How to divide an array into smaller sections without utilizing additional storage space?

edit retag close merge delete

Sort by ยป oldest newest most voted

You can divide an array into smaller sections without utilizing additional storage space by using pointers.

One way to do this is by creating a pointer variable and initializing it to point to the first element of the array. You can then use a loop to iterate through the array and perform operations on the elements using the pointer variable.

To divide the array into smaller sections, you can simply move the pointer variable to point to the next element after the section has been processed. For example, if you want to divide the array into three equal sections, you can use a loop to process the first section and then move the pointer variable forward by one-third of the array length. You can repeat this process for the remaining sections.

Here's an example of how you can divide an array into two sections using pointers in C++:

int array[] = {1, 2, 3, 4, 5};
int* ptr = array; // initialize pointer variable to point to first element of array

// process first section of array
for (int i = 0; i < 3; i++) {
cout << *ptr << " "; // print element at pointer variable
ptr++; // move pointer variable to next element
}
cout << endl;

// process second section of array
for (int i = 0; i < 2; i++) {
cout << *ptr << " ";
ptr++; // move pointer variable to next element
}
cout << endl;

Output:

1 2 3
4 5

In this example, we initialize the pointer variable ptr to point to the first element of the array array. We then process the first section of the array by iterating through the first three elements using the pointer variable ptr. After processing the first section, we move the pointer variable forward by three elements to point to the fourth element of the array. We then process the second section of the array using the pointer variable ptr.

more