Calculate The Factors Of A Positive Integer Number

Mar 16, 2014

lines 7, 8, &12 "primes" are underline in red (prime cannot be resolved) is what pops up when i hover over the x's.

i don't get why that is.

package assignment7;
public class Exercise3
{
public static void main(String[] args)
{
Prime.setSize(1000);
for (int p = Primes.next(); p < 30; p = Primes.next())

[Code]...

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Calculate Factors Of Positive Integer Number

Mar 17, 2014

Lines 7, 8, &12 "primes" are underline in red (prime cannot be resolved) is what pops up when i hover over the x's.

I don't get why that is.

Java Code :

public class Exercise3
{
public static void main(String[] args) {
Prime.setSize(1000);
for (int p = Primes.next(); p < 30; p = Primes.next()) {
int n = (int)Math.round(Math.pow(2,p)) - 1;
System.out.printf("%d 2^%d-1%d", p, p, n);
if (Primes.isPrime(n))

[Code] ....

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Program That Asks User For Integer And Prints Out All Its Factors In Increasing Order

Nov 18, 2014

Write a program that asks the user for an integer andthen prints out all its factors in increasing order. Use a class FactorGenerator with a constructor FactorGenerator(int numberToFactor) and methods nextFactor and hasMoreFactors. Supply a class FactorTester whose main methods reads a user input, constructs a FactorGenerator object and prints the factors.

Here is what I have so far for my main class and tester class

public class FactorGenerator
{
int factor;
int number;
int x;
FactorGenerator(int numberToFactor)
{
number = numberToFactor;
}

[Code]....

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Factors Of Number Up To 10

Apr 2, 2015

Finding Factors of Numbers up to 10, but ending with infinite loop

class Factors
{
public static void main(String arg[]) {
int i,j;
for(i=1;i<=10;i++){
System.out.println("Factors of " + i + " are: ");
for(j=1;j<=i;i++) {
if(i%j ==0) System.out.print(j+" ,");
}
}
}
}

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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.

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Read Positive Integer N And Plot 3 Triangles Of Size N

Oct 10, 2014

Write a Java program that reads positive integer n, 1 ≤ n ≤ 13, and plots 3 triangles of size n as shown below.

For n = 4, for instance, the program should plot: (works for n = 5 and n = 6 etc.)

triangle 1

1
2 3
4 5 6
7 8 9 10

triangle 2

_ _ _ 1
_ _ 3 2
_ 6 5 4
10 9 8 7

triangle 3

_ _ _ 1
_ _ 3 3 3
_ 5 5 5 5 5
7 7 7 7 7 7 7

import java.util.Scanner;
class Loops { 
void plotTriangle1(int n) {
int t = 1;
for (int i = 1; i <= n; i++) {
System.out.println(" ");
for (int j = 1; j <= i; j++) {
System.out.printf("%3d", t++);

[Code] ....

Currently compiles to this: Enter n(1-13):4
1
2 3
4 5 6
7 8 9 10

Format of the triangles, I couldn't get the spacing to work so I used underscores to replicate the blank space....

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Program That Accept Input Of Positive Integer And Sum All Digits

Jan 28, 2015

I am attempting to write a program that accepts input of a positive integer, reports each digit and then the sum of all digits. This is what I have so far:

*/
 package numbersum;
import java.util.*; 
public class Week4NumberSum {
static Scanner console = new Scanner(System.in); 
/**
* @param args the command line arguments

[Code]...

It works if I enter 1234567891 (10 digits)
Enter a positive integer: 1234567891
digit: 1
digit: 2
digit: 3
digit: 4
digit: 5
digit: 6
digit: 7
digit: 8
digit: 9
digit: 1

The sum of the digits is 46

But if I enter 11 digits, it fails:

Enter a positive integer: 123456789123 (12)
Exception in thread "main" java.util.InputMismatchException: For input string: "123456789123"
at java.util.Scanner.nextInt(Scanner.java:2123)
at java.util.Scanner.nextInt(Scanner.java:2076)
at week4numbersum.Week4NumberSum.main(Week4NumberSum. java:26)

java - Scanner error with nextInt() - Stack Overflow gives me some infor for InputMismatchException - which I find described as In order to deal with this exception you must verify that the input data of your application meet its specification. When this error is thrown, the format of the input data is incorrect and thus, you must fix it, in order for your application to proceed its execution.

I don't understand why the 10 digit integer is OK but the 11 or > digit integer is a mismatch.

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Input Validation - Where Condition Is A Word From Set And Value Is A Positive Integer

Mar 18, 2015

I am trying to create a program that first asks the user for an input in the form: condition = value, where condition is a word from the set {limit, deficient, abundant, perfect, prime}, and value is a positive integer. Then it verifies the input. If the input is invalid it prints a message indicating that and terminates. If the input is valid it prints a table with the number of abundant, deficient, perfect and prime numbers less than or equal to N, where N = 1, 2, 3, ..., limit.

My problem is with the input validation. i want it to read the value as a string and verify if it's integer.

Here is my code

import java.util.Scanner;
 public class Factors
{
public static void main (String[] args)
{
Scanner scan = new Scanner(System.in);
int n, f, fsum, p=0, a=0, d=0,pe=0,limit=0,abundant=0, deficient=0;
System.out.print("Enter stoping condition (condition = value): ");
String cond = scan.next();

[Code] ....

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Write A Java Program That Reads A Positive / Non-zero Integer As Input

Aug 1, 2011

Write a Java program that reads a positive, non-zero integer as input and checks if the integer is deficient, perfect, or abundant.

A positive, non-zero integer, N, is said to be perfect if the sum of its positive proper divisors (i.e., the positive integers, other than N itself, that divide N exactly) is equal to the number itself. If this sum is less than N, the number is said to be deficient. If the sum is greater than N, the number is said to be abundant.For example, the number 6 is perfect, since 6 = 1 + 2 + 3, the number 8 is deficient, since 8 > 1 + 2 + 4, while the number 12 is abundant, since 12 < 1 + 2 + 3 + 4 + 6.

SAMPLE OUTPUT:

1.)Input N: 5

5 is deficient.

2.)Input N: 6

6 is perfect.

3.)Input N: 18

18 is abundant.

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Nov 20, 2014

I am 4 weeks into my Intro to Java course and I am having a bit of trouble with my code. I need to make a program that will take a user inputted number, space the numbers out, then add them to a total sum. What I am having a hard time with is when I enter a negative number. I can't figure out what I need to do to have my program ignore the "-" in the string.

import java.util.*;
public class Week4_Programming_Problem
{
static Scanner console = new Scanner(System.in);
public static void main(String[] args) {
int number, digit, sum=0;
char digitPos;

[code]....

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Make Distance In Positive Number

Aug 22, 2014

I've been programming for years in a basic programming language, so doing something a bit more advance like this is quite challenging but I love it. where I've gone wrong here? I've been following a tutorial but I've decided to take what I've learned and make my own program but something seems to be wrong.

class Function{
public double abs(int num)
{
if (num > -1)
{
return num;
}
else
{
return -num;

[code]...

Basically trying to get the distance between to numbers but in a positive not negative number.

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Apr 30, 2015

I am trying to make a method that generated a random number between two values that can be negative or positive.

So:

rand(-0.2, 0.2);

would give one of these: -0.2, -0.1, 0, 0.1, 0.2

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Aug 3, 2014

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public static int sum(int n)
{
int total = 0;
for (int i = 1; i <=n; i++)
total += i;
return total;
}

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Feb 20, 2014

In a forest, there are some bamboo trees .The length of each tree get doubled during winter and increases by one unit in summer , write a Java program to calculate the total length of n number of bamboo trees in M number of seasons. The season always starts with winter.

import java.util.Scanner;
public class Tree {
public static void main(String args[]) {
int length;
int season;

[Code] ....

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Jun 19, 2014

You are to write a parallel program that will receive a large array of unsorted integers containing digits from 0 to 99. The program will have to calculate the SUM and AVERAGE of ODD number digits between 25 and 75 (inclusive).

The user may specify the size or the array and the total processor that the machine has. The size of the array must be divisible by number of processor. Based on the given size, the computer will generate random integer numbers automatically to populate the array.

The program should display the status of the calculation for each processor. The result should be displayed after all calculations are completed.Error messages should be displayed appropriately

a) Write a sequential (non-parallel) program that will accomplish above task.
b) Write a concurrent (parallel) program that will produce the result of the above task.

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Apr 29, 2014

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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?

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Jul 21, 2014

This is my program

public static void main(String args[]) {
Scanner in=new Scanner(System.in);
System.out.println("Enter the Total Number of Integers:");
int totalInteger=in.nextByte();
long largest=0;
for(int i=1;i<=totalInteger;i++) {
System.out.println("Enter Integer-"+i+":");

[code]...

I want to get Index of that particular number in which Value is largest.

What I need to change in my program?

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May 2, 2014

I'm trying to write a java code that calculates the varince of a set of number and I wanted to know if this is the proper way to do it.

for (int i = 0; i <= (myArray.length - 1); i++){
variance = Math.pow((myArray[i] - average), 2);

}

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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] ....

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Jan 4, 2015

This is supposed to get a certain number of items, and then calculate how much every item costs. It adds up the sum of those prices and checks if it is over 150$, if it is, it returns true, if it's not, it returns false.

import java.util.*;
class Cust
{
public static boolean DelPay (int a) {
Scanner reader=new Scanner (System.in);
int b,s=0;
for (int i=1;i<=a;i++) {
b=reader.nextInt();
s=s+b;
}
if (s>150)
return true;
return false;
}
}

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For example if:words = { "All", "Arab", "size", "Almond", "Allowed", "here"} and S= "All", then the method should return 2

PHP Code:

public class StringwithCount {
public static void main (String[]args) {
String strings[] = { "All", "Arab", "size", "Almond", "Allowed", "here"};
String output= "";
for ( int i  =  0;  i < words.length; i++) { 
            if (words[i].startsWith("s")) 
                c + +; 
        } 

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Jun 11, 2014

You are to write a parallel program that will receive a large array of unsorted integers containing digits from 0 to 99. The program will have to calculate the SUM and AVERAGE of ODD number digits between 25 and 75 (inclusive). The user may specify the size or the array and the total processor that the machine has. The size of the array must be divisible by number of processor. Based on the given size, the computer will generate random integer numbers automatically to populate the array.

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Jan 6, 2014

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import java.util.*;
public class Infomation{
public static void main(String args []) {
Scanner in = new Scanner(System.in);
System.out.print("Student Number:");
int sn=in.nextInt();

[Code] ....

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Apr 9, 2014

The instructions:

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1
2 3
4
5 6
7
8 9
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how to start this program.

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I have to write a program that inputs a 5 digit integer from the keyboard and prints if the input number is a palindrome or not. I got it to work, but when my result prints it says "0 is a palindrome" or "0 is not a palindrome". How can I get rid of the 0 and replace it with the number input by the user?

import java.util.Scanner;
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int digit;
int temp;

[code]....

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Apr 8, 2014

Basically i have a question ask me to write a program that read integer from keyboard until a negative number is entered, and then print out the max and min out of the number i have entered.

This is what i have done already which works, but i need to ignore the negative number when print out max and min...which i dont know how to do so. when i compile this program now it will always give me the negative number i enter at the end as minimum. which i need to ignore

Also if negative number is entered at once the program should print a error message say max and min are undefined.

public static void main(String[] args) {

Scanner in = new Scanner(System.in);
int large = Integer.MIN_VALUE;
int small = Integer.MAX_VALUE;
while(true) {
System.out.print("Enter a integer: ");
int n = in.nextInt();

[Code] ....

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