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; iWhen 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 Like 44 Dislike
Previous forums Next forums
Other forums

Trouble checking SESSION cookie
I am trying to use $_SESSION cookies to verify admin privileges .
I don't understand why this is

SCO Unix
I know this might not be the place to ask, but, can anyone tell me if SCO Unix comes with PHP built

Pass sql into pl/sql and create RMAN duplicate script.
Hi,

I'm new to pl/sql and I'm trying to write a script that will generate some RMAN comma

please help me in this update statment
hi every one

if I have table and this data in it

id name
10

couldn't connect to your database
Hello I am new to php mysql

Actually i have read A tutorial on nettuts
"http://net.tu

PHP header help!
Hi all I am trying to get this php page to refresh every 5 seconds on my phone which is an aastra 48

help with email script...
hey

I need help with my mail script

when the form on http://www.mcgdesignstudio.com/c

bit of help needed
Im about to sort out my registration page for my website by customising a "registration" s

MySQL Primary key gap
Alright, so I have a table with 26 entries in it (id, filename, caption) for my image randomiser (ht

data type in column definition
Hi,
I create a table with column called "Direction of Travel code ".
The travel codes in t

Sign up to write
Sign up now if you have flare of writing..
Login   |   Register
Follow Us
Indyaspeak @ Facebook Indyaspeak @ Twitter Indyaspeak @ Pinterest RSS



Play Free Quiz and Win Cash