Contents

module Squares
  extend self

  def square_of_sum(num)
    (num * (num + 1) / 2) ** 2
  end

  def sum_of_squares(num)
    num * (num + 1) * (2 * num + 1) / 6
  end

  def difference_of_squares(num)
    square_of_sum(num) - sum_of_squares(num)
  end
end

Version data entries

370 entries across 370 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.179	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.178	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.177	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.176	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.175	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.174	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.173	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.172	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.171	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.170	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.169	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.167	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.166	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.165	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.164	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.163	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.162	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.161	tracks/crystal/exercises/difference-of-squares/src/example.cr
trackler-2.2.1.160	tracks/crystal/exercises/difference-of-squares/src/example.cr