I need help in some programs
i'm new in a jave and i need to write some programs
1) write a program that allows the user to enter a range of number. for that range of number, list the numbers and state their properties:
prime or not rrime; deficient, perfect, or abundant; smith number or not.
2) write a program that finds the largest Smith number possible that can be held in Java integer
BigDaddyLoveHandles wrote:
Psyber wrote:
Here's the algorithm for perfect numbers:
boolean p_num(int number) {
int sum = 1;
for (int n = 2; n <= number / 2; n++)
if (number % n == 0)
sum += n;
return sum == number ? true : false;
}Now hand over the dukes.Why not:
return sum == number;
Whaddya expect for 10 dukes?
Similar Messages
-
Need help writing host program using LabView.
Need help writing host program using LabView.
Hello,
I'm designing a HID device, and I want to write a host program using National Instrument's LabView. NI doesn't have any software support for USB, so I'm trying to write a few C dll files and link them to Call Library Functions. NI has some documentation on how to do this, but it's not exactly easy reading.
I've written a few C console programs (running Win 2K) using the PC host software example for a HID device from John Hyde's book "USB by design", and they run ok. From Hyde's example program, I've written a few functions that use a few API functions each. This makes the main program more streamlined. The functions are; GetHIDPath, OpenHID, GetHIDInfo, Writ
eHID, ReadHIC, and CloseHID. As I mentioned, my main program runs well with these functions.
My strategy is to make dll files from these functions and load them into LabView Call Library Functions. However, I'm having a number of subtle problems in trying to do this. The big problem I'm having now are build errors when I try to build to a dll.
I'm writing this post for a few reasons. First, I'm wondering if there are any LabView programmers who have already written USB HID host programs, and if they could give me some advice. Or, I would be grateful if a LabView or Visual C programmer could help me work out the programming problems that I'm having with my current program. If I get this LabView program working I would be happy to share it. I'm also wondering if there might already be any USB IHD LabView that I could download.
Any help would be appreciated.
Regards, George
George Dorian
Sutter Instruments
51 Digital DR.
Novato, CA 94949
USA
[email protected]
m
(415) 883-0128
FAX (415) 883-0572George may not answer you. He hasn't been online here for almost eight years.
Jim
You're entirely bonkers. But I'll tell you a secret. All the best people are. ~ Alice -
import java.util.*;
public class D3
private static int[] z = new int[100000];
private static int first=z[0];
private static int last=z[n-1];
private static int n=100000;
public static void main(String args[])
Scanner input=new Scanner(System.in);
for(int i=0;i<z.length;i++)
z=2*i;
int seqSearch(z;50000;n); //method call 4 key where key=mid
int binSearch(z;first;last;50000);
int seqSearch(z;35467;n); //method call 4 key where key in the left half
int binSearch(z;first;last;35467);
int seqSearch(z;89703;n); //method call 4 key where key in the right half
int binSearch(z;first;last;89703);
public int seqSearch(int z[];int key;int n)
long start = System.currentTimeMillis();
int count=0;
int ans=-1;
for(int i=0;i<n;i++)
if z=key
count++
{ans=i
break;}
return ans;
long elapsed = System.currentTimeMillis() - start;
System.out.print("Execution Time:" + elapsed);
System.out.print("# of Basic Operations:" + count);
public int binSearch(int z[];int first;int last;int key)
long start = System.currentTimeMillis();
int count=0;
if(last><first){
count++;
index=-1;
else
count++;
int mid=(first+last)/2
if(ket=z[mid]{
index=mid;
else
if(key><z[mid]){
index = binSearch(z[];first;mid-1;key);
else
index=binSearch(z[];mid+1;last;key);
return index;
long elapsed = System.currentTimeMillis() - start;
System.out.print("Execution Time:" + elapsed);
System.out.print("# of Basic Operations:" + count);
if anyone could please tell me whats wrong with my code i'd be greatful...the program is supposed to perform binary and sequential search on a sorted array of 100000 numbers.once on an item in the middle of the array once on the right side of it and once on the left side...i also need to count the number of basic operations for the same number in both sequential and binary to see whats better.and i need to check the time...i think the method call is wrong,not sure though...plz i need help.its not compiling and i dont know why..Just add new messages to a thread you've already created. Don't create a new thread each time.
Anyway, look. This is wrong:int seqSearch(z;50000;n); //method call 4 key where key=midfor two reasons. The first is that leading "int"; it doesn't mean anything here. "int" is used to declare an integer variable, but you're not declaring a variable here, you're invoking a method. The second problem is that you're using semicolons to separate arguments in the method call, but actually commas are correct. You probably want something more like this:
int result;
result = seqSearch(z, 50000, n); //method call 4 key where key=mid.
Some more problems with your code: you're calling non-static methods in a static context (the main method is static and seqSearch isn't). You're also using "n" before you declare it, which is probably a problem.
And this makes no sense:z=2*i;because you've declared z to be an array; you can't use the multiplication operator on an array. It's not clear really what you're trying to accomplish there.
Here's what I want you to do. Take your code and completely remove the binSearch method. Just rip it out. Then in your main() method, take out all references to the binSearch method, and all references except for the first one of the seqSearch method. Fix the things I mentioned above.
Then try to compile what you have. It won't compile. You will get error messages. That's OK. Just fix them and move on. If you don't understand an error message, ask on these forums (DON'T CROSSPOST), quoting the full error message and the relevant lines of code.
After a couple hours, you'll fix the syntactical bugs, and your program will compile. Then you'll find that it compiles but the program doesn't work right. That's also OK. This is how computer programming works. It's part of the process. Don't panic. At that point, you can start trying to fix the program so it does what it's supposed to. Eventually you'll get it to work.
Then, and only then add more invocations of the seqSearch method. They won't all work, probably. You'll find more bugs. That's OK. Just repeat the process of fixing them.
When you've fixed those bugs, then, and only then, add the binSearch method. Repeat the process of fixing syntax and hunting down and fixing bugs.
Then your program will work. -
I am in the process of making a new template for my site.
I can't really provide any code and here's why, I need help finding the code that I need to change. The new template is actually being designed here.
If you scroll over the home link you will find a sub-menu pops up, if you scroll over the menu items they get bigger and come 'at" you, if you hover over sub-2 and then hover over sub-3 you will notice there is a wild transition effect, I need to know how to get rid of those, it is a different CSS code from another template link to my site. I can't find out how, if somebody could please help me out it would be wonderful. Thank you a whole bunch in advance.Your menu moves for a couple of reasons first, you have a border in the hover, which is going to move all of the text. You can get rid of the border in the hover or add a border of the same size/style in the active.
The second reason it appears you have some paddng in the hover that moves the text.
Find those and you can solve the issue.
Gary -
Need help with inventory program!!! someone please help me!!!
Ok I have to write this inventory program for one of my classes.
For part one i needed to Create a product class that holds the item number, the name of product, the number of units in stock, and the price of each unit.
Then create a java application that displays all of the above info plus the total value of the inventory. I have done this so far with success.
For part two i needed to modify the program so the application can handle multiple items. Use an array to store the items. The output should display the information one product at a time including the item number, the name of the product, the number of units in stock, the price per unit, and the value of the inventory of that product. In addition, the output should display the value of the entire inventory.
so create a method to calculate the value of the entire inventory.(i did this)
and create another method to sort the array items by the name of the product. ( i did this)
The program compiles and runs fine except it is not doing anything from part two. It just does the same thing that it did when i wrote part one.
Does anyone know why or what i need to do to my code.
Here is my code.
import java.util.Scanner; // program uses class Scanner
import java.util.Arrays;
class ProductList
Product[] products = new Product[100]; // an array of 100 pruducts
private void populate() {
products[0] = new Product(0, "Good Luck Chuck" , 25, 4.95);
products[1] = new Product(1, "The Bourne Identity" , 3, 7.95);
products[2] = new Product(2, "The Reaping" , 5, 8.99);
products[3] = new Product(3, "Deja Vu" , 2,12.99);
products[4] = new Product(4, "I Know Who Killed Me" , 3,10.95);
private void sortByTitle() {
private void print() {
for(int i=0; i<products.length; i++) {
System.out.println(products);
private void printTotalInventoryValue() {
System.out.println("Total Inventory Value = "+calculateTotalInventoryValue());
private double calculateTotalInventoryValue() {
double total = 0D;
for(int i=0; i<products.length; i++) {
total += products[i].calculateInventoryValue();
return total;
public static void main( String args[] ) {
ProductList list = new ProductList();
list.populate();
list.sortByTitle();
list.print();
list.printTotalInventoryValue();
} class Product
private int id;
private String title;
private int stock;
private double price;
public Product(int id, String title, int stock, double price) {
setId(id);
setTitle(title);
setStock(stock);
setPrice(price);
public int getId() { return this.id; }
public void setId(int id) { this.id = id; }
public String getTitle() { return this.title; }
public void setTitle(String title) { this.title = title; }
public int getStock() { return this.stock; }
public void setStock(int stock) { this.stock = stock; }
public double getPrice() { return this.price; }
public void setPrice(double price) { this.price = price; }
public double calculateInventoryValue() {
return getStock() * getPrice();
public class Inventorypt2
private String ProductInfo; // call class product info
public static void main(String args[])
//create Scanner to obtain input from command window
Scanner input = new Scanner( System.in );
int num; // product's item number
int stock; // number of items in stock
double price; // price each of item
ProductInfo product; // product information instance
System.out.println(); // blank line
String name = "go";
// loop until sentinel value read from user
while ( !name.equalsIgnoreCase ("stop") )
System.out.print( "Enter DVD title, or STOP to quit: "); // prompt
name = input.nextLine(); // read item name from user or quit
System.out.print( "Enter the item number: "); // prompt
num = input.nextInt(); // read item number from user
while ( num <=0 ) //loop until item number is positive
System.out.println ("Item number must be positive. Please re-enter item number: ");//prompt user to re-enter item number
num = input.nextInt(); // read item number
} //end while
System.out.print( "Enter the quantity in stock: "); // prompt
stock = input.nextInt(); // read stock quantity from user
while ( stock <0 ) //loop until stock is positive
System.out.println ("Quantity in stock can not be less than zero. Please re-enter the quantity in stock: ");//prompt user to re-enter quantity in stock
stock = input.nextInt(); // read stock quantity from user
} //end while
System.out.print( "Enter the price of DVD: "); // prompt
price = input.nextDouble(); // read item price from user
while ( price <=0 ) //loop until price is positive
System.out.println ("Product price must be positive. Please re-enter the price of the product: ");//prompt user to re-enter product price
price = input.nextDouble(); // read item price from user
} //end while
product = new ProductInfo( num, name, stock, price); // initialize ProductInfo variables
System.out.println(); // blank line
System.out.printf( "Item Name: %S\n", product.getName());
System.out.printf( "Item Number: %s\n", product.getNum());
System.out.printf( "Qty. in Stock: %s\n", product.getStock());
System.out.printf( "Price Each: $%.2f\n", product.getPrice());
System.out.printf( "Total Value in Stock: $%.2f\n", product.getInventoryTotal());
System.out.println(); // blank line
System.out.print( "Enter DVD title, or STOP to quit: "); // prompt
name = "";
while ( name.equals("") )
name = input.nextLine(); // read new product name from user or quit
} //end while
System.out.println(); // blank line
System.out.println("Good Bye!"); // exit message
Edited by: jay1981 on Mar 16, 2008 2:07 PMYou will get more help if your code is formatted better:
* Only post code that is already formatted correctly including indentations.
* Get rid of all those comments cluttering up your code.
* Make sure your posted code compiles without need for any changes. Yours doesn't at present. Where is the ProductInfo class?
Again, you want it easy for a volunteer here to read your post, otherwise he/she simply won't do it. Good luck. -
Need help writing Labview Program!!!!!
I have a labview project that needs to be finished. I was not the original creator of the program and the guy who created no longer is involved with the project and I am left to finish it. Could you make the final adjustment so I can turn this into my professor and get the final grade. Thanks! Willing to pay! Negeotiable price!!!!!!!!
Need help completing assignment! Could anyone assist me in this project!
Attachments:
dial tone detection.zip 1253 KB -
Need help writing small program!
Hi. I'm learning Java programming, and I need help writing a small program. Please someone help me.
Directions:
Create a program called CerealCompare using an if-then-else structure that obtains the price and number of ounces in a box for two boxes of cereal. The program should then output which box costs less per ounce.class CerealCompare {
public static void main(String[] args) {
// your code goes here
}Hope that helps.
P.S. Java does not have an if-then-else statement. -
I need help getting some photos off a really old ipod
Ok so here it is.... My grandparents way back when gave me an ipod video, I just recently found it and realized it has photo's on it that I would like to keep. My problems are 1. I don't have the original computer I used for it 2. when I plug it in my computer thinks it's a hard drive 3. autoplay won't give me the option to import the photo's to my computer and 4. itunes doesn't seem to have an option to transfer photo's from ipods to your pictures folder.... if any one could help I'd appriciate it.
The photos you synced to your iPod through iTunes are no longer in their full resolution, but instead are scaled down thumbnails of those photos. So if you do manage to get them off your iPod, they will be quite small in size compared to the original ones you lost.
In order to get them off of your iPod, you'll need the help of some sort of 3rd party software. Here is one option. You can Google for more.
http://www.macroplant.com/podtopc/
B-rock -
Hi, I am new on pda programming. I already develop a java program using j2sdk1.4.2_05. I need to run this program in pda for my final project. Can i do this using creme? What version do i must use?
If j2sdk1.4.2_05 can't, does jdk1.3.1 can?
And anybody know where can i find pocket pc emulator so i can test my program on pc?
Many Thanks before,
tinnahi,
I am currently doing a project in pda application. We are using jeode as a VM for the pda. But it uses java 1.2. Maybe you want to have a look at it. however u cant use the swing class in jeode and only awt is the class availlable for programming interfaces.
If you need jeode u can contact me. I can give you a free copy which was availlable till last year as now it has gone chargable.
Also do you have any idea about how can i read and write txt files or dat files from desktop using java. I want to use a usb cradle for connection.
This information would be really appreciated as I need this for my second year project. -
Need help with some JS installing Bumpbox 2.0
I am trying to add a lightbox effect to a pdf on my website, I found a Javascript plugin at http://www.artviper.net/bumpbox-demo/index.html that looks like it should do the trick, but I am having trouble getting it to work.
To narrow down the problem I created a test.html file that I stuck in the root directory of the folder I downloaded from their site (so I am working locally off my desktop at this point)
My code is as follows... I feel like I am missing something super obvious, does anyone see it? (do I need to define the .bump class in the css file?)
Thank you in advance for the much needed help!
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Untitled Document</title>
</head>
<body>
<a href="http://www.artviper.net/test.pdf" class="bump" rel="800-350">PDF File »</a><br />
<script type="text/javascript" src="js/mootools.js"></script>
<script type="text/javascript" src="js/bumpbox-2.0.1.js"></script>
<script type="text/javascript"> doBump( '.bump',750, 500, '111', '900', '0.8', 5, 1 ,'333', 15,'000', 4,
Fx.Transitions.Bounce.EaseOut,
Fx.Transitions.Bounce.EaseOut,
'images/demo_bg_bumpbox.png',
'top left',
'repeat-x' ); </script>
</body>
</html>These paths won't work because they point to files on your local hard drive.
<script type="text/javascript" src="file:///Macintosh HD/Users/Robert/Downloads/bumpbox Folder copy/js/mootools.js"></script>
<script type="text/javascript" src="file:///Macintosh HD/Users/Robert/Downloads/bumpbox Folder copy/js/bumpbox-2.0.1.js"></script>
Are you working within a properly defined local site?
Did you save those javascript files to the js folder in your local site root?
Correct path to scripts for this test page should look like this:
<script type="text/javascript" src="../js/mootools.js"></script>
<script type="text/javascript" src="../js/bumpbox-2.0.1.js"></script>
PS. Do not add spaces to folder or file names. It can create problems for web files.
Nancy O. -
Need help with some Coldfusion data structures
Hello,
I need to keep some sort of a list that contains a page, and then that page will have associated with it values. So,
if I have page 1, I may have values 240, 245, 300. Then, on to page 2, and I will have say, 344, 29, etc.
So, what I will have is something that "could maybe" be a 2 dimensional array where one of the elements is a list?
Or, do I set up a struct say, page.number and page.value list, and put that struct in an array?
Plus, the fun part is I have to save this bad boy in session. I've been looking around the web for some examples, no
luck. So, to reiterate:
I have a page number that has to be associated with a list. That entire structure needs to be in an array or list of
some sort, and stored in session.
Thanks in advance!Really Google did not show anything like:
<cfset session.pageAry = [
{page="pageOne", numList="240,245,300"},
{page="pageTwo", numList="344,29"}]>
<cfdump var="#session.pageAry#">
OR
<cfset session.pageAry = arrayNew(1)>
<cfset arrayAppend(session.pageAry, strutNew())>
<cfset session.pageAry[1].page = "pageOne">
<cfset session.pageAry[1].numList = "240,245,300">
<cfset arrayAppend(session.pageAry, strutNew())>
<cfset session.pageAry[2].page = "pageTwo">
<cfset session.pageAry[2].numList = "344,29">
OR
The <cfscript> version of these examples. -
I need help with some character replacement
I have a package that calls another package to determine if there are any of 4 values (&,<,>,") and I want to replace the value in the package with the proper value for HTML. If I can get the & figured out I can handle the rest, I just need help getting past this part. I consider myself a novice at PL/SQL so any input is welcome. The package body gives me this message on compile:
PLS-00103: Encountered the symbol ";" when expecting one of the following:
if
I'm stuck on how to do the actual replace within the package. The code for the replace block is below: using a package and procedure in the package body. I'm using TOAD 9.x on 10gR2.
I have a feeling the the assignment of the := is having a problem but I'm not sure. This is all part of a larger chunk of code I've written to dynamically create audit triggers (before and after) for my data tables and it writes out to the audit in xml on a row by row basis. The XML insert is failing on on the 4 special characters that need to be converted to their HTML proper use.
CREATE OR REPLACE package pkg_audit_xml
as
procedure change_illegal_char
(p_new_val in varchar2,
p_old_val in varchar2,
p_has_changed in out boolean);
end;
CREATE OR REPLACE package body pkg_audit_xml
as
procedure change_illegal_char
(p_new_val in varchar2,
p_old_val in varchar2,
p_has_changed in out boolean)
is
v_temp clob;
begin
if ( nvl(p_new_val, ' ') <> nvl(p_old_val, ' ') ) then
p_has_changed := true;
p_old_val := replace(p_old_val,'&','&');
p_new_val := replace(p_new_val,'&','&');
end if;
end;
end pkg_audit_xml;
/SQL> create or replace procedure aa_test(a_old_val IN varchar2) as
2 begin
3 a_old_val := substr(a_old_val,1,4);
4 dbms_output.put_line(a_old_val);
5 end;
6 /
Warning: Procedure created with compilation errors.
SQL> show errors
Errors for PROCEDURE AA_TEST:
LINE/COL ERROR
3/2 PL/SQL: Statement ignored
3/2 PLS-00363: expression 'A_OLD_VAL' cannot be used as an assignment
target -
HT5538 I dont really get this i need help setting some things up on my Ipod.Can you help?
I need help setting up my Imessage and FaceTime.I have tryed and its not working.
iOS: Using FaceTime
iOS: About Messages
iOS: Troubleshooting FaceTime and iMessage activation
iOS: Troubleshooting Messages
iOS: Troubleshooting FaceTime -
Hi,
I need help with my web application. When i tried to run it using
localhost:8080
it's giving me error that
signup.do file is not available.
can someone tell me what could be wrong with my code?
I want to know what is .do file and what needs to do to have remove the error
I have also used struts config file.
Please help me.
Message was edited by:
star4588See struts documentation here http://struts.apache.org/1.2.9/userGuide/building_controller.html#action_mapping_example
you should have something like that :
<action-mappings>
<action
path="/signup"
type="org.apache.struts.webapp.example.SignupAction"
name="signupForm"
scope="request"
input="/signup.jsp"
unknown="false"
validate="true" />
</action-mappings>in your struts-config.xml.
Hope That Helps -
I also need help with a programming assingment. I think I'm almost there!
I have the following assingment to complete:Once again, you realize that you need to upgrade your Java program with two more features:
Be able to print products which are �On Sale�.
Use arrays to store the product names so that you can keep track of your inventory.
After some analysis, you notice that printing the products can be achieved by modifying the two classes you have already written. One approach would be to add a Boolean attribute called �OnSale� to the ToddlerToy and add a print method that print information about a product indicating if it is �On Sale�.
Update your constructor, taking into account the �On Sale� attribute.
Create two more instances: a small train called Train4 and a big train called Train5. Mark both trains �On Sale�
Add another method that prints the sale information
Keeping track of the names of products can be achieved by declaring an array of strings in the ToysManager class itself. Each time a new product is created, it is also added to the array. Use a while construct to print the product names in your inventory.
This is the code I have come up with:
public class ToysManager {
private String toyInventory[] = {"Big Train","Small Train"};
public void printInventory() {
System.out.println("List of Items in Toy Inventory");
for (int i=0; i<toyInventory.length; i++)
{ System.out.println(toyInventory[i])); } // ";"expected - ToysManager.java
public static void main(String[] args) {
//System.out.println("This is the main method of class ToysManager.");
//call on ToysManager printInventory method for a listing of all toy types
printInventory();
// Create ToddlerToy Objects Train1,Train2,Train3,Train4,Train5
ToddlerToy Train1 = new ToddlerToy(489, "Big Train", 19.95,false);
Train1.printOnSale();
ToddlerToy Train2 = new ToddlerToy(489, "Big Train", 19.95,false);
Train2.printOnSale();
ToddlerToy Train3 = new ToddlerToy(477, "Small Train", 12.95,false);
Train3.printOnSale();
ToddlerToy Train4 = new ToddlerToy(477, "Small Train", 12.95,true);
Train4.printOnSale();
ToddlerToy Train5 = new ToddlerToy(489, "Big Train", 19.95,true);
Train5.printOnSale();
} //this is the end bracket for the main method
} //this is the end bracket for the ToysManager class
class ToddlerToy {
// Initialize and Assign Data Types to each Variables
private int productID;
public String productName;
public double productPrice;
private boolean onSale;
public void ToddlerToy(int a, String b, double c, boolean d) {
// Assign Data to Variables
productID = a;
productName = b;
productPrice = c;
onSale = d;
//PrintProductPrice(ProductPrice);
} //end of constructor
public void printOnSale(){
if(onSale == true) System.out.println("This item #" + productID + ": " + productName + "is on sale");
I don't have any problems with class ToddlerToy. I can compile that with no problems. I'm having issues with public class ToysManager. I can't compile that one correctly. It fails at:
{ System.out.println(toyInventory[i])); } // ";"expected - ToysManager.java
I've looked through the java books I have and also online, but I can't figure this out. I'm new to java so any help would be appreciated.
Thanks in advance.Thanks. That got me past that error. I was hung up on that for far too long. I made some changes and when i compile the ToysManager class it shoots a different error. The code now looks like this:
public class ToysManager {
private String toyInventory[] = {"Big Train","Small Train"};
public void printInventory() {
System.out.println("List of Items in Toy Inventory");
for (int i=0; i<toyInventory.length; i++){
System.out.println(toyInventory);
public static void main(String[] args) {
//System.out.println("This is the main method of class ToysManager.");
//call on ToysManager printInventory method for a listing of all toy types
printInventory();
// Create ToddlerToy Objects Train1,Train2,Train3,Train4,Train5
ToddlerToy Train1 = new ToddlerToy(489, "Big Train", 19.95,false);
Train1.printOnSale();
ToddlerToy Train2 = new ToddlerToy(489, "Big Train", 19.95,false);
Train2.printOnSale();
ToddlerToy Train3 = new ToddlerToy(477, "Small Train", 12.95,false);
Train3.printOnSale();
ToddlerToy Train4 = new ToddlerToy(477, "Small Train", 12.95,true);
Train4.printOnSale();
ToddlerToy Train5 = new ToddlerToy(489, "Big Train", 19.95,true);
Train5.printOnSale();
} //this is the end bracket for the main method
} //this is the end bracket for the ToysManager class
I get an illegal start of expression for:
public static void main(String[] args) {
and ";" expected for:
} //this is the end bracket for the main method
I looked over my initial code, before the "for" loop?, and the public static void main was a valid statement.
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