1) write a final parameters, including comparison of M times, The Times, the exchange properties, both times detection write constructors and toString method. (2) write an abstract class A, including to sort of data. Provide three final method respectively, complete comparison, detection and exchange operations at the same time, the correct change private M class object of members related attributes. And provide a virtual method doSort, at the same time provide a final method sort (first set, and then the initial value object M call doSort method, return to M object reference) (3) write three by different methods of sort of A kind of derived class A1, A2, A3 (4) write a test class as the main class respectively, A1, A2, A3 generated the object and call sort method, shows three methods in order of time performance parameters. (5) talk about this kind of the rationality of the design of and can improvements.

MySort\A.class
......\A.ctxt
......\A.java
......\A1.class
......\A1.ctxt
......\A1.java
......\A2.class
......\A2.ctxt
......\A2.java
......\A3.class
......\A3.ctxt
......\A3.java
......\M.class
......\M.ctxt
......\M.java
......\Main.class
......\Main.ctxt
......\Main.java
......\MySort.jar
......\package.bluej
......\README.TXT
MySort

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