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- Write a JAVA program that will maintain a phone directory using a Linked-List. The program should be able to perform the following operations: Add persons details (first name, last name, phone number, city, address, sex and email) to the phone directory, where phone numbers in the directory have to be unique. (Note: each person record will store in one node in the linked-list and insert each person to the last) Delete any person details by a given phone number. Update telephone number by providing person first name. Display all details of persons from a phone directory. Search telephone number based on person first name. (Note: use sequential search to find all telephones for the given first name) Sort all persons in the phone directory ascending based on person first name. (Note: use bubble or selection sort to arrange the entire phone directory)Write a Java program that creates and maintains a binary search tree (BST) whose nodes are student records. Each student record (BST node) contains the student's id (String), name (String) and GPA (float). Use the student id as a key for the BST. The program starts with an empty BST and offers the following menu options to the user repeatedly until the user selects the 'Q' option (quit). A: Add a new student record to the BST. Here the user is prompted to enter the new student’s id, name and GPA. The program should display an error message if the student id already exists in the BST. F: Find a student record. Here the user is prompted to enter the id of the student to be searched. If found the program displays the student id, name and GPA, otherwise the program displays an error message. D: Delete a student record. Here the user is prompted to enter the id of the student record to be deleted. The program should display an error message if the student id is not found in the BST. P:…Write a JAVA program that will maintain a phone directory using a Linked-List. The program should be able to perform the following operations: 1) Add persons details (first name, last name, phone number, city, address, sex and email) to the phone directory, where phone numbers in the directory have to be unique. (Note: each person record will store in one node in the linked-list and insert each person to the last) 2) Delete any person details by a given phone number. 3) Update telephone number by providing person first name. 4) Display all details of persons from a phone directory. 5) Search telephone number based on person first name. (Note: use sequential search to find all telephones for the given first name) 6) Sort all persons in the phone directory ascending based on person first name. (Note: use bubble or selection sort to arrange the entire phone directory) Project Outputs The output has to display a menu of choices. Then the user can select which operation want to perform.…
- Implement the following linkedlist using C program. Sample Input : Generate the linkedlistwith Sam, Paul, Henry, Alan. Sort the linkedlist in ascendingorder as follows and yourstart pointer is Alan. Delete Henry from the abovelinkedlist and add Bill gates and your final linkedlistwillbewithnodesAlan, Bill Gates, Henry, Paul and Sam.Create a Java programme to test the HuffmanTree class. a.The programme will need to read a text file and create a frequency table for the characters that appear in it. After the table has been constructed, make a Huffman code tree and a string representing the code string for that file that consists of digits '0' and '1'. After that, read that string back in, create a new file with the original contents, and output it.READ THE PROBLEM AND USE PYTHON PROGRAMMING LANGUAGE!!In this problem, you are going to implement a filesystem using a tree data structure. Similar to a filesystem, each node (or file), may have multiple children. If the specified path does not exist, then you should disregard that file. Once you are done adding elements to the filesystem, you should print the directory structure in the specified format. Required modifications: 1. Insertion of a new element 2. Printing of the directory from the root node. 3. Parsing of the input. Input Format First line is the name of the root directory. Second line, n, is the number of subdirectories that follows. For each line that follows, it shows the following format: Filename-root node,next path,next path,... Constraints You may assume that the filenames are all alphabetical characters with no special characters. n < 100 The maximum path length is 20 (including the root directory). You may assume that there are no similar…
- Implement a city database using ordered lists by using java. Each database record contains the name of the city (a string of arbitrary length) and the coordinates of the city expressed as integer x and y coordinates. Your database should allow records to be inserted, deleted by name, and searched by name. Another operation that should be supported is to print all records within a given distance of a specified point/coordinate. The order of cities should be alphabetically by city name. Implement the database using both: an arraybased list implementation, and a circular single linked list implementation.Use may the following node, SLL implementations to implement an ordered circular single linked liston c++ visual studio: for queue implementation: Enqueue some numbers, then dequeue them, later enqueue some others as well. Finally, keep on dequeueing until the queue is empty. You should be printing out every operation of enqueue or dequeue: Ex: Enqueueing 8... Dequeueing 8... Enqueueing 14.... Enqueueing 20.... Dequeueing 14.... Dequeueing 20.... Queue is empty.Write a C program for a library automation which gets the ISBN number, name,author and publication year of the books in the library. The status will be filled by theprogram as follows: if publication year before 1985 the status is reference else status isavailable. The information about the books should be stored inside a linked list. The programshould have a menu and the user inserts, displays, and deletes the elements from the menu byselecting options. The following data structure should be used.struct list{ char ISBN[ 20 ];char NAME[ 20 ];char AUTHOR[ 20 ];int YEAR;char STATUS[20];struct list *next;}INFO;The following menu should be used in the program.Press 1. to insert a bookPress 2. to display the book listPress 3. to delete a book from listHint: use strcpy to fill STATUS.
- There is a bag-like data structure, supporting two operations: 1 x1 x: Throw an element xx into the bag. 22: Take out an element from the bag. Given a sequence of operations with return values, you’re going to guess the data structure. It is a stack (Last-In, First-Out), a queue (First-In, First-Out), a priority-queue (Always take out larger elements first) or something else that you can hardly imagine! Input There are several test cases. Each test case begins with a line containing a single integer nn (1≤n≤10001≤n≤1000). Each of the next nn lines is either a type-1 command, or an integer 22 followed by an integer xx. This means that executing the type-2 command returned the element xx. The value of xx is always a positive integer not larger than 100100. The input is terminated by end-of-file (EOF). The size of input file does not exceed 1MB. Output For each test case, output one of the following: stackIt’s definitely a stack. queueIt’s definitely a queue. priority queueIt’s definitely…In Javascript an array can be treated like a queue---a FIFO (first-in, first-out) data structure. Which two array operations that we studied in class can be used together to treat an array as a queue? a. isEmpty() and isFull() b. queue() and unqueue() c. unshift() and pop() d. push() and pop() e. unshift() and shift()With a given binary search tree, you are asked to save the key of all the nodes into a file, then read the values one by one sequentially from the saved file and build a binary search tree that exactly replicates the original binary search tree. Describe how you would do it and give an example of 5 nodes.