Strategy模式的研究及应用

esign Pattern which not only makes developers more easier to understand the thinking of design but also improves the developer＇s systematic designed capacity to a great extent is significant in the application of Object-Oriented Programming . The origins, solutions and effects of Strategy Pattern are described in details on the basis of the application in data encrypting. The expansion and reusage of software brought by Strategy Pattern are also stated at the same time.