/** Code for doing timing
 * @author gtowell
 * Created: Oct 1, 2020
 */
public class Timer {
    private static final double NANOS_SEC = 1000000000.0; // nanosec per sec

    public static void main(String[] args) {
        int len = Integer.parseInt(args[0]);
        long[] data = new long[len];
        for (int i=0; i<len; i++)
        data[i]=i;
        long startTime = System.nanoTime(); // yes, timing in nanoseconds
        new Timer().doWork(data);
        long endTime = System.nanoTime();
        // now covert nanoseconds to seconds
        System.out.println("Time: " + (endTime-startTime)/NANOS_SEC); 
    }
    /** Accumulates info, it can be handly to have this as a instance variable */
    private double res=0;
    /**
     * Do something.  This implementation actually does nothing.
     * @param data data to do something with.
     */
    public void doWork(long[] data) {
        System.out.println(res);
    }
}