Median

This algorithm computes the median of the given set of numbers.

• C#
• VB.Net
• C
• C++
• PHP

									void Sort(double* data, int count) {
	int min;

	for (int i = 0; i < count - 1; ++i)
	{
		min = i;

		for (int j = i + 1; j < count; ++j)
		{
			if (data[j] < data[min])
			{
				min = j;
			}
		}

		double temp = data[min];
		data[min] = data[i];
		data[i] = temp;
	}
}

double Median(double data[], int dataSize) {
	Sort(data, dataSize);

	if (dataSize % 2 == 0)
		return (data[dataSize / 2 - 1] + data[dataSize / 2]) / 2;
	else
		return data[dataSize / 2];
}
								

Example

									double data[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 };
double median = Median(data, 10);
								

Output

									5.5000000000000000