Answered step by step
Verified Expert Solution
Link Copied!

Question

1 Approved Answer

JAVA LANGUAGE Write a program that reads a list of students (first names only) from a file. It is possible for the names to be

JAVA LANGUAGE Write a program that reads a list of students (first names only) from a file. It is possible for the names to be in unsorted order in the file but they have to be placed in sorted order within the linked list.

The program should use a doubly linked list.

Each node in the doubly linked list should have the students name, a pointer to the next student, and a pointer to the previous student.

When inserting consider all the following conditions:

if(!head){ //no other nodes

}else if (strcmp(data, head->name)<0){ //smaller than head

}else if (strcmp(data, tail->name)>0){ //larger than tail

}else{ //somewhere in the middle

}

When deleting a student consider all the following conditions:

student may be at the head, the tail or in the middle

Below, you will find a sample of what the file looks like. Notice the names are in unsorted order but the information placed in the linked list is in sorted order. The name of the file should be input.txt.

In the text file, the word delete followed by a name, should delete the node with that specific students name from the doubly linked list. If the name is not found, then nothing is deleted.

(NOTE: The above visual represents only the first three lines from the text file below.)

Jim

jill

John

delete jill

Bob

Jack

delete jim

At the end of the program, traverse through the contents of the linked list in both ascending and descending order, using the doubly linked list, and write the contents into the file output.txt. For example, given the above list, here is the sample display:

Bob

Jack

John

=============

John

Jack

Bob

Step by Step Solution

There are 3 Steps involved in it

Step: 1

blur-text-image

Get Instant Access to Expert-Tailored Solutions

See step-by-step solutions with expert insights and AI powered tools for academic success

Step: 2

blur-text-image

Step: 3

blur-text-image

Ace Your Homework with AI

Get the answers you need in no time with our AI-driven, step-by-step assistance

Get Started

Recommended Textbook for

Advanced Database Systems

Authors: Carlo Zaniolo, Stefano Ceri, Christos Faloutsos, Richard T. Snodgrass, V.S. Subrahmanian, Roberto Zicari

1st Edition

155860443X, 978-1558604438

More Books

Students also viewed these Databases questions

Question

Write the difference between sexual and asexual reproduction.

Answered: 1 week ago

Question

What your favourite topic in mathematics?

Answered: 1 week ago

Question

Briefly describe vegetative reproduction in plants.

Answered: 1 week ago