I'm facing a Problem with the JUnit Test for a Fibonacci rabbits sequence. The JUnit Test should test if the function dynFib(int x) completes the calucation in time. The time given is 100ms. The sequence I wanted to be printed is 0 1 1 2 3 4 6 8 11 15 and I got it but the calculation takes more than 100ms. How can I make it calculate faster without using a loop?
I want to do it recursively and dynamically, I kept trying lots of methods but they did not work.
This is my Code:
public class TestFib {
private static int dynFib(int x, Integer[] array) {
array = new Integer[x + 1];
if (x < 0) {
throw new IllegalArgumentException();
public class Fibonacci { public static void main(String[] args) { int[] numbers; numbers = new int[20]; numbers[0] = 0; numbers[1] = 1; System.out.println("
[Code] ....
I wrote this program for my Java class to print out the first 20 numbers of the Fibonacci series. My assignment then tells me to Rewrite your program using dynamic array. I'm not sure how to do this.
public class FibSeqByIanNeumann { public static void main(String[] args) { Scanner get = new Scanner(System.in); int ctr, num1, num2, fib, maxTimes; System.out.print("How many sequences do you want?: "); maxTimes = get.nextInt(); //inputs the maxium limit of the fib sequence
[code]....
how to do a simple YES/NO Loop so I can try to have it work on my code if I want to try to do the Fibonacci Sequence again.Now I think it might have something to do with a do/while loop.
I am attempting a programming exercise to display the values in the Fibonacci sequence from F0 to F15. I understand the concept, but, for some reason my equation is simply creating a resulting string of numbers that simply increase by 2's. As, I know it is supposed to be the sum of the previous F and the F that precedes that one to total the new F number. It seems so simple yet I seem to be far off. As usual, I have worked my code for your review.
/* * This program calculates the "Fibonacci sequence." * A "sentinel" is used to limit the extent the calculation. */
import acm.program.*; public class bookFibonacciTest2a extends ConsoleProgram { /* Specifies the limit value of the calculations */ private static final int SENTINEL = 16; public void run() { println ("This program display Fibonacci sequence numbers 0 - 15.");
I have to find where in the fibonacci sequence a at number belongs, using a if or while loop.
Example
>55 is a Fibonacci number whose order in the sequence is 11 >35 is not a Fibonacci number. However, it lies between Fibonacci numbers 34 (order: 10) and 55 (order: 11)
import java.util.Scanner; public class While { public static void main(String[] args) { System.out.println("Welcome to the Fibonacci Sequence Detector"); Scanner in = new Scanner(System.in);
Write a recursive method that calculates the Nth number in the Fibonacci sequence. The first and second numbers in the sequence (the base cases) are both 1. After that, each subsequent number is the sum of the previous two. Stated a bit more formally:
fib(n)={1fib(n−1)+fib(n−2)n<2otherwise
For example, here is the first few numbers in the sequence:
1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...
Your fib method should be part of a class named Fibonacci. In addition to the fib method, the Fibonacci class should have a main method that calls fib(9). If the result doesn't equal 34, you should print an error message. Otherwise, it should print out a message saying that it was successful.
After writing your Fibonacci class, answer the following question: How many times is the fibonacci method called when calculating the 5th number in the sequence?
I am working on a class project and I have to write the JUnit test for the GUI class ... what I did wrong ... Here is the code for the GUILauncher:
package edu.oakland.production; import java.awt.*; import javax.swing.*; public class GUILauncher{ public static void main(String[] args){ RetrieveWindow gui = new RetrieveWindow();
I have to find where in the fibonacci sequence a at number belongs, using a while loop.
Example
>55 is a Fibonacci number whose order in the sequence is 11 >35 is not a Fibonacci number. However, it lies between Fibonacci numbers 34 (order: 10) and 55 (order: 11)
import java.util.Scanner; public class While { public static void main(String[] args) { System.out.println("Welcome to the Fibonacci Sequence Detector");
Modify the Improved Fibonacci application to store its sequence in an array. Do this by creating a new class to hold both the value and a boolean value that says whether the value is even, and then having an array of object references to objects of that class.
Did I just need to declaring the variable in other class (for boolean value and the value itself) or else ?
Here is the code for ImprovedFibonacci.java
Java Code:
class ImprovedFibonacci { static final int MAX_INDEX = 9; /** * Print out the first few Fibonacci numbers, * marking evens with a '*' */ public static void main(String[] args) { int lo = 1; int hi = 1; String mark;
I have JUnit exposure only in writing simple programs. Here I have one of the usecases requirement pupose I am generating data file(s) by Java programming and calling this data by Hashmap. My file containing two columns
(1) TimeStamp (2) Speed.
The file is tab formatted file. The business requirement is to check wether the first column should not be 00000000000000 or NULL or BLANK. My question is, how do I check the first field in a file contaning valid information in Junit test case?
I have wrote this class who read from text line by line and save the words in fileOnTable.. Now i don't know what to read in ReadOffer to save the words in object offers and return this.. One more question.. What JUnit test can write for this code..?
I have been designing a music collection application that runs from a database. I now need to develop a junit test to test the application but I am not sure if Junit has anything to work with testing databases. I have been googling on the internet but most of the search results do not really give any good examples that I can easily follow and adapt to my application. I am using only one table and I would like to test INSERT, UPDATE and DELETE actions and I would also like to test a successful connection.
I once found one tutorial which I cannot find any more that had something that retrieves all the data in the database and stores it in a CSV file and the loops through the CSV file to check or update information.
How do you test the events within an inner class using JUnit
// File: : events/SomePanel.java // Purpose: Show use of named inner class listener.
import javax.swing.*; import java.awt.event.*; class SomePanel extends JPanel { private JButton myGreetingButton = new JButton("Hello"); private JTextField myGreetingField = new JTextField(20);
[Code] .....
Code extract taken from: Java: Inner-class Listeners
Taking the above example, do I need to use myGreetingButton.doClick to trigger this event to test the respective variables/values being used ? Also the Actionlistener inner classes is private so doubt I can access this from JUnit Test class.
I am making some Junit Tests that process some files with a parser and the do some other processes. I already have a loop for processing a whole folder at a time. But I want to know how can I do so that for each file it processes I can generate an individual report.
i want to use cucumber in java through code. previously i have used it with Junit. but now i need to implement it through coding for the purpose of automating.
Can EJB be developed with a Test Driven Development approach? Is that possible with Junit or should it require other tools/frameworks?I am also interested in understanding which mocks should I consider and which part of the IJB code must instead be tested?
First I was using this way how to get connection and all was fine.
con = DriverManager.getConnection("jdbc:derby:memory:datab;create=true");
But now I have to change it to DataSource and how I find out derby had class ClientDataSource for this but for the hell I can't find out how to setup that virtual DB.
ClientDataSource ds = new ClientDataSource(); con = ds.getConnection();
I get an error "ArrayIndexOutOfBounds" in my Junit test on the following method:
public String[] getMACs(String ssid) { int first = bs.searchFirst(arrayWlanMac, new GetSet(null, ssid, 0, 0), new ComparatorSSID()); int last = bs.searchLast(arrayWlanSsid, new GetSet(null, ssid, 0, 0),
[Code] ....
The error occurs in the first while loop right in the if condition (if (!arrayWlanSsid[i + 1].getMac().equalsIgnoreCase(arrayWlanSsid[i].getMac())) )
I need to write a For Loop that prints out the first 12 Fibonacci numbers:1 1 2 3 5 8 13 21 34 55 89 144.The problem I am having is that I can not get the first two 1 numbers. I only get 1.2.3.5.8.....
int a=1; int b=1; for (int i=1; i<12;i++) { System.out.print(a+" "); a=a+b; b=a-b; }
Do I need to add another For Loop that sub-tracks so that I can get the first digit of 1?
public class E09_Fibonacci { static int fib(int n) { if (n <= 2) return 1; return fib(n-1) + fib(n-2); } public static void main(String[] args) { // Get the max value from the command line: int n = Integer.parseInt(args[0]); if(n < 0) { System.out.println("Cannot use negative numbers"); return; } for(int i = 1; i <= n; i++) System.out.print(fib(i) + ", "); } }
please break down fib method shown above. I can't understand how the magic is happening inside that recursion.
Its a program that calculates Fibonacci number.This program uses recursion.
import java.util.Scanner; public class FibonacciMemoization{ static int[] fib = new int[60]; public static void main(String[] args){ Scanner input = new Scanner(System.in); System.out.print("Enter a Number :"); int number = input.nextInt();
