Move all negative elements to end in c++

C++ program for Move all negative elements to end. Here more solutions.

// Include header file
#include <iostream>
using namespace std;
// C++ program for
// Move all negative elements at the end of array
class MyArray
{
	public:
		// Display array elements
		void display(int arr[], int n)
		{
			for (int i = 0; i < n; i++)
			{
				cout << "  " << arr[i];
			}
			cout << endl;
		}
	// Swap the given array elements
	void swap(int arr[], int start, int end)
	{
		int temp = arr[start];
		arr[start] = arr[end];
		arr[end] = temp;
	}
	// Method which is move negative elements
	void moveNegative(int arr[], int n)
	{
		// first index
		int i = 0;
		// last index
		int j = n - 1;
		while (i < j)
		{
			if (arr[i] < 0 && arr[j] >= 0)
			{
				// When [i] index are have negative value 
				// And [j] is positive then swapping elements values
				this->swap(arr, i, j);
				// Modified index
				i++;
				j--;
			}
			else if (arr[i] >= 0)
			{
				// When element of [i] is not negative
				i++;
			}
			else
			{
				j--;
			}
		}
	}
};
int main()
{
	MyArray *task = new MyArray();
	// Array which are containing positive and negative values
	int arr[] = {
		1 , -1 , 3 , 2 , -7 , -5 , 11 , 6
	};
	int n = sizeof(arr) / sizeof(arr[0]);
	cout << "Before Arrange : " << endl;
	// Before move element
	task->display(arr, n);
	// Move negative elements
	task->moveNegative(arr, n);
	// After arrange
	cout << "After Arrange : " << endl;
	// After move element
	task->display(arr, n);
	return 0;
}

Output

Before Arrange :
  1  -1  3  2  -7  -5  11  6
After Arrange :
  1  6  3  2  11  -5  -7  -1