What is a container class? What are the types of container classes?

  1. What is a container class? What are the types of container classes? A container class is a class that is used to hold objects in memory or
    external storage. A container class acts as a generic holder. A
    container class has a predefined behavior and a well-known interface. A
    container class is a supporting class whose purpose is to hide the
    topology used for maintaining the list of objects in memory. When a
    container class contains a group of mixed objects, the container is
    called a heterogeneous container; when the container is holding a group
    of objects that are all the same, the container is called a homogeneous
    container.

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