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.
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
Help with usergroups? prolly really quick
So were coding our own forums for a game system we made an we have the users level setup but now I n
losing session vars when arriving from an email link
Hi,
I've got a confirmation script made that sends an email with a link for a user to confirm
listing help
Hi,
at first, great new design!!! I like it,
i got a problem,
I want to list so
Renaming a file that a user uploads to site?
My site allows for registered users to upload images to the site under their own gallery. Currently
FAGL_FC_TRANSLATION FAS52 New GL ECC 6.0
Hello,
The new program for Translating GL Balances (FAS 52) gives the option to use diffe
Warning: session_start() headers already sent error - Driving me Nuts!
I am trying my sister in laws site and I keep getting an error with my coding. I am more of a design
Upload simple problem
Really confused!! I run once and it worked, but when i tried today...it didn't work
Which par
IF Statement & Two Tables With Different Echoes
I'm retrieving two tables in a single query using UNION ALL, like so:
Code: $query = "SE
Why does my php page download images over and over
Can anybody please explain to me why my php page keeps downloading the images and other items every
Preserving user-entered linebreaks
Hi, I'm building a web 2.0 thingy from scratch and I wanna display text which users input. It's all