From: rashworth <rashworth@...>
Date: 2001-03-12T07:40:02+09:00
Subject: [ruby-talk:12428] Sum of Squares

# The following code does not Sum the squares of the elements.
# Define class Array for Sum of squares
class Array
  def inject(n)
    each { |value| n = yield(n, value) }
    n
  def sumsq
    inject(0) { | n, value | (n * n) + value }
  end
end

[ 1, 2 ].sumsq          # 1 + 4 = 5
[ 1, 1, 0, 1 ].sumsq    # 1 + 1 + 0 + 1 = 3
# Can you tell me what the correct code should be?

Thank you very much.

Bob Ashworth