Vector products

# title: Vector products
# source: https://rosettacode.org/wiki/Vector_products
# category: Rosetta Code
# difficulty: Intro
# summary: Compute the dot product and cross product of two fixed three-dimensional vectors.
# tags: popular, math, vectors, geometry
# vibe: 0.2

def dot(left, right)
  (left[0] * right[0]) + (left[1] * right[1]) + (left[2] * right[2])
end

def cross(left, right)
  [
    (left[1] * right[2]) - (left[2] * right[1]),
    (left[2] * right[0]) - (left[0] * right[2]),
    (left[0] * right[1]) - (left[1] * right[0])
  ]
end

def run
  left = [3, -5, 4]
  right = [2, 6, 5]
  {
    dot: dot(left, right),
    cross: cross(left, right)
  }
end