59 lines
1.6 KiB
Java
59 lines
1.6 KiB
Java
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import java.text.NumberFormat;
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import java.util.Scanner;
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/**
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A simple driver that uses the Seq class to compute the
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nth element of the sequence.
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@author Isaac Shoebottom (3429069)
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*/
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public class TestSeq{
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public static void main(String[] args){
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int n, seqRec, seqMem, seqIter;
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Scanner scan = new Scanner(System.in);
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System.out.print("Enter a positive integer: ");
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n = scan.nextInt();
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seqRec = Seq.seqR(n);
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seqMem = Seq.seqM(n);
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seqIter = Seq.seqI(n);
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System.out.println("seqR(" + n + ") is: " + seqRec);
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System.out.println("seqM(" + n + ") is: " + seqMem);
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System.out.println("seqI(" + n + ") is: " + seqIter);
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NumberFormat form = NumberFormat.getInstance();
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form.setMaximumFractionDigits(7);
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form.setMinimumFractionDigits(7);
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System.out.println();
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System.out.println("Execution Times in Milliseconds (ms)");
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System.out.println("Seq(n) \tRecursive \tMemoization \tItertive");
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long start, end;
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int seqA;
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double time;
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for(int i = 20; i <= 40; i+=10){
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start = System.nanoTime();
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seqA = Seq.seqR(i);
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end = System.nanoTime();
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time = (double)(end-start)/1000000;
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System.out.print(i + "\t" + form.format(time));
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start = System.nanoTime();
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seqA = Seq.seqM(i);
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end = System.nanoTime();
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time = (double)(end-start)/1000000;
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System.out.print(i + "\t" + form.format(time));
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start = System.nanoTime();
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seqA = Seq.seqI(i);
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end = System.nanoTime();
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time = (double)(end-start)/1000000;
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System.out.print(i + "\t" + form.format(time));
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System.out.println();
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}
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}
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}
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