Euler Project Problem #048

euler48.rb

# Solution to Project Euler's forty-eighth problem
# http://projecteuler.net/index.php?section=problems&id=48
# Find the last ten digits of the sum of the sequence 1^1, 2^2, 3^3 ... 1000^1000.
def generate_array(number=1000)
array = (1..number).to_a
array.each_with_index do |exp, i|
	array[i] = exp**exp
end
return array
end
def sum_array(array)
sum = 0
array.each {|n| sum = sum + n}
return sum
end

array = generate_array
sum = sum_array(array)
p sum.to_s.slice(-10..-1)