Generating Series Of Numbers - How To Get A Zero To Appear
Jun 8, 2014
My project is writing a program that generates a series of numbers to appear like a social security number (XXX-XX-XXXX). My code runs.. But any number below 10 it just shows one number (XXX-X-XXXX). What do I need to enter in to my code so that if the number is <10 it will show (00,01,02,03....)?
Java Code:
import java.util.Random;
public class IDnumber
{
public static void main (String[] args) {
Random generator = new Random()
int num1 = (generator.nextInt(7) + 1) * 100 + (generator.nextInt(8) * 10) + generator.nextInt(8);
int num2 = generator.nextInt(74);
int num3 = generator.nextInt(10000);
String IDnumber = num1 + "-" + num2 + "-" + num3;
System.out.println(IDnumber);
}
} mh_sh_highlight_all('java');
write a java program to check divisibility of a series of numbers that a user inputs the starting and ending numbers and also the number to check divisibility with.
The problem I am having is it only checks the first number and doesn't check the rest.
import java.util.Scanner; public class MyMidTermAssignment { public static void main(String[] args) { int numberInputBeginning,numberInputEnding,divisibleByNumber; System.out.println("Enter first number of series");
So basically, I've been trying to create a for loop that asks the user for a number between 1 and 30, then calculates the total of the series of numbers. For example, if 15 is entered, the calculation should be 1/15+2/14+3/13+...15/1 which would equal approximately 38.1. The problem I'm having is that the code doesn't loop whenever I type a number for some reason, which results in a very incorrect calculation. Here is my code so far:
import java.util.Scanner; public class HmwLoop { public static void main(String[] args) { double sum = 0; for (double num1 = 1, num2 = 30; num1 <= 30 && num2 >= 1; num1++, num2--)
I've been trying to find the easiest way to write to generate a number which is between intervals of a arbitrary min and a max value.I've been searching for this but I don't find this particular thing.I've found that this combination works:
I am working on a bingo project and created random numbers between 1 and 75 to generate. I have it set up that it shows the number in a text box and changes the color on the board if the number is called. When I test the program, some numbers are highlighted in addition to the number called. I believe this is because extra numbers are being chosen, but not being noted in the text box. Below is my code for the unique random numbers.
int CallNo; String CallerTxt = new String(); public void CallNum() { Random RandCall = new Random(); //Generate Caller Random Number CallNo = RandCall.nextInt(75)+1;
I have to get the user to enter in 10 numbers and with those 10 numbers I have to find the total, average, smallest, largest numbers in the set the user inputs. I have the total and average already figured out but how would you go about trying to find the largest and smallest numbers within this set of code.
import java.util.*; public class testhw7 { public static void main (String [] args) { Scannernumberin = new Scanner (System.in); doublevalue[]; doubletotal;
So I have a program for a project that permutes a random series of numbers using Java's Rand function. Basically I use a seed and a number of items I want in the arrangement of numbers, and the program makes a permutation with no two numbers being repeated. Only arrays can be applied to it, so I've been hard at work finding a solution.
Here's the code so far:
public static int permutation[]; public static void permute(int numOfItems, int seed){ permutation=new int[numItems]; Random rand = new Random(seed); permutation[0]=rand.nextInt(numItems-1);
[Code] ......
So basically I'm wanting the program to make a randomized list of numbers from the number of items I pass to the Permute method with no duplicates. I'm having some level of success with what I have written, as it gives me a randomized list when printing the output, but for some reason the first for statement in code never terminates fully, but instead runs indefinitely when generating the last integer.
For example, if I want to put 10 with a seed of 0 into it and make a list from 0-9, it will print 74283510, which is only 8 different integers. permutation[0] is manually set at the beginning of the method, which accounts for one more, but that's still only a list of 9, so I'm just wondering why the last integer is not being generated and why the program keeps looping and not terminating? I'm know for sure it's something I'm overlooking.
I'm just not noticing why it won't display the answer. I'm trying to solve this book problem......
"Write a for loop that calculates the total of the follower series of numbers:
1/30 + 2/29 + 3/28......+30/1"
Here is what I have..
public static void main(String[] args) { double total = 0; for (double a = 1, b = 30; b < 1; a++, b--) { total += (a / b); } System.out.println(total); } }
When launched, the output is 0.0. I tried changing the variables a and b to doubles but didn't change anything...
Write a program called ComputePi to compute the value of pi using the following series expansion. you have to decide on the termination criterion used in the computation(such as number of terms used or the magnitude of an additional term). Is this series suitable for compute pi?
Is it a good idea to use the date and time with the first or last few values of the session ID. Or should I just use the complete session ID value for my "unique id"?
I have a problem in generating reports using java code. I created a report using iReport 5.5.0 with MySql Database connection. In iReports, it shows the correct output while previewing it. Then i copied my .jrxml file and pasted it into my netbeans project folder(..sample/web/WEB-INF/sample.jrxml) and then i added the required jar files in my project's library folder. i am generating the report in netbeans using jsp and servlet. THE REPORT IS GENERATING AND SAVED SUCCESSFULLY IN MY DESKTOP. BUT IT DOESN'T GENERATE THE REPORT FOR FIRST RESULT. For Example.., if i generating report based on a particular date. After executing the query, it returns 4 results. So it has to create the reports in 4 pages. But it generates the report for last 3 pages only. It doesn't generate the report for first page. I have attached my .jrxml file servlet file for your reference.
I have been set this task, which is supposed to make me code using string arrays. The idea is to generate random sentences.This is what i have been able to do so far :
package usingarraysagain; public class sentences { public static void main (String[] args){ String[] NOUNS = { "lizards", "Nikola Tesla",
I am having trouble compiling my code for a java application that is supposed to print out the infinite series for Pi. Here is my java code:
//a java application that generates the infinite series for Pi, ie 3.14159...=4-4/3+4/5-4/7+4/9
public class Pi{ public static void main(String args[]){ //declare and initialize variables long counter=1; double pi;
[Code] ....
Here is the error in my output that results when I attempt to compile my code:
C:UsersanonymousDesktopchapter five exercises for javaPi.java:21: error: variable pi might not have been initialized total=total+pi; ^ 1 error Tool completed with exit code 1
Why do I need to initialized pi when I already initialized the total?
write a program to determine the sum of the following harmonic series for a given value of n:1+1/2+1/3+.............................+1/n the value of n should be given interactively through the keyboard.
tfrreee i want to display given series in ascending order in java prog here is an error : E:Javajdkin>java ascend 505671Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 7 at ascend.main(ascend.java:9)
Java Code:
class ascend { public static void main (String args[]) { int s[]={ 50,71,81,21,7}; int i; for(i=0;i<=s.length;i++)
I am trying to change this code to use only integers to calculate the compound interest.
// Compound-interest calculations with for.
public class Interest { public static void main( String args[] ) { double amount; // amount on deposit at end of each year double principal = 1000.0; // initial amount before interest double rate = 0.05; // interest rate
[Code] .....
And here is the output I get :
Why do I get the output after year 2? I assume it has something to do with the remainder.
I also have to format this output with the decimal point, etc.. which I think I will be ok with after I get through this part.
I am very new to programming. This is for a college assignment. It says in the brief of the assignment that we will need to convert Math.random to output a random number between 1-1000. How can I do this?
