TheAlgorithms-C-Plus-Plus/Sorting/Shell Sort.cpp

#include <iostream>
using namespace std;

int main()
{
	int size = 10;
	int array[size];
	// Input
	cout << "\nHow many numbers do want to enter in unsorted array : ";
	cin >> size;
	cout << "\nEnter the numbers for unsorted array : ";
	for (int i = 0; i < size; i++)
	{
		cin >> array[i];
	}

	// Sorting
	for (int i = size / 2; i > 0; i = i / 2)
	{
		for (int j = i; j < size; j++)
		{
			for (int k = j - i; k >= 0; k = k - i)
			{
				if (array[k] < array[k + i])
				{
					break;
				}
				else
				{
					int temp = array[k + i];
					array[k + i] = array[k];
					array[k] = temp;
				}
			}
		}
	}

	// Output
	cout << "\nSorted array : ";
	for (int i = 0; i < size; ++i)
	{
		cout << array[i] << "\t";
	}
	return 0;
}