[责任链](%E8%B4%A3%E4%BB%BB%E9%93%BE.md) [命令](%E5%91%BD%E4%BB%A4.md) [迭代器](%E8%BF%AD%E4%BB%A3%E5%99%A8.md) [中介者](%E4%B8%AD%E4%BB%8B%E8%80%85.md) [备忘录](%E5%A4%87%E5%BF%98%E5%BD%95.md) [观察者](%E8%A7%82%E5%AF%9F%E8%80%85.md) [状态](%E7%8A%B6%E6%80%81.md) [策略](%E7%AD%96%E7%95%A5.md) [模板方法](%E6%A8%A1%E6%9D%BF%E6%96%B9%E6%B3%95.md) [访问者](%E8%AE%BF%E9%97%AE%E8%80%85.md)