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
Recording popularity by day, week.. all time?
Hey everyone, I'm creating a site designed around users uploading music. How can I implement a syste
Javascript using window.location seems to lose state
Not sure what forum so let me know if I'm in the wrong place.
I have a main window with a ajax grid
Need help: how to catch acess of undefined class properties
Hello. I am learning OO with PHP and have hit a problem.
Some code runs as perfectly valid code,
how to configure ADS in ABAP instance
Hi All,
I am working on r/3 4.7 ABAP system.Can we configure ADS(adobe document services)
Can I use a loop
Hi buddies!
Once again with my doubts here.
Right now I am using this sql stat
Session problem?!?
Hello All! I am very new to the php world but I am working on fixing things that a previous programm
distinct rows
Hi
version 10.2.0.3
I have a query output something like the following
ID
registration form
first time posting. did some searches but didnt find exactly what i am looking for. dont flame cause
Retrieving the 25 most recently added entries from all tables in a MySQL databas
Hello,
The code below works great. It creates a table that shows the 25 most recently added t
selectbox+database connection retrive problem
Code: [Select]
<tr>
<th align="left" scope="c