gistfile1.rb

def rock_judger(rocks_arr)    
    if rocks_arr.length <= 2  # the base case
      a = rocks_arr[0]
      b = rocks_arr[-1]
    else
      a = rock_judger(rocks_arr.slice!(0,rocks_arr.length/2))
      b = rock_judger(rocks_arr)
    end    
    
    return a > b ? a : b
end

 
rocks = 30.times.map{rand(200) + 1}
puts rocks.join(', ')
puts "Heaviest rock is: #{rock_judger(rocks)}"