#ruby實現生產者和消費者代碼 require 'thread'queue = Queue.newconsumers = Thread.new do  5.times do |i|    obj = queue.pop    print "consumer :#{i}/n"    sleep(rand(0.05))  endend producters = Thread.new do  5.times do |i|    sleep(0.1)    print "producter : #{i}/n"    queue.push("Item #{i}")  endend producters.joinconsumers.join