LinkedList help
Posted on
16th Feb 2014 07:03 pm by
admin
Ok so I just learned quickly about lists, so I have a not too hard project I think, but am having a few issues:
Here is the project. Create a lovely polynomial calculator, that takes the equation from the user, and a number for x.
Then solve it, but I have to use lists. As well as that I have to printout the equation with x at the end. And I will also have to have to add a method for finding the derivative of the equation.
Did you know?Explore Trending and Topic pages for more stories like this.
I'll worry about the printout and the derivative at the end, except I have a problem right now... I'll show my code first
Here is the lovely main
Code: import java.util.*;public class PolyDriver { public static void main(String[] args) { boolean isrunning = true; String userinput="no"; String no="no"; String yes="yes"; double whatisx=0; Scanner scan = new Scanner(System.in); System.out.println("What is X?"); whatisx =scan.nextDouble(); while(userinput.equals(no)) { System.out.println("Enter the first integer"); double d = scan.nextDouble(); System.out.println("Enter the exponent"); int e = scan.nextInt(); Poly m = new Poly(d, e, whatisx); System.out.println("Done?"); String j = scan.next(); if(j.equals(yes)) { System.exit(0); } } // System.out.println("Enter the number for x"); // Scanner scan = new Scanner(System.in); }}
Then here is the Poly class
Code: import java.util.*;/* * To change this template, choose Tools | Templates * and open the template in the editor. *//** * * @author JigglyWiggly-laptop */public class Poly { double integer=0; int exponent=0; double variable=0; double vrz=0; double whatisx=0; LinkedList linkedlist = new LinkedList(); public Poly(double d, int e, double x) { integer=d; exponent=e; whatisx=x; calculations(); // calculations(); } public double calculations() { double v = Math.pow(whatisx, exponent); double j = v*integer; linkedlist.add(j); printout(); return j; } public double printout() { for(int i=0; i
When I run it:
Code: run:What is X?2Enter the first integer2Enter the exponent2---18.0Done?noEnter the first integer2Enter the exponent2---18.0Done?noEnter the first integer2Enter the exponent2---18.0Done? Why does it not make the list bigger? And the numbers should be adding up. Any ideas?
(Also ignore the funky way of getting the user input, this is the way we were told to do so)
No comments posted yet
Your Answer:
Login to answer
318
44
Other forums
update post issues
I am trying to create an update to a post function, while the update does occur, the page routing an
media recovery
Hi,
i startup the database i got the error
SQL> startup
ORACLE instance started.
Strange PHP/mySQL error ... am I just tired?
Code: <?
## CONNECT TO DB FUNCTION!
function ConnectTo($db2con)
{
$hostNam
Forum tutorial
Im a beginner in PHP. Im making a forum(previous questbook, counter and few others) to learn. For no
JSON SORT WITH PHP
I have two products that I want to sort by say "Id:17, value: xxx" using php
The page w
Delete all from a table
I can not get the following code to work. If I run the sql statement in the db it will delete all t
PHP & Java
Hello,
can PHP code be used inside java code?
Code: <SCRIPT LANGUAGE="Java
Module pool selction screen parameters combination logic
Hi floks,
Am new to the module pool development ,Recently i have created one program based on
Call db table from any PHP file
Hi,
I want to be able to call a database table that will be setup in another file called init
LOOPing Problem
Hello All!
The following code loops through the data and displays the data accordingly. My p