Determine If User Input Is Fibonacci Number Or Not

Oct 20, 2014

Part A: While Loop Program

Write a program that detects Fibonacci numbers. Prompt the user to input a positive integer. Upon input, the program will determine if the number is either a Fibonacci number or not. If a Fibonacci number, then the order of the number in the sequence must be output. If not a Fibonacci number, then the Fibonacci numbers above and below it (including their order in the sequence) must be output. Once it finishes, the program will prompt the user for a new number. The program will exit if the user enters a string (such as “quit”) instead of an integer. Use the sample output file, fib-seq-det.txt, to view a sample session

This is my project, I wrote a programs that tells you if the input number is a fibonacci number or not. For some reason it only works for some Fibonacci numbers but not all of them.

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);
System.out.print("Please input a number for analysis: ");
int input = in.nextInt();

[Code] ....

View Replies


ADVERTISEMENT

Calculate Nth Fibonacci Number And Returns That To User

May 1, 2014

I have to create a program that calculates the nth Fibonacci number and returns that to the user. Fibonacci said his number sequence would describe the ideal breeding patterns of immortal rabbits. So, you are going to make this vision a reality.

First, take in a numeric value from the user and calculate that value in the fibonacci series. Next, find an image of a rabbit and display the image on a GUI (put the image as an icon on a label!) the number of times returned by the algorithm (Put all the aforementioned labels on one panel with FlowLayout!).

You need to remove the old images from the Panel. Probably the easiest way to do this is to create a whole new panel and remove the old one (hint: the remove method of JPanel should come in handy)

You could use an array of JLabels
You will need to create a new JLabel and add each member of the array to the panel
I should be able to scroll to see any images that are off screen

I am having difficultly on to making the array list for JLabel, and getting the Fibonacci sequence to show the pictures of rabbits. Below is my current code.

import java.awt.FlowLayout;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Rabbit extends JFrame

[Code] ....

View Replies View Related

Simple For Loop - Determine Factorial Of A Number Entered By User

Jun 28, 2014

I'm trying to learn Java and my current project is to write a short program to determine the factorial of a number entered by the user. I haven't looked. There may be a method that will do it, but I want to use a for loop specifically.

What I have compiles just fine. I'm actually pretty thrilled just with that. Here is what I have:

class factorial {
public static void main( String[] args) {
Scanner scan = new Scanner(System.in );
int num;
int product = 1;

[Code] ....

View Replies View Related

Java GUI ActionListener - Determine Factors Of Input Placed At Number Text Field

Oct 12, 2014

I just started Java a few days ago and I'm having trouble with ActionListener..

Here are my codes so far , i'm having trouble with the

btnDetermineAction10686696_842067395825457_2521361553839739125_n.jpg:

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
 
public class NumberAnalyzer extends JFrame{
private JButton btnDetermine, btnClear;
private JTextField txtNumber, txtFactors, txtPrime;
private JLabel lblNumber, lblFactors, lblPrime;
private JPanel pnlNumber, pnlNumber1,

[Code] ....

The output should be the one in the picture:

Input is placed at the NUMBER text field.

Identify its factors, write it at FACTORS text field.

Determine if it is prime. If prime, output at PRIME text field is “Yes”, “No” otherwise.

View Replies View Related

Program That Takes User Odd Number And Print Prime Numbers Lower Than User Input

Nov 4, 2014

I have been struggling with this program for weeks. This program is supposed to take a user's inputted odd number and then print out all prime numbers lower than that number.

public class PrimeNumber
{
Scanner scan = new Scanner(System.in);
int userNum;
String neg;

public void getUserNum()

[code]...

View Replies View Related

Counting Number Of Words From User Input

Jan 2, 2015

I tried the following code, OK:

Java Code:

String temp = "hi this sf hello is new what is this";
String[] cmd = temp.split("s");
int num = cmd.length;
System.out.println("number of words are: "+num); mh_sh_highlight_all('java');

However, when i get the input from user , i didnt get the expected result:

Java Code:

System.out.println("Enter the input string to count the words: ");
String[] cmd = new Scanner(System.in).next().trim().split("s");
int num = cmd.length;
System.out.println("number of words are: "+num); mh_sh_highlight_all('java');

Now Result for above code:

Enter the string to count the words:

hi this is new

words are: 1

View Replies View Related

Determining User Input To Be Prime Number

Feb 12, 2015

Any better way to write a program that takes a user number input and the program determines whether or not the number is prime or not. It was suppose to be a number between 0 and 8,000,000.

import java.util.Scanner;
public class prime1
{
public static void main(String args [])

[Code].....

View Replies View Related

Add All Even Numbers Between 2 And User Input Number Which Is Included In Addition?

Apr 17, 2014

import java.util.*;
 public class SumOfAllEvens { 
public static void main (String[] args) { 
Scanner s = new Scanner (System.in);
 //for (int i=1; i<4; i++){
int usernumber;

[code]....

I'm supposed to use a for loop that runs until it reaches the number input by the user, but I'm not sure how to tell the program to add the user's number along with all of the even numbers in between the user input and 2.

View Replies View Related

Checking If User Input Matches Any Number In Same Column

Feb 14, 2014

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package firstgui;
import javax.swing.*;
import java.awt.event.*;
public class TicTacToe {

[Code] ......

Program is 10x10 board, I need to check if the user's input is a duplicate of any number in that same column, but I can't figure it out. When I tried it, it always check the same box. For example, if I entered 4 in [1][1] (going by 10x10 grid), it automatically checks right after I entered that [1][1] is the same as my input and erases it. My professor wants me to check it with the "CheckWinner" method.

I tried the following when someone told me to pass the reference of the JButton being clicked to ignore it.

private boolean CheckWinner(JButton source, String inplayer) {
//...
if (EventBoard[i][j] != source &&
EventBoard[i][j].getText().equals( inplayer )){
JOptionPane.showMessageDialog(null, "copy");
EventBoard[i][j].setText("");
}

View Replies View Related

Allowing User To Input A Number And Assign This To Int Variable

Jul 4, 2014

I need the user to be able to input a number, and for the program to assign this value to an 'int' variable. I know how to do this with a 'string' variable:

Java Code:

String options = JOptionPane.showInputDialog(null, "In your decision, how many options do you have?
" +" (NOTE: The maximum number of options = 5, and you must enter your answer as a numeral.)"); mh_sh_highlight_all('java');

But I need to know how to do this with an 'int' variable.

View Replies View Related

Rainfall Analysis For The Number Of Days According To User Input

Feb 24, 2015

I am assigned with a project that will as the user for the amount of days they would like data entered, then loop asking them for these numbers. once it reaches the entered amount of days it will display a menu for which the user can enter the number they want on the list and it will display the data. the menu has 6 items. Total, Average, Determine if its a Drought, Flood or normal rainfall, highest of data entered, lowest of data entered, and 6 is to quit the program.

So far i have total and average working properly. Still looking at how to display drought, flood, and normal.

Main problems, i cannot get highest and lowest to display correct data.

Also when entering 6, or an invalid menu choice, neither "goodbye" or "invalid choice, choose again" gets printed. Rather the loop for entering data continues.

import java.util.Scanner;
public class RainAnalysis {
/*
* Project 1 This program will analyze the rainfall for the number of days a user inputs.
*/
 
public static void main(String[] args) {
Scanner keyboard = new Scanner(System.in);
int numOfDays = 0;
double rainfallAmount = 0.0;

[Code] ....

Here is a sample output to show what happens when i put in 6 after the menu is displayed.

also i noticed that it does not say the correct day when displaying the lowest and highest rainfall. this is because i put count, i did not know what else to put in order to get the correct day.

how many days do you want to monitor rainfall?5

Enter the rainfall for day 1.01
Enter the rainfall for day 2.1
Enter the rainfall for day 36
Enter the rainfall for day 43
Enter the rainfall for day 51

Rainfall Data Display Menu:
1 - Display total rainfall.
2 - Display rain average for the period.
3 - Display if drought, flood, or normal conditions.
4 - Display the day and amount of the highest rainfall.
5 - Display the day and amount of the lowest rainfall.
6 - Quit the program.

Enter your choice:
4
Day5 has the highest rainfall with 6.0 inches.

Rainfall Data Display Menu:
1 - Display total rainfall.
2 - Display rain average for the period.
3 - Display if drought, flood, or normal conditions.
4 - Display the day and amount of the highest rainfall.
5 - Display the day and amount of the lowest rainfall.
6 - Quit the program.

Enter your choice:
5
Day5 has the lowest rainfall with 0.1 inches.

Rainfall Data Display Menu:
1 - Display total rainfall.
2 - Display rain average for the period.
3 - Display if drought, flood, or normal conditions.
4 - Display the day and amount of the highest rainfall.
5 - Display the day and amount of the lowest rainfall.
6 - Quit the program.

Enter your choice:
6
Enter the rainfall for day 6

View Replies View Related

Take User Input And Display Sum Of Digits Of Entered Number

Nov 6, 2014

I have returned with yet another problem but I think this one might be a bit easier to fix.

So the whole MO of this program is to take user input, and display the sum of the digits of the number they entered. I am supposed to do this by utilizing methods. So far this is what I have and when I compile it tells me that it "cannot find symbol", which I don't understand as I define what "m" is in the for loop. The other error is that it says:

"Exercise6_2.java:22: error: incompatible types: possible lossy conversion from long to int
return result;
^

I don't understand why it's giving me this error nor do I understand why result seems to inherently be an int. (Also the public static int sumDigits(long n) method was given to me by the book so that is what I am supposed to use).

import java.util.Scanner;
public class Exercise6_2 {
public static void main(String[] args) { 
Scanner input = new Scanner(System.in);
System.out.println("Enter a integer");
long n = input.nextLong();

[Code]...

View Replies View Related

Count Number Of 7s (User Input) - Illegal Start Of Expression

Oct 15, 2014

I'm attempting to create a program that employs a method to count the number of 7s a user puts as an input into the program. I'm just getting started, but I'm getting an error when I try to implement a main method that says "Illegal start of expression"

What adjustments could I make to eliminate this error message?

// Add a main method here.
public static void main(String[] args) {
//Error occurs here
public static int countSevens(int n) {
// 0. Clean-up. Get rid of any minus signs as that is not a digit.
n = Math.abs(n);

[Code] .....

View Replies View Related

JOption Pane - Output Number With Greatest Value From User Input

Nov 7, 2014

Using JOptionPane,ask for 10 numbers from the user.Use an array to store the values of these 10 numbers.Output on the screen the number with the greatest value.

View Replies View Related

Write A Code That Allows A User To Input Number Of Stones In A Basket

Nov 20, 2014

I am trying to write a code that allows a user to input the number of stones in a basket, then put the stones in my pocket, after the stones are in my pocket, the stones must be taken out, one by one, and thrown in a pond. I get stuck at this part because my for statement has to subtract the number of stones in my pocket (one at a time) and add a stone to the pond (one by one) at the same time.I can get the pond stones to increase until the max amount of stones with the following:

for (int i = 0; i < stones; i++) {

System.out.println("Pocket:" ? " " + "Pond:" + i);

how to reduce one and add to other. Is it possible to do this in one for statement? I tried to put stones-- in place of the question mark, but that is not working.

View Replies View Related

Prompt User To Input Integer And Then Output Both Digits Of Number And Their Sum

Jun 7, 2015

Write a program that prompts the user to input an integer and then outputs both the individual digits of the number and the sum of the digits. 
 
Now I have a code for spacing out the integers, and I have a separate code for adding the digits. But I am not sure how to merge them together. Both of them work independently
 
Spacing code:
import java.util.*;
public class SumoftheIntegers
{
static Scanner console=new Scanner(System.in);
public static void main(String []args) {
int num1, test, rem;
int counter = 0;

[Code]...

Now the sum of the integers code:
 
import java.util.Scanner;
public class sum
{
    public static void main(String[] args)
    {
        // Create a Scanner
        Scanner input = new Scanner(System.in);
// Enter amount
        System.out.print("Enter an integer: ");
        int integer = input.nextInt();

[Code]...

View Replies View Related

Averaging Grades Program - Take Input From User Until They Enter Negative Number

Feb 2, 2015

Ok so I have my program working for the most part. In this program I am supposed to take input from the user until they enter a negative number and that works, the problem is that it doesn't work if I enter a negative number on the first prompt. For example if I enter a 100 it would prompt me again and if I enter a negative number it would quit and give me the average, but if I enter a negative number the first time I am prompted the program just gives me an error. How do I fix that?

import java.util.List;
import java.util.ArrayList;
import java.util.Scanner;
public class Application {
public static void main(String [] args){
Scanner input = new Scanner(System.in);
List<Integer> grades;

[Code] ....

View Replies View Related

Guess Number Game - Reveals Answer If User Input Is Wrong

Sep 1, 2014

The problem occurs after the user inputs the guess.... it either runs the for loop if guess = numtoguess and reveals the answer even if the user input is wrong.... or it always runs the first if statement in the while loop if guess!= to numtoguess... heres the code

public static void main(String[] args) {
String[] Answers = {"yes", "Yes", "No", "no"};
String Name = JOptionPane.showInputDialog(null, "Hello, What is your name?","Random Game", JOptionPane.QUESTION_MESSAGE);
String UI = JOptionPane.showInputDialog(null, Name + " do you want to play a game", "Random Game", JOptionPane.QUESTION_MESSAGE);

[Code] ....

View Replies View Related

Prompt User For Input Number And Check If It Is Greater Than Zero - Java Multiplication

Apr 13, 2014

Write a program that prompts the user for an input number and checks to see if that input number is greater than zero. If the input number is greater than 0, the program does a multiplication of all the numbers up to the input number starting with the input number. For example if the user inputs the number 9, then the program displays the following sum:

9 * 8 * 7 * 6 * 5 * 4 * 3 * 2 * 1 = 362880

That's the question I'm getting and so far all I've got is

import java.util.Scanner;
public class Lab4Q3
{
public static void main (String[] args)
{
int keyboard;

[Code] .....

View Replies View Related

User Input Data As String And If Verified As Valid Number Then Convert Into Double

Nov 11, 2014

I am writing a code in which a user inputs data as a string and that data must be verified as a valid number. A valid number is anything from 0-100. Then all valid numbers are converted into double numbers.

I am having trouble in how to write the validation part of the code.

Is it suppose to be an if, else statement? And if so how is it suppose to be validated?

View Replies View Related

Program That Calculates Fibonacci Number

Nov 19, 2014

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();

[code]...

View Replies View Related

Finding Nth Number In Fibonacci Sequence

Oct 30, 2014

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);

[Code] .....

View Replies View Related

Fibonacci Number - Recursive Function

Jul 8, 2014

I wrote this tail recursive function that mirrors the iterative version, except that the loop in the iterative version is replaced by an if statement here and then a recursive call. Is this truly recursive? I have seen the fibo(n-1) + fibo(n - 2) version, but is this also an acceptable recursive solution? Why is it never solved this way?

public class FiboRecursive {
public static int fibo (int n) {
int sum = 0;
int n1 = 1;
int n2 = 1;
if (n == 1 || n == 2) {
sum = 1;

[Code] ...

View Replies View Related

Fibonacci Sequence - Calculate Nth Number

Apr 29, 2014

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?

View Replies View Related

Java Program That Randomly Generates Five-digit Lottery Number And Prompts User For Input

Sep 25, 2014

Write a Java program that randomly generates a five-digit lottery number and prompts the user to enter a five-digit number. Each digit in the number is in the range between 0~9. The program should determine which prize the user wins according to the following rule:

• The user wins the first prize if the user input matches all five digits in the lottery number in exact order.
• The user wins the second prize if the user input matches any four digits in the lottery number in exact positions.
• The user wins the third prize if the user input matches any three digits in the lottery number in its exact position.
• The user wins the fourth prize if the user input matches any two digits in the lottery number in its exact position.
• The user wins the fifth prize if the user input matches any one digit in the lottery number in its exact position.

and here is my code. I cant get it to print the right statements.

import java.util.Scanner;
import java.util.Random;
class Hw5 {
static int getPrize(int g1, int g2, int g3, int g4, int g5,
int u1, int u2, int u3, int u4, int u5) {
//code for determining the prize comparing (g1, g2, g3, g4, g5) to (u1, u2, u3, u4, u5)
if (u1 == g1 && u2 == g2 && u3 == g3 && u4 == g4 && u5 == g5)

[code]....

View Replies View Related

Print Fibonacci Series Till User Wants It

Jun 12, 2014

I wrote java program to print fibonacci series till user wants it! But I'm getting this compilation error -

fibo.java:Incompatible types
found:java,lang.String
required:int
n=s.readline();

import java.awt.*;
import java.io.*;
import java.util.*;
class fibo {
public static void main(String args[])throws IOException {
int arr[]=new int[100];

[Code] ......

View Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved