Objective: This activity has the purpose of helping students to design proper hashing strategies. (Objective 3). Students Instructions: After studying this module, write the answer to the following programming assignments in a text file and submit them as an attached Word doc or PDF through the provided link in Blackboard. The deadline for submitting this assignment is indicated on Tools", which is located in "Calendar" in the "Blackboard" platform. You will have two (2) attempt to send your answers by Assignment link before the deadline and the last submission would be considered as your final solution. This exercise has Implement a dictionary by using hashing and separate chaining.Question:

Objective: This activity has the purpose of helping students to design proper hashing strategies. (Objective 3). Students Instructions: After studying this module, write the answer to the following programming assignments in a text file and submit them as an attached Word doc or PDF through the provided link in Blackboard. The deadline for submitting this assignment is indicated on Tools", which is located in "Calendar" in the "Blackboard" platform. You will have two (2) attempt to send your answers by Assignment link before the deadline and the last submission would be considered as your final solution. This exercise has Implement a dictionary by using hashing and separate chaining.Question:

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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One common use of a hash table is to build a glossary, or dictionary, of terms.In this section, we demonstrate one way to use a hash table for just such ause—a computer terms glossary.The program works by first reading in a set of terms and definitions from atext file. This process is coded in the BuildGlossary subroutine. The structureof the text file is: word,definition, with the comma being the delimiter betweena word and the definition. Each word in this glossary is a single word, but theglossary could easily work with phrases instead. That’s why a comma is usedas the delimiter, rather than a space. Also, this structure allows us to use theword as the key, which is the proper way to build this hash table.Another subroutine, DisplayWords, displays the words in a list box so theuser can pick one to get a definition. Since the words are the keys, we can usethe Keys method to return just the words from the hash table. The user canthen see which words have definitions.To retrieve a…
Consider records for patients at a medical facility. Each record contains an integer identification for a patient and strings for the date, the reason for the visit, and the treatment prescribed. Design and implement the class PatientRecord so that it overrides the method hashCode. Write a program that tests your new class. Design a class PatientDataBase that stores instances of PatientRecord, as described above. The class should provide at least three query operations, as follows. Given a patient identification and date, the first operation should return the reason for the visit, and the second operation should return the treatment. The third query operation should return a list of dates, given a patient identification.
Consider records for patients at a medical facility. Each record contains an integer identification for a patient and strings for the date, the reason for the visit, and the treatment prescribed. Design and implement the class PatientRecord so that it overrides the method hashCode. Write a program that tests your new class. Design a class PatientDataBase that stores instances of PatientRecord, as described above. The class should provide at least three query operations, as follows. Given a patient identification and date, the first operation should return the reason for the visit, and the second operation should return the treatment. The third query operation should return a list of dates, given a patient identification. Implement the class PatientDataBase. Using a hash table to store the patient records. Write a program that demonstrates and tests this class. JAVA PROGRAM
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for (String name : likedBy) { String likedUser= name.trim(); Set<String> likes = likesMap.getOrDefault(likedUser, new HashSet<>()); Here you create a new Set for likes. This is in the iteration over the likers though so it results in many missing entries. [ How do i Fix this ] import java.io.BufferedReader; import java.io.FileReader; import java.io.IOException; import java.util.ArrayList; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Set; public class FacebookLikeManager { private Map<String, Set<String>> likesMap; public FacebookLikeManager() { likesMap = new HashMap<>(); } public void buildMap(String filePath) { try (BufferedReader reader = new BufferedReader(new FileReader(filePath))) { String line = reader.readLine(); while (line != null) { String[]…
you will create a spell checker. The program will take three command line arguments: number of words in the dictionary, a dictionary file name, and a text file name. The program will first create a hash table. The number buckets of the hash table should be about twice the number of words in the dictionary. Then, it will read the dictionary from the file, insert the words into the hash table, and report collision statistics. After reading the dictionary, the spelling checker will read a list of words from a text file. Each word will be looked up in the dictionary. If it is incorrect, it will be written to the standard output together with a list of suggested corrections. The algorithm for generating corrections is given below. Hash Table The hash table programs, QuadraticProbing.h and QuadraticProbing.cpp, are posted on Canvas. The programs use quadratic probing to deal with collisions. You should carefully study these programs and make some changes to collect the required statistics.…
you will create a spell checker. The program will take three command line arguments: number of words in the dictionary, a dictionary file name, and a text file name. The program will first create a hash table. The number buckets of the hash table should be about twice the number of words in the dictionary. Then, it will read the dictionary from the file, insert the words into the hash table, and report collision statistics. After reading the dictionary, the spelling checker will read a list of words from a text file. Each word will be looked up in the dictionary. If it is incorrect, it will be written to the standard output together with a list of suggested corrections. The algorithm for generating corrections is given below. Hash Table The hash table programs, QuadraticProbing.h and QuadraticProbing.cpp, are posted on Canvas. The programs use quadratic probing to deal with collisions. You should carefully study these programs and make some changes to collect the required statistics.…