class Solution { public: { int first UniqChar(string unordered_map m; return -1;
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- class Polynomial: class TermNode:def __init__(self, coefficient: int, exponent: int) -> None:"""Initialize this node to represent a polynomial term with thegiven coefficient and exponent. Raise ValueError if the coefficent is 0 or if the exponentis negative."""if coefficient == 0:raise ValueError("TermNode: zero coefficient")if exponent < 0:raise ValueError("TermNode: negative exponent") self.coeff = coefficientself.exp = exponentself.next = None def __init__(self, coefficient: int = None, exponent: int = 0) -> None:"""Initialize this Polynomial with a single term constructed from thecoefficient and exponent. If one argument is given, the term is a constant coefficient(the exponent is 0).If no arguments are given, the Polynomial has no terms. # Polynomial with no terms:>>> p = Polynomial()>>> print(p._head)None>>> print(p._tail)None # Polynomial with one term (a constant):>>> p = Polynomial(12)>>> p._head.coeff12>>>…1. Create a class which implements the Set interface. 2. Create methods for intersection, difference, subset and disjoint. public interface Set{ public static final int max=10; public void add(int num); public void display(); public Set union(Set s); public Set intersection(Set s); public Set difference(Set s); public boolean subset(Set s); public boolean disjoint(Set s); public int cardinality();}import java.util.HashSet; import java.util.Set; // Define a class named LinearSearchSet public class LinearSearchSet { // Define a method named linearSearch that takes in a Set and an integer target // as parameters public static boolean linearSearch(Set<Integer> set, int target) { // Iterate over all elements in the Set for () { // Check if the current value is equal to the target if () { // If so, return true } } // If the target was not found, return false } // Define the main method public static void main(String[] args) { // Create a HashSet of integers and populate integer values Set<Integer> numbers = new HashSet<>(); // Define the target to search for numbers.add(3); numbers.add(6); numbers.add(2); numbers.add(9); numbers.add(11); // Call the linearSearch method with the set…
- In C++, declare a map <int,Student> to store serial number and student object. Student class contain id, name and cgpa. Print all map data.Add unit testing to the textanalyzer class. Please perform this task using JUnit. import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Set; import java.io.*; public class TextAnalyzer { public static void main(String[] args) throws Exception { String Word; URL poem = new URL("https://www.gutenberg.org/files/1065/1065-h/1065-h.htm"); BufferedReader in = new BufferedReader( new InputStreamReader(poem.openStream())); Map map = new HashMap(); while ((Word = in.readLine()) != null) { String[] words = Word.split("[\\s.;,?:!()\"]+"); for (String word : words) { word = word.trim(); if (word.length() > 0) { if (map.containsKey(word)) { map.put(word, map.get(word) + 1); } else { map.put(word, (int) 1L); } } } } // retrieving the map contents Set> set = map.entrySet(); // make an array list List> sortedList = new…Implement a LinkedList class that stores integers using dynamic memory and a proper main program to test it. The following member functions need to be properly implemented and tested: 1. Default constructor. 2. Parmetrized Constructor. 3. Sum. 4. Average. 5. InsertAtHead. 6. InsertAtTail. 7. Delete. 8. Pop. 9. Circular. 10. Display. Sample answer is also provided.
- import java.util.HashMap; import java.util.Map; public class LinearSearchMap { // Define a method that takes in a map and a target value as parameters public static boolean linearSearch(Map<String, Integer> map, int target) { // Iterate through each entry in the map for () { // Check if the value of the current entry is equal to the target if () { // If the value is equal to the target, return true } } // If no entry with the target value is found, return false } public static void main(String[] args) { // Create a HashMap of strings and integers Map<String, Integer> numbers = new HashMap<>(); // Populate the HashMap with key-value pairs numbers.put("One", 1); numbers.put("Two", 2); numbers.put("Three", 3); numbers.put("Four", 4); numbers.put("Five", 5); // Set the target value to search for…Here you can find the java code and photo of challenge: import java.io.*;import java.math.*;import java.security.*;import java.text.*;import java.util.*;import java.util.concurrent.*;import java.util.function.*;import java.util.regex.*;import java.util.stream.*; public class Solution { public static class DirectedGraph {/* Adjacency List representation of the given graph */private Map<Integer, List<Integer>> adjList = new HashMap<Integer, List<Integer>>(); public String toString() {StringBuffer s = new StringBuffer();for (Integer v : adjList.keySet())s.append("\n " + v + " -> " + adjList.get(v));return s.toString();} public void add(Integer vertex) {if (adjList.containsKey(vertex))return;adjList.put(vertex, new ArrayList<Integer>());} public void add(Integer source, Integer dest) {add(source);add(dest);adjList.get(source).add(dest);} /* Indegree of each vertex as a Map<Vertex, IndegreeValue> */public Map<Integer, Integer> inDegree()…Implement a member method for the List ADT called removeDuplicates(). The method removes every duplicate from the list such that there is only ONE copy of each element in the list. The method also returns the number of copies it removed. For example, if L = {Joe, Bob, Joe, Ned, Bob, Ron, Ron}, a call to L.removeDuplicates modifies the list such that L = {Joe, Bob, Ned, Ron} and returns 3. import java.util.Iterator;import java.util.NoSuchElementException; public class Mock1ListWrapper { public static interface List<E> extends Iterable<E> { public int size(); public boolean isEmpty(); public boolean isMember(E e); public int firstIndexOf(E e); public int lastIndexOf(E e); public void add(E e); public void add(E e, int position); public E get(int position); public E remove(int position); public E replace(int position, E newElement); public void clear(); public Object[] toArray(); public int removeDuplicates(); } @SuppressWarnings("unchecked") public static…
- Define the rule echo(LST0, LST1). This rule describes LST1, which holds all the same elements as LST0, except that they are all repeated. You should expect LST0 and LST1 to always be nonempty lists. Please answer in GNU prologComputer Science 1. Write a generic method named array_prod() that takes an array of a generic type are returns the product of the values in the elements in the array. Make sure that the generic type extends the Number class. The Number class is defined in the java.lang package. 2. Complete the main() method to find the products of the elements in the provided arrays. Print the results in the main method using 3 decimals.Modify the generic Pair.java class in two ways: Make it so that both values have the same type Add a method swap that swaps the first and second elements of the pair Examples:Pair<Integer> intPair = new Pair<>(17, 19);intPair.getFirst(); // returns 17intPair.getSecond(); // returns 19intPair.swap();intPair.getFirst(); // returns 19intPair.getSecond(); // returns 17Pair<String> strPair = new Pair<>("Erick", "Valdez");strPair.getFirst(); // returns "Erick"strPair.getSecond(); // returns "Valdez"strPair.swap();strPair.getFirst(); // returns "Valdez"strPair.getSecond(); // returns "Erick" Pair.java /*** This class collects a pair of elements of different types.*/public class Pair<T, S> {private T first;private S second;/*** Constructs a pair containing two given elements.* * @param firstElement the first element* @param secondElement the second element*/public Pair(T firstElement, S secondElement) {first = firstElement;second = secondElement;}/*** Gets…