Question

A template is already provided for you to create a class called DynamicArray. This class has 3 private attribute:

1) int *arr: dynamically allocated integer array
2) int length: gives actual number of elements in the array
3) int size: give maximum number of elements the array can hold You need to complete the following:
a) Dynamicarray(: Default constructor: set length =0; size =1; allocate memory for arr
b) DynamicArray(int s): set size = s, length =0; allocate memory for arr
c) getLength0: return length of array
d) getElement(int pos): return element at position pos
e) getSize(): return size of the array

Answer 1

The implementation of the DynamicArray class includes creating constructors to initialize the array and its attributes, as well as methods to retrieve the length, size, and elements of the array.

Step-by-step explanation:

The question involves writing a DynamicArray class in C++ with specific functionalities. Here are the implementations for the requested methods:

1. DynamicArray(): Constructs a new dynamic array with a default size. It sets length to 0 and size to 1, and allocates memory for the underlying array.
2. DynamicArray(int s): Constructs a dynamic array with a specified size s, sets length to 0, and allocates memory for the underlying array based on the given size.
3. getLength(): Returns the actual number of elements in the array, which is represented by the length attribute.
4. getElement(int pos): Retrieves the element at the specified position pos in the array.
5. getSize(): Returns the maximum number of elements that the array can hold, which is the value of the size attribute.

The subject of this question is Computers and Technology. This question involves the creation of a class called DynamicArray in the context of programming. The class has three private attributes - int *arr, int length, and int size. The goal is to complete several functions, including the constructor, that allocate memory for the array and return relevant information such as the length and size of the array.