bubble_sort.rb

array = []
print "配列の数を指定してください："; n = gets.chomp.to_i 
print "最大の数を指定してください："; r = gets.chomp.to_i 
n.times do 
  array << rand(r)
end

count = array.length 

def compare(left,right)
  left <=> right
end

while count != 0
  num1 = array.length - 1 
  num2 = num1 - 1
  
  while num1 != 0
    left = array[num2]
    right  = array[num1]

    if compare(left,right) == 1 #戻り値１で左が大きい
      array[num1], array[num2] = array[num2], array[num1]
    end

    num1 -= 1
    num2 -= 1
  end
  count -= 1
end

print array