2018-07-26 Bits, Please! Code Fight

perfectCity.rb

def perfectCity(departure, destination)
  diff(departure[0], destination[0]) + diff(departure[1], destination[1])
end

def diff(dep, dest)
  naiveDiff = (dep - dest).abs
  extraDiff = 0
  if dep.ceil == dest.ceil
    lower, higher = [dep, dest].sort
    extraDiff = [lower - lower.floor, higher.ceil - higher].min * 2
  end
  naiveDiff + extraDiff
end