How does a dynamic array differ from a static array?

How does a dynamic array differ from a static array?

• A. A dynamic array has a fixed size, while a static array can change size
• B. A dynamic array can grow or shrink in size during runtime, while a static array cannot
• C. A dynamic array is less efficient than a static array
• D. A dynamic array requires more memory than a static array

Answer: (B)

The distinction between dynamic arrays and static arrays primarily revolves around their ability to change size during program execution. A dynamic array is designed to allow for flexibility in size, meaning it can grow or shrink as needed while the program is running. This adaptability is essential in scenarios where the number of elements to store is not known in advance or may change due to user input or other runtime conditions. In contrast, a static array has a fixed size that must be defined at the time of its declaration. Once set, the size cannot be altered, which can lead to inefficient use of memory if the allocated space is not fully utilized, or it can result in overflow errors if the program exceeds the static array's size. This flexibility in sizing for dynamic arrays makes them particularly useful in a variety of applications where data structures need to adjust to changes in volume, making choice B the correct response.

The distinction between dynamic arrays and static arrays primarily revolves around their ability to change size during program execution. A dynamic array is designed to allow for flexibility in size, meaning it can grow or shrink as needed while the program is running. This adaptability is essential in scenarios where the number of elements to store is not known in advance or may change due to user input or other runtime conditions.

In contrast, a static array has a fixed size that must be defined at the time of its declaration. Once set, the size cannot be altered, which can lead to inefficient use of memory if the allocated space is not fully utilized, or it can result in overflow errors if the program exceeds the static array's size.

This flexibility in sizing for dynamic arrays makes them particularly useful in a variety of applications where data structures need to adjust to changes in volume, making choice B the correct response.