array = (1..10).to_a# 方法1length = array.length  length.times do |t|   print "#{array[t]} "  end  puts "\n"# 方法2length = array.length-1  for i in 0..length do    print "#{array[i]} "  endputs "\n"# 方法3for i in array do    print "#{i} "  end puts "\n"# 方法4array.each{|x| print x," "}puts "\n"# 方法5length = array.length  i = 0  while i< length do    print "#{array[i]} "    i = i+1  end puts "\n"# 方法6length = array.length  i = 0  until i==length do    print "#{array[i]} "    i += 1  end  puts "\n"# 方法7array.each_index do |i|      print "#{array[i]} "  end  puts "\n"# 方法8length = array.length - 1  0.upto(length) do |i|  print "#{array[i]} "  endputs "\n"# 方法9length = array.length - 1  i = 0  loop do    print "#{array[i]} "    i += 1    break if i > length #也可以用break unless i <= length   end  

ruby各种循环输出数组元素