How to Rotate Elements in an Array in C++ - Step by Step Examples

How to Rotate Elements in an Array in C++ ?

Answer

To rotate elements in an array using C++, you can implement a custom rotation function that shifts elements by a specified number of positions.

✐ Examples

1 Rotate Array of Integers

In this example,

We have a vector named intVector containing integers.
We implement a custom rotateArray function that shifts elements by a specified number of positions.
We print the rotated vector to demonstrate the rotation.

C++ Program

#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;

void rotateArray(vector<int>& array, int positions) {
    positions %= array.size();
    reverse(array.begin(), array.end());
    reverse(array.begin(), array.begin() + positions);
    reverse(array.begin() + positions, array.end());
}

int main() {
    vector<int> intVector = {1, 2, 3, 4, 5};
    int positions = 2;
    rotateArray(intVector, positions);
    cout << "Rotated Vector: [";
    for (int i = 0; i < intVector.size(); i++) {
        cout << intVector[i];
        if (i != intVector.size() - 1) cout << ", ";
    }
    cout << "]" << endl;
    return 0;
}

Output

Rotated Vector: [4, 5, 1, 2, 3]

2 Rotate Array of Strings

In this example,

We have a vector named strVector containing strings.
We implement a custom rotateArray function that shifts elements by a specified number of positions.
We print the rotated vector to demonstrate the rotation.

C++ Program

#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
using namespace std;

void rotateArray(vector<string>& array, int positions) {
    positions %= array.size();
    reverse(array.begin(), array.end());
    reverse(array.begin(), array.begin() + positions);
    reverse(array.begin() + positions, array.end());
}

int main() {
    vector<string> strVector = {"apple", "banana", "cherry", "date", "fig"};
    int positions = 3;
    rotateArray(strVector, positions);
    cout << "Rotated Vector: [";
    for (int i = 0; i < strVector.size(); i++) {
        cout << strVector[i];
        if (i != strVector.size() - 1) cout << ", ";
    }
    cout << "]" << endl;
    return 0;
}

Output

Rotated Vector: [date, fig, apple, banana, cherry]

Summary

In this tutorial, we learned How to Rotate Elements in an Array in C++ language with well detailed examples.

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How to Rotate Elements in an Array in C++ - Step by Step Examples

How to Rotate Elements in an Array in C++ ?

Answer

✐ Examples

1 Rotate Array of Integers

C++ Program

Output

2 Rotate Array of Strings

C++ Program

Output

Summary

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