SV What is polymorphism. What is packed array

QUESTION 1 When defining a Java array, the index range of the array: Must start at 1 Must start at 0 Can be a customized range (from 2 to 5, e.g.) at compilation time Can be a customized range (from 2 to 5, e.g.) at run time

create using c++ One problem with dynamic arrays is that once the array is created using the new operator the size cannot be changed. For example, you might want to add or delete entries from the array similar to the behavior of a vector . This project asks you to create a class called DynamicStringArray that includes member functions that allow it to emulate the behavior of a vector of strings. The class should have the following A private member variable called dynamicArray that references a dynamic array of type string. A private member variable called size that holds the number of entries in the array. A default constructor that sets the dynamic array to NULL and sets size to 0. A function that returns size . A function named addEntry that takes a string as input. The function should create a new dynamic array one element larger than dynamicArray , copy all elements from dynamicArray into the new array, add the new string onto the end of the new array, increment size, delete the…

Classes, Objects, Pointers and Dynamic Memory Program Description: This assignment you will need to create your own string class. For the name of the class, use your initials from your name.  The MYString objects will hold a cstring and allow it to be used and changed. We will be changing this class over the next couple programs, to be adding more features to it (and correcting some problems that the program has in this simple version). Your MYString class needs to be written using the .h and .cpp format. Inside the class we will have the following data members: Member Data Description char * str pointer to dynamic memory for storing the string int cap size of the memory that is available to be used(start with 20 char's and then double it whenever this is not enough) int end index of the end of the string (the '\0' char) The class will store the string in dynamic memory that is pointed to with the pointer. When you first create an MYString object you should…

Discuss the following. a. Pointersb. Arraysc. Structuresd. Classese. functions

Non of Li QUESTION 14 Which of the following is a reason to use an ArrayList instead of an array? O a. An array list is supported by Java while array is not. O b. An array has faster access to its elements than a list does. OC. An ArrayList can grow or shrink as needed, while an array is always the same size O d. You can store objects in an ArrayList, but not in an array. QUESTION 15 What are the indices for the followirs array