--%>
Assignment Help - homework help

Define Container Abstractions

Container Abstractions: Abstractions for containers (such as lists, stacks, sets, or queues) may represent just the state of a container—e.g., full or empty—and abstract away from the actual container content. The list operations also need to be abstracted. For example, consider the operation insert(l,x) which adds element x to the end of list l. The corresponding abstract operation will have the following definition:

Insert(full, x) ≡ Insert(empty, x) ≡ full

You can also use container abstractions in conjunction with the symbolic data abstractions presented above. Consider, for example, an abstraction that supports reasoning about ordered lists. This abstraction represents the behavior of lists that contain elements which were themselves abstracted using the abstract domain {d1, d2,other}. Conceptually, the abstract list records whether the list contains a specific d1 value; the list also records the ordering of two inserted elements d1 and d2, but the abstraction does not record any information about the size of the list.

   Related Questions in Programming Languages

  • Q : Interface accessibility modifier Inside

    Inside the interface accessibility modifier we can use for methods?

    		•
  • Q : Explain Inheritance hierarchy

    Inheritance hierarchy: The relationship among super-classes and sub-classes is termed as an inheritance hierarchy. The single inheritance of classes means that each and every class has simply a single `parent' class and that Object class is the eventu

    		•
  • Q : Describe Method result Method result :

    Method result: The value returned from a method through a return statement. The kind of expression in the return statement should match the return type declared in method header.

    		•
  • Q : Questions on java class Array 1.

    1. Suppose we have a class A which has a constructor that takes a single integer. (a) After the following statements have been executed, how many A objects will exist

  • Q : Program is prone to deadlock when

      Give a brief introduction about the operation of your program and show that you understand the idea behind threads and mutual exclusion variable. Why do we need to use mutual exclusion to control the access of the three global variables? What is the potential p

    		•
  • Q : What is Pop-up menu Pop-up menu : A

    Pop-up menu: A menu of actions which is generally not visible on the screen till a mouse button is clicked. The Popup menus assist to keep a user interface from becoming cluttered.

    		•
  • Q : State the term dispatcher State the

    State the term dispatcher.

    		•
  • Q : Level-triggering interrupt Normal 0

    Normal 0 false false

  • Q : How does XML maintain white-space in

    How does XML maintain white-space in any documents?

    		•
  • Q : Define the term Writer class Writer

    Writer class: It is a sub class of the Writer abstract, stated in the java.io package. The writer classes translate output from Unicode to the host-dependent character set encoding.

    		•