Final answer:
Arrays initialized on the heap have dynamic memory allocation and can be resized at runtime. They must be manually deallocated to prevent memory leaks.
Step-by-step explanation:
Arrays initialized on the heap in computer programming languages such as C++ and Java are special because they have dynamic memory allocation. This means that the size of the array can be determined at runtime and can be resized if needed. Heap-allocated arrays are created using the new keyword and must be manually deallocated using the delete keyword to prevent memory leaks.
Here's an example in C++:
int* arr = new int[5];
arr[0] = 1;
arr[1] = 2;
arr[2] = 3;
arr[3] = 4;
arr[4] = 5;
delete[] arr;
In this example, an integer array of size 5 is created on the heap using new and assigned values. The delete[] operator is then used to deallocate the memory used by the array.