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Array operations allow us to perform various manipulations on arrays, such as ___, reversing, and rotating. These operations can help us solve different programming problems efficiently.

For example, let's say we have an array of integers:

1int arr[] = {1, 2, 3, 4, 5};

To reverse the array, we can use the std::reverse function from the <algorithm> library:

1#include <iostream>
2#include <algorithm>
3using namespace std;
4
5void printArray(int arr[], int size) {
6  for (int i = 0; i < size; i++) {
7    cout << arr[i] << " ";
8  }
9  cout << endl;
10}
11
12int main() {
13  int arr[] = {1, 2, 3, 4, 5};
14  int size = sizeof(arr) / sizeof(arr[0]);
15
16  cout << "Original Array: ";
17  printArray(arr, size);
18
19  cout << "Reversed Array: ";
20  reverse(arr, arr + size);
21  printArray(arr, size);
22
23  return 0;
24}

After reversing the array, the output will be:

1Original Array: 1 2 3 4 5
2Reversed Array: 5 4 3 2 1

In this example, we use the std::reverse function to reverse the elements in the arr array. The function takes two iterators as parameters, representing the beginning and end of the range to be reversed. After calling the function, the array is reversed in-place.

Array operations like reversing can be useful in scenarios such as reversing the order of elements in an array for processing or displaying purposes. Other array operations, such as merging and rotating, also provide valuable functionality when working with arrays.