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; 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

how to validate date using javascript
I need to validate date in textbox using javascript..
The date is must be not greater than TODAY

Hyperlink in PHP to MySQL record
Hello,

I am having trouble as i am new to php. I have connected to the database and I have di

setcookie and isset($_COOKIE(name)) seem very finnicky.
I'm currently playing around with a user system with login and registration. I'm trying to use cooki

Images outside webroot
Im hopeing someone can help me with this because i cant figure it out.I have setup an ASP.NET websit

Sharing PHP Sessions Across Domains
I am in the process of writing a script to share a php session across various domains I have.
The

C problem struct and string
Hi guys,

This is my first post and I'm hoping the experts here can help me solve my problem.<

search function
HI guys,

if anyone could point us in the right direction of how to do this, or provide some t

Setting/Modify Headers using mail() function
I have a question about setting email headers when using mail() in a php script.

When I send

Batch update record with Pagination
Hoping someone can help me with this issue I'm having, im trying to batch update records from a resu

BI in Upstream Production operations
Appreciate if you can assist in the following areas:
1) Examples of life before and after BI i

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