Need help with a Java problem:

-----------------------------------------------------------------------------------------------------------------------------------------------------

Chord.java:

import java.util.Arrays;

import stdlib.StdAudio;

public class Chord { private double duration, frequencies[];

public Chord(double duration, double[] frequencies) { this.duration = duration; this.frequencies = frequencies; } public void play() { playChord(duration, frequencies); }

private void playChord(double duration, double[] frequencies) { final int sliceCount = (int) (StdAudio.SAMPLE_RATE * duration); final double[] slices = new double[sliceCount+1]; for (int i = 0; i

@Override public String toString() { return "[" + duration + ": " + Arrays.toString(frequencies) + "]"; }

}

TestFinalAnswer.java:

package finalanswer;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Random;

import stdlib.StdIn;

import stdlib.StdOut;

public class TestFinalAnswer {

public static > boolean isSorted(Item[] a) {

for (int i = 0; i

if (a[i].compareTo(a[i+1]) > 0) return false;

}

return true;

}

public static void main(String[] args) {

StdOut.println("*** " + FinalAnswer.yourName() + " ***");

StdOut.println();

Integer[] array = new Integer[12];

Random r = new Random();

for (int i = 0; i

array[i] = r.nextInt(1000);

}

StdOut.println("Array before sorting: " + Arrays.toString(array));

FinalAnswer.minpqSort(array);

StdOut.println("Array after sorting: " + Arrays.toString(array));

StdOut.println("Array is sorted: " + isSorted(array));

StdOut.println();

Queue queue = new Queue();

queue.enqueue("first");

queue.enqueue("second");

queue.enqueue("third");

queue.enqueue("fourth");

StdOut.println("Queue before reversing: " + queue);

FinalAnswer.reverseQueue(queue);

StdOut.println("Queue after reversing: " + queue);

StdOut.println();

double[] frequencies = {110.0, 110.0*1.224, 110.0*1.224*1.224};

ArrayList risingChords = FinalAnswer.createRisingChordList(0.2, frequencies, 10);

for (Chord risingChord: risingChords) {

StdOut.println("Playing: " + risingChord);

risingChord.play();

}

StdOut.println();

ArrayList ctaTrains = new ArrayList();

StdIn.fromFile("data/CTAdata.txt");

while (!StdIn.isEmpty()) {

int runNumber = StdIn.readInt();

String lineColor = StdIn.readString();

String nextStation = StdIn.readString();

String arrivalTime = StdIn.readString();

ctaTrains.add(new CTATrain(runNumber, lineColor, nextStation, arrivalTime));

}

StdOut.println("--- Trains before sorting ---");

for (CTATrain ctaTrain: ctaTrains) {

StdOut.println(ctaTrain);

}

StdOut.println();

ctaTrains.sort(null);

StdOut.println("--- Trains after sorting by run number ---");

for (CTATrain ctaTrain: ctaTrains) {

StdOut.println(ctaTrain);

}

StdOut.println();

ctaTrains.sort((CTATrain t1, CTATrain t2) -> (t1.getArrivalTime().compareTo(t2.getArrivalTime())));

StdOut.println("--- Trains after sorting by arrival time ---");

for (CTATrain ctaTrain: ctaTrains) {

StdOut.println(ctaTrain);

}

StdOut.println();

StdOut.println("=== " + FinalAnswer.yourName() + " ===");

}

}

Instructions 1. In Eclipse, create a package called finalanswer. Copy and place into the package the file TestFinalAnswer.java provided below. 3. Copy into the package the Chord class provided below 4. n the package, create a class called Final Answer. All of the static methods you are a to write will go in this class