euler/old-ruby/048.rb
2019-06-11 13:43:20 +02:00

12 lines
225 B
Ruby

descr=%{
The series, 1^1 + 2^2 + 3^3 + ... + 10^10 = 10405071317.
Find the last ten digits of the series, 1^1 + 2^2 + 3^3 + ... + 1000^1000.
}
sum=0
(1..1000).each do |n|
sum += n**n
end
puts sum.to_s[-10..-1]