You need a pre-written data structure that handles key/value pairs. What data structure should you use? a. java.util.KeyValuePairs b. java.util.HashMap c. java.Keys d. java.Maps
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- Help with this java question: Map<KeyType, ValueType> mapName = new HashMap<>();Use java Write a Java program using Bluej to display the courses names like Algorithm, Artificial Intelligence, Data Structures, and Object Oriented programming using HashSet. List the course names in the print method, which does not return the results. Show the Hashset maintain any specific order if any.Q. List main Features of hashmap in java?
- You've been provided a software that purports to use hash coding to handle a collection of objects. If an item is present, the software should return its address, or if the item is not in the collection, it should return the location where it should be added. A manual that comes with the software describes criteria such as the intended format of table objects, table height, and the basic calling series. You just have the program's object code, not the source code. Make a list of the scenarios you'd need to check the program's functionality.After modify the following code please split which part will be main.java file and which part will be hashtableclass.java file? Because I will use main.java IDE. Please don't copy previous solution. That was not correct. Modify the given programs by adding two methods in HashTableClass: Show Full code with output. Find and return the item with the maximum key; Find and return average of the keys in the hash table. import java.util.*;public class hashTableClass { public int tableSize; Node[] T; public hashTableClass() { System.out.println("Give the hash table size"); tableSize = Integer.parseInt(new Scanner(System.in).nextLine()); T = new Node[tableSize]; for (int i = 0; i < tableSize; i++) T[i] = null; } public int hashFunction(int Key) { return Key % tableSize; } public Node Search(int Key) { int h = hashFunction(Key); Node current = T[h]; while (current != null &&…#include<iostream> #include<cstdlib> #include<string> #include<cstdio> using namespace std; const int TABLE_SIZE = 128; /* * HashEntry Class Declaration */ class HashEntry { public: int key; int value; HashEntry(int key, int value) { this->key = key; this->value = value; } }; /* * HashMap Class Declaration */ class HashMap { private: HashEntry **table; public: HashMap() { table = new HashEntry * [TABLE_SIZE]; for (int i = 0; i< TABLE_SIZE; i++) { table[i] = NULL; } } /* * Hash Function */ int HashFunc(int key) { return key % TABLE_SIZE; } /* * Insert Element at a key */ void Insert(int key, int value) { int hash = HashFunc(key); while (table[hash] != NULL && table[hash]->key != key)…
- #include<iostream> #include<cstdlib> #include<string> #include<cstdio> using namespace std; const int TABLE_SIZE = 128; /* * HashEntry Class Declaration */ class HashEntry { public: int key; int value; HashEntry(int key, int value) { this->key = key; this->value = value; } }; /* * HashMap Class Declaration */ class HashMap { private: HashEntry **table; public: HashMap() { table = new HashEntry * [TABLE_SIZE]; for (int i = 0; i< TABLE_SIZE; i++) { table[i] = NULL; } } /* * Hash Function */ int HashFunc(int key) { return key % TABLE_SIZE; } /* * Insert Element at a key */ void Insert(int key, int value) { int hash = HashFunc(key); while (table[hash] != NULL && table[hash]->key != key)…Create an interactive system that allows a user to add and delete workers, with each employee having a six-digit employee id, a name, and years of service. As your hashing algorithm, use the Integer class's hashcode method and one of the Java Collections API hashing implementations.Java Programming: There are lots of errors in this code. Please help me fix them. Attached is images of what the code must have and circled the errors in the code. Interpreter.java public class Interpreter { private HashMap<String, Object> variables; public void interpretFunction(FunctionNode fn) { // Create a hash map for local variables variables = new HashMap<String, Object>(); for(Node constantNode : fn.getConstants()) { Object constant = constantNode.getValue(); variables.put(constantNode.getName(), constant); } for(Node localVarNode : fn.getVariables()) { Object localVar = null; variables.put(localVarNode.getName(), localVar); } interpretBlock(fn.getStatements(), variables); } public void interpretBlock(List<StatementNode> statementNodes, HashMap<String, Object> variables) { for(StatementNode statement : statementNodes) {…
- You are writing an application for the 911 dispacher office for a city. You need a data structure that will allow you to store all the residents' phone numbers and addresses. The common operations performed on the set of objects are: lookup an address based on the calling phone number. The client wants the program to be as efficient as possible. Which of the following data structures should you use in your design? Question 43 options: Hash table Binary search tree Heap Sorted linked Listfor (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[]…Without using the built in java hash table Write a Java program to get input from the keyboard to enter an integer.Write a hash function to hash the integer.Store the integer in a DataItem object.Create a hash table to store the DataItem in the hash table at the hashed location.Write a function to search a hash function for an integer value and display it from the DataItemobject at the hashed location