/* DoubleArrayOps.java defines common operations for double[].
 *
 * Begun by: Charles Hoot for Hands on Java.
 * Adapted from code by: Adams, Fall 1995, Hands on C++.
 * Completed by:
 * Date:
 ********************************************************************/

import ann.easyio.*;

public class DoubleArrayOps
{

	/*******************************************************
	 * subArray returns a sub sequence from an array       *
	 *                                                     *
	 * Receive: data, an array of doubles,                 *
	 *          start, an integer, and                     *
	 *          stop, an integer.                          *
	 * Preconditions: stop >= start                        *
	 *                start >= 0                           *
	 *                stop < data.length                   *
	 * Output: a sub sequence of the original array.       *
	 *******************************************************/
	public static double[] subArray(double data[], int start, int stop) 
	{
		double newData[] = new double[stop-start+1];
		
		int storeAt = 0;
		for (int i = start; i<= stop; i++)
			newData[storeAt++] = data[i];
			
		return newData;
	}
	
	
	// A basic print operation for an array
	public static void printArray(Screen out, double data[]) 
	{
		for (int i = 0; i< data.length; i++)
			out.print(data[i] + " ");
	}
	
	// replace this line with a definition of average()


	// replace this line with a definition of standardDev()


}