import java.text.NumberFormat;
import java.util.Scanner;

/**
 A simple driver that uses the Seq class to compute the
 nth element of the sequence.
 @author Isaac Shoebottom (3429069)
*/

public class TestSeq{

	public static void main(String[] args){
		
		int n, seqRec, seqMem, seqIter;
		
		Scanner scan = new Scanner(System.in);
		System.out.print("Enter a positive integer: ");
		n = scan.nextInt();
					
		seqRec = Seq.seqR(n);
		seqMem = Seq.seqM(n);
		seqIter = Seq.seqI(n);
		System.out.println("seqR(" + n + ") is: " + seqRec);
		System.out.println("seqM(" + n + ") is: " + seqMem);
		System.out.println("seqI(" + n + ") is: " + seqIter);

		NumberFormat form = NumberFormat.getInstance();
		form.setMaximumFractionDigits(7);
		form.setMinimumFractionDigits(7);
		System.out.println();
		System.out.println("Execution Times in Milliseconds (ms)");
		System.out.println("Seq(n) \tRecursive \tMemoization \tItertive");
		long start, end;
		int seqA;
		double time;
		for(int i = 20; i <= 40; i+=10){
			start = System.nanoTime();
			seqA = Seq.seqR(i);
			end = System.nanoTime();
			time = (double)(end-start)/1000000;
			System.out.print(i + "\t" + form.format(time));


			start = System.nanoTime();
			seqA = Seq.seqM(i);
			end = System.nanoTime();
			time = (double)(end-start)/1000000;
			System.out.print(i + "\t" + form.format(time));

			start = System.nanoTime();
			seqA = Seq.seqI(i);
			end = System.nanoTime();
			time = (double)(end-start)/1000000;
			System.out.print(i + "\t" + form.format(time));

			System.out.println();
		}
	}
}