//keep sales figures in an array, provid methods for getting total, average, highest and lowest amounts of sales


public class eg06SalesData
{
	private double[] sales; //sales data field

	//constructor method, copies elements in an array to the sales array
	public eg06SalesData(double[] s)
	{
		sales = new double[s.length];
		
		for (int index = 0; index < s.length; index++) {
			sales[index] = s[index];
		}
	
	}
	
	public double getTotal()
	{
		double total = 0.0;
		
		for (int index = 0; index < sales.length; index++) {
			total = total + sales[index];
		}
		
		return total; 
	}
	
	public double getAverage()
	{
		return getTotal() / sales.length;
	}
	
	public double getHighest()
	{
		double highest = sales[0];
		
		for (int index = 1; index < sales.length; index++) {
			if (sales[index] > highest)
			{
				highest = sales[index];
			}
		}
		
		return highest; 
	}
	
	public double getLowest()
	{
		double lowest = sales[0];
		
		for (int index = 1; index < sales.length; index++) {
			if (sales[index] < lowest)
			{
				lowest = sales[index];
			}
		}
		
		return lowest; 
	}
	
}