30. In the implementation for a breadth-first search we studied, a queue was used. The code below replacesthe queue with a stack. List the pre-order enumeration that the vertices in the graph below are visitedusing this modified method, starting from vertex 0.}3/** stack-based search */static void modSearch (Graph G, int start) {Stack S new AStack (G.n());S.push(start);}6G.setMark (start, VISITED);while (S.length) > 0) {}modSearch:intv S.pop();PreVisit (G, v);for (int w = G.first (v); w < G.n(); w = G.next(v, w))if (G.getMark (w) == UNVISITED) {G.setMark (w, VISITED);S.push(w);

When traversing a graph, the usual approach for breadth-first search (BFS) involves utilizing a…

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Please help with the program below. Need to write a program called dfs-stack.py in python that uses the algorithm below without an agency list but instead uses an adjacency matrix. The program should prompt the user for the number of vertices V, in the graph.Please read the directions below I will post a picture of the instructions and the algorithm.
Create a class Stack. This stack will be implemented using the LinkedList class that has been provided. This stack will hold values of a generic type (<T>). Your Stack should have the following public methods: public void push(int n) public T pop() public T peek() public T size() public boolean isEmpty() public class LinkedList <T> { private Node head; private Node tail; private int size; public LinkedList() { head = null; tail = null; size = 0; } public void append(T data) { Node newNode = new Node(data); if (head == null) { head = newNode; } else { tail.next = newNode; } tail = newNode; size++; } public void prepend(T data) { Node newNode = new Node(data); if (head == null) { head = newNode; tail = newNode; } else { newNode.next = head; head = newNode; } size++; } public T getHead() { return head.data; } public T getTail() { return tail.data; } public int size() { return size; } public void removeByValue(T data) { Node current = head; while…
PP 12.4 The array implementation in this chapter keeps the top variablepointing to the next array position above the actual top of thestack. Rewrite the array implementation such that stack[top] isthe actual top of the stack. PP 12.5 There is a data structure called a drop-out stack that behaves likea stack in every respect except that if the stack size is n, whenthe n + 1 element is pushed, the first element is lost. Implement adrop-out stack using an array. (Hint: A circular array implementation would make sense.)
In java how do you: Delete the lowest/smallest item from the Circular Linked List (provided the list is sorted in ascending order) Reverse a Stack S, using a Queue Q Add the top 2 elements of a Stack S. Return the addition and push the data back in the stack S. How to reverse a Queue using a Stack? How to reverse a Queue using an array?
public ArrayList<Integer> depthFirstTraversal(int[][] adjacency_matrix, int source){//A matrix and a source index is passed in//The traversal will be performed on this matrix and begin from the source index //Stack is created//This stack will be used to process nodes in LIFO order when an unvisited node is foundStack<Integer> stack = new Stack<>();int numNodes = adjacency_matrix.length; //boolean array is created//This array will have a slot for each node//Whenever an unvisited node is visited it's slot in this array will be markedboolean[] visited = new boolean[numNodes]; //This variable will hold the index of the element currently being analyzedint element; //The result of the traversal will be stored in this arraylistArrayList<Integer> traversal = new ArrayList<Integer>(); //Since the source index is passed in it has already been visitedvisited[source] = true; //The source index is added to the queue to continue processing itstack.push(source); while…
The ADT stack lets you peek at its top entry without removing it. For some applications of stacks, you also need to peek at the entry beneath the top entry without removing it. We will call such an operation peek2. If the stack has more than one entry, peek2 returns the second entry from the top without altering the stack. If the stack has fewer than two entries, peek2 throws an exception. Write a linked implementation of a stack class call First_Last_LinkStack.java that includes a method peek2
In Java and in C++ the best way to implement a Stack is by deriving from any implementation of the ADT List. For instance: class Queue : public DoublelinkedList { }; True False
There is a data structure called a drop-out stack that behaveslike a stack in every respect except that if the stack size is n,then when the n+1 element is pushed, the first element is lost.Implement a drop-out stack using links
Java Algorithm Programming Question Implement the ADT queue by using a circular linked list. Recall that this list has only an external reference to its last note. Example Output: Create a queue: isEmpty () returns true Add to queue to get Joe Jess Jim Jill Jane Jerry isEmpty () returns false Testing getFront and dequeue: Joe is at the front of the queue. Joe is removed from the front of the queue. Jess is at the front of the queue. Jess is removed from the front of the queue. Jim is at the front of the queue. Jim is removed from the front of the queue. Jill is at the front of the queue. Jill is removed from the front of the queue. Jane is at the front of the queue. Jane is removed from the front of the queue. Jerry is at the front of the queue. Jerry is removed from the front of the queue. The queue should be empty: isEmpty() returns true Add to queue to get Joe Jess Jim Testing clear: isEmpty() returns true Add to queue to get Joe Jess Jim Joe is at the front of the queue. Joe is…
Simple JAVA linkedlist code implementation please help and complete any part you can - Without using the java collections interface (ie do not import java.util.List,LinkedList, Stack, Queue...)- Create an implementation of LinkedList interface- For the implementation create a tester to verify the implementation of thatdata structure performs as expected Build Bus Route – Linked List- Your task is to:o Implement the LinkedList interface (fill out the implementation shell)o Put your implementation through its paces by exercising each of themethods in the test harnesso Create a client (a class with a main) ‘BusClient’ which builds a busroute by performing the following operations on your linked list:o§ Create (insert) 4 stations§ List the stations§ Check if a station is in the list (print result)• Check for a station that exists, and onethat doesn’t§ Remove a station§ List the stations§ Add a station before another station§ List the stations§ Add a station after another station§ Print the…