x|
sum+=x
end
sum**2
end
puts square_of_sum(100) - sum_of_square(100)