How To Traverse Through Linked List And Remove Specific Element

Nov 12, 2014

This is my first time using linked lists and for homework I have to make a program that allows the user to make a linked list of Strings (names) and then choose who to eliminate. For example,

Five people in a linked list of Strings: Joe, Mary, Sue, Tom, Hannah.

I would like the program to ask the user to choose a number between 1 and 5. If the user chooses number 2, Mary is the second person in the linked list so she gets eliminated.

The problem is that I'm not sure how to traverse through the linked list because they are of type String value, and I am looking for the name using the corresponding integer I mentioned above.

Here is my code:

package llchallenge;
import java.util.LinkedList;
import java.util.List;
import java.util.ListIterator;
import java.util.Scanner;
public class LLChallenge
{
List JosephusList = new LinkedList(); // order of names

[Code] ....

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How To Traverse Through Linked List And Remove Specific Element

Nov 12, 2014

I have to make a program that allows the user to make a linked list of Strings (names) and then choose who to eliminate.

For example: Five people in a linked list of Strings: I would like the program to ask the user to choose a number between 1 and 5. If the user chooses number 2, Mary is the second person in the linked list so she gets eliminated.

The problem is that I'm not sure how to traverse through the linked list because they are of type String value, and I am looking for the name using the corresponding integer I mentioned above. I think I have to use Nodes? Not very sure where to start right now.Here is my code:

package llchallenge;
import java.util.LinkedList;
import java.util.List;
import java.util.ListIterator;
import java.util.Scanner;

[code]...

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I have to make a method called search that goes through the linked list and checks to see if whatever String the user entered matches a String in the linked list. With this code, every time I enter an existing String it outputs "There is no element that contains that information". How come?

public class LinkedListExample {
List InfoList = new LinkedList();
public void doLinkedListExample()
{ // add original data to linked list
InfoList.add("Computer"); // string (original 3 elements)
InfoList.add("Programs");
InfoList.add("in Java");
 
[code]....

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Jan 1, 2015

AddItemToFront(Item p) : This method will create a new Node with the Item object as its data value and then add the newly created node to the front of the linked list.

DisplayItems(): This method will traverse the linked list from first node to last node and print data value ( i.e., id, name, type and price of the Item object) of each node.

RemoveItemAtPosition(int n): This method will remove the node at position n in the linked list. Assume that the first node of the linked list has a position number of 1 and the second node has a position number of 2 and so on.

This is my Code

AddItemToFront
public void AddItemtoFront(Item p)
{
Node newNode = new Node(p);
newNode.setLink(head);
head = newNode;

[Code] ....

I don't know what am I suppose to do inside the remove method

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package test2;
import java.util.LinkedList;
public class Q {
public static void main(String[] args) {
LinkedList link = new LinkedList();

[Code] ....

So how to delete an element in the middle of the linked list?

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if one address point on another address. so set and get methods will be less efficient then an array, but add or remove will be more efficient by a linked list ? a linked list also inherit from queue so if i add an elemnt via "addFirst" function . where its adding the element ? to the right most or left most ?
if i have for example :

here [ ] --> [ ] --> [ ] --> [ ] -->[ ] or here

linked list its FIFO so the head will be the right most ?

Edit : its confused me a little bit but i understood now .so it will be at the left most. its actually ordered . not like the stack which is LIFO.

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I have a problem with a linked list iterator, my problem is implementing the iterator.remove method given the following code:

package mapsql.util;
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private class Node implements Position<T> {
T element;
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[Code] ....

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I have to write a test class for a Contacts class called ContactTest and store the instances of Contacts created into a LinkedList.The ContactTest class should implement the addition andremoval of contacts to the Linked List and display its contents.

So far I have this, which stores the information entered into a Linked List, the problem is I don't know how I go about doing the addition and removal part.

Contacts Class

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String fname;
String lname;
String phone;
String email;
//constructors
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[Code] ....

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I understand what needs to be done, but I am having a difficult time actually writing the code. I added the main method to check to see if my code works, and it doesn't seem like that is even being read.It compiles without error - it only gives a warning of unchecked or unsafe operations.

Code:

package dataStructures;
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[code]...

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public class GetIndex {
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int index = 0;
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[Code] .....

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[code]....

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[code]....

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[code]....

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[code]....

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[Code] .....

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[Code]...

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[code]....

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