Multiplying Two Single Arrays (Corresponding Iteration)

Dec 14, 2014

Is there a way to multiply two single arrays in which the corresponding iteration from one array multiplies with the corresponding iteration from the second array. For example say you have array1[] and array2[]. Each array has a length of 5. Is there a way to multiply array1[0] by array2[0] and array1[1] by array2[1] and so on.... without having to actually write out the equation of array1[0] + array2[0] = someValue for all iterations of the two arrays?

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Merging Two Sorted Arrays Into A Single Sorted Array?

Jun 13, 2014

The code is meant to input 2 arrays (they must be sorted even if this is not verified ) and then merge them in such a way that a sorted merged array is created at the end.I need to avoid a simple concatenation and then sorting the resulting array operation.I m interested in what i m doing wrong .

The input i used was :

Enter list1:
5 1 5 16 61 111
Enter list2:
4 2 4 5 6
import java.util.*;
public class C7_31 {
public static void main(String[] args){
Scanner input = new Scanner(System.in);

[code]...

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Print ASCII Image Using Nested For Loops - Reverse Iteration?

Oct 6, 2014

I'm writing a program to print an ASCII image using nested for loops. The output is a rocket ship that looks like this.

/**
//**
///**
////**\
/////**\
+=*=*=*=*=*=*+
|../..../..|
|.//..//.|
|//////|
|//////|
|.//..//.|
|../..../..|
+=*=*=*=*=*=*+
|//////|
|.//..//.|
|../..../..|
|../..../..|
|.//..//.|
|//////|
+=*=*=*=*=*=*+
/**
//**
///**
////**\
/////**\

I'm having problems with the mid section of the rocket, specifically the bottom part of the mid section:

|../..../..|
|.//..//.|
|//////|

I'm having difficulty writing the for loop to correctly print the dots. You're supposed to incorporate a constant which allows you to adjust the size of the overall figure. The loop doesn't work when I adjust the size, only when the value of HEIGHT is 3. The loop, however, for some reason works with the top part of the mid section.

This is the for loop for the top section.

for (int dots = 1; dots <= -1 * line + 1 * HEIGHT; dots++) {
System.out.print(".");
}

This is the for loop for the bottom section.

for (int dots = -1 * line + 1 * HEIGHT; dots <= 1; dots++) {
System.out.print(".");
}

Usually reversing the iteration of the loop just requires flipping the conditions, right? But it didn't work this time for some reason. Why this doesn't work? I can post the code to my entire program for compiling.

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For Loop To Count Values Of Stack Of Quarters From 1.00 To 3.00 And Print Value Of Each Iteration

Nov 2, 2014

I had to write a foor loop to count the values of a stack of quarters from 1.00 to 3.00 and I had to print the values, that I understood and got it working so I taught the next assignment was going to be easier but I am having a hard time with it. For this one I have to write a for loop to print all the positive integer factors of 144 and I am supposed to print of factor per line but I tried doing that but it doesn't work it just prints out 144.

This is my code. The quarter assignment is also in there because it is part of a lab so just ignore that part since it is working correctly.

public class ForLoopPractice
{
public static void main(String [] args)
{
// Write a for loop to count out the values of a stack of quarters from $1.00 to $3.00
// Print the value of each iteration. Print this all on one line, rounded to the nearest cent.
// To print rounded, use printf, with a placeholder of %.2f
// (%f is the floating-point placeholder; the .2 indicates the number of decimal places)
/* YOUR CODE HERE */
for (double q = 1.00; q <= 3.00; q += .25)

[Code] ....

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JavaFX 2.0 :: Predicate Bindings - How To Prevent Rebuilding Them For Each Iteration Of FilteredList

Dec 4, 2014

We're twisting our minds how to use predicate bindings correctly in the real world, i. e. beyond the trivial examples for FilteredList using simply static code but no bindings!
 
The problem is that our predicate must be bound to a chain of BooleanBindings, of which the final term needs the item injected into the predicate by the FilteredList. Example see purple code:
 
BooleanBinding a = ...
StringBinding b = ...
ObjectBinding<Predicate> c = Bindings.createObjectBinding(() -> item -> a.or(b.isEqualTo(item.someProperty())).get(), a, b); // Ugly: No "Bindings" style!
myFilteredList.predicateProperty().bind(c);
 
This code has an ugly smell! It first looks like "Bindings" style, but in fact is plain old lamba mostly! But it also is slow: The code enforces splitting of a and b into separate bindings as it enforces rebuilding the chain a.or(b.isEqualTo(...)) for each single iteration of titem in turn. That induces unnecessarily creating and garbage-collecting Bindings "on the fly", which is not how Bindings are intended -- they shall be created once and simply update their value instead of getting replaced themselves to prevent wasting CPU cycles and keep memory clean.
 
How to do Predicate Bindings correctly (i. e. without temporarily building Bindings for each "t") ...

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Multiplying By Hundred Million

Oct 26, 2014

I multiplied 100 000 000 by .14145023952445 on java and the output I got is 1.4145023952444999E7. I know it is equal to 14145023.952445 but why is that?

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Multiplying Long Integers 10+ Digits?

Nov 7, 2014

Taking two input strings that are integers such as "1234" and "567" then multiplying as you would do by hand. Trying to get them saved in the n3 new string but something is going wrong. You also need to account for the zeroes that have to be added just like on paper.

String mulN(String n1, String n2) {
int p = 0, tmp = 0; int zeros = 0;
String n3= "";
String r = "";
for(int i = n2.length()-1; i >= 0; i--) {

[Code] .....

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Multiplying Two Strings - Float Values

Jul 1, 2014

I am currently learning about JOption pane. Using Strings I am accepting an input from the user and by using the Interer.ParseInt(variable) option I am able to multiply this two strings using the code below.

String Length;
Length = JOptionPane.showInputDialog("Enter the Length");
String Breadth;
Breadth = JOptionPane.showInputDialog("Enter the Breadth");
System.out.println(" Area is " + (Integer.parseInt(Breadth) * Integer.parseInt(Length)));
System.exit(0);

Now My question is... How Do I make my code accept Decimal values. E.g. My Code should accept 10.02 as Length and 20.42 as Breadth and give the product a Decimal. How Do I do this???

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Multiplying Last 2 Digits In A Year From User Input

May 2, 2014

I Have been playing with this for while, and I can not seem to get my head around, how I can do this. I need to get the last two digits of a year that a user will enter. For example, a date like July 2 , 2014, I want to get the last two digits of year 2014 which are "14" and divide it by 4. This will give me 3.5; how ever I will disregard the ".5" and just keep the 14. I have no problem doing the division, my biggest this is how to just get the last two digits of a year. This is what I have so far, it is basically a template of how I want my program; I just need getting the last 2 digits of a year.

public class DateCalc
{
public static void main (String[] args)
{
String month;
int day;
int year;

[Code] ....

" This will give me 3.5; how ever I will disregard the ".5" and just keep the 14 ". I meant that I just want to keep the 3 from the 3.5 that will be generated when you divide 14 by 4.

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Read From User Input (integer) And Reduce It By Multiplying Its Non-zero Digits

Nov 15, 2014

Write a program that reads from the user an integer and reduce it by multiplying its non-zero digits. The result of the multiplication is a number which is to be reduced as the initial one. This process continues until an integer of one single digit is obtained. For example:

64734502 (6 * 4 * 7 * 3 * 4 * 5 * 2) 20160 (2 * 1 * 6) 12 (1 * 2) 2

Your program should display the number obtained in every iteration.

Sample run1
Enter an integer: 64734502
After iteration 1: 20160
After iteration 2: 12
After iteration 3: 2

Sample run2
Enter an integer: 97737999
After iteration 1: 6751269
After iteration 2: 22680
After iteration 3: 192
After iteration 4: 18
After iteration 5: 8

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Jun 28, 2014

I mainly would like to know is a int[4][4] or a int [4*4] is more efficient to use. Which takes more storage? Which requires more to process? that kind of stuff.

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Count Single Digits

Apr 25, 2014

why exactly this isn't printing out the correct way.I'm supposed to print out 100 elements from an array but assign them random integers between 0 and 9.I've tried troubleshooting the issue and when I do it seems i'm only getting one element assigned.

public class Exercise_6_7{
public static void main(String[] args){
int[] counts = new int[100];
for(int i=0; i<counts.length; i++){
counts[i] = (int)(Math.random()*10);

[code]....

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Mar 31, 2013

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May 27, 2014

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Feb 11, 2015

i'm currently going over single linked list, and i'm coming across an error which i do not know how to get by. I'm using single linked list for now just for study purposes, then i would move on to double.

Error: No enclosing instance of type LList is accessible. Must qualify the allocation with an enclosing instance of type LList (e.g. x.new A() where x is an instance of LList).

public class LList {
private static class Node<E>{
private E data;
private Node<E> next;

[code]....

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Feb 13, 2015

i'm currently studying over single linkedLists and i'm just writing various methods for it. One method i'm currently stuck on is writing a remove method where it returns a boolean true if its found and it will delete it, and false if the target isn't found. My problem is that it always comes up as flase and i know that the target is in the linked list. Here is the code for my method.

Java Code: public boolean remove(E item){
Node<E> ptr = head;
while(ptr!= null && !item.equals(item))
ptr = ptr.next;
if(ptr.data.equals(item)){
ptr.next = ptr.next.next;

[code]...

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Apr 3, 2014

i want to know how i can add more than one frame in a single frame means main window or frame will be constant and only components will be chang or vary as in a software or game .

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Aug 1, 2014

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Oct 8, 2014

I have a project which has a set of configuration files, where each configuration file represents an environment specific configurations. In other words, I have 3 environments, development, staging, and production. The configuration for each environment is different, e.g. DB name, url etc.

Whenever I want to deploy the same code, on each environment, I have to manually generate environment specific .war file, so that it has environment specific configuration file in it.

What I am looking for is a kind of solution where i have to compile only once in maven and it generates only one .war file, which I can use on every environment. In other words, i want the environment specifi application server/tomcat to identify which configuration to pick.

That way, I'll be sure that we are deploying and testing the same .war file on every environment/application server.

How can i restructure the application to achieve this functionality?

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May 15, 2014

I have an application where the WebContent folder has a number of .jsp pages like navigation.jsp, primarytabs.jsp etc.

The navigation.jsp contains a vertical menu and the primarytabs.jsp contains a tab on top, and some other jsps contain individual components.

When I run the application of the application server, it opens up a welcome page, and all these navigation items, and tabs and others merge into a single view and show us a well formed combination of all these components.

I did some studying and read about "composite views". But I wasn't sure if I can call this composite view or not.

How JSF combines all these jsps into one view and where to find that "binding" within the code so I can make the relevant changes?

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Jun 6, 2010

This is my code-

<%@ page contentType="text/html; charset=iso-8859-1" language="java" import="java.sql.*" errorPage="" %>
<body>
<center>
<form>
<table border="0">
<tr> <td> bulbtype </td>
<td> <input type="text" name="bulbtype"></td> </tr>

[Code] ....

Im getting this error:

An error occurred at line: 24 in the jsp file: /bulb1.jsp
bulbwatts cannot be resolved
21: Statement stmt=conn.createStatement();
22: Statement st=conn.createStatement();
23: ResultSet rs1 = stmt.executeQuery("select * from bulb where type="+bulbtype);
24: ResultSet rs2 = st.executeQuery("select * from bulb where watts="+bulbwatts);
25: %>
26: <%while(rs1.next()){%>
27: <tr> <td>name1</td>

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Sep 13, 2014

package progProject5;
// Implementation of single linked list.
public class SingleLinkedList<E> {
private Node<E> head = null;
private int size = 0;
// Methods

[Code] ......

I am in learning process and I know its very basic question but I got stucked at addAfter() where I need to insert the node after the given node.

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Mar 24, 2014

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button.add(lbl).addIcon().addActionListener(al);

but only in the aspect of using .method.method.method

The reason I'm asking is because I want to shorten this

int j = 0;
for(int i = 0; i <= 6; i+=3){
pnl[j+2].add(lbl[i+5]);
pnl[j+2].add(lbl[i+6]);
pnl[j+2].add(drop[j]);
pnl[j+2].add(lbl[i+7]);
pnl[j+2].add(btn[j]);
j++;
}

Into something like this

int j = 0;
for(int i = 0; i <= 6; i+=3){
pnl[j+2].add(lbl[i+5])
.add(lbl[i+6])
.add(drop[j])
.add(lbl[i+7])
.add(btn[j]);
j++;
}

I might be way off though... but I'm just wondering under what circumstances would this be possible

When I try it in Eclipse a little notification appears that says...

"The method add(PopupMenu) in the type Component is not applicable for the arguments (JLabel)"

When I google 'Component' I see it appears to have something to do with Serialization (which I'll need to look into)

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