Answered: Which of the following is most likely a…

Which of the following is most likely a lambda body we would use to define a Comparator? A. y - y%2 == 0 B. () -> myArrayList.get(0) C. (a, b) -> a.getID() - b.getID() D. x > State::set Population

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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Create a function that restores the frequency of distribution of the same members. This function should return the object, where the keys are unique and the values are the frequency at which those elements occur. Examples getFrequencies (["A", "B", "A", "A", "A"]) → {A: 4, B: 1} getFrequencies ([1, 2, 3, 3, 2]) {"1": 1, "2": 2, "3": 2} please provide the solution in java script
Create a function that restores the frequency of distribution of the same members. This function should return the object, where the keys are unique and the values are the frequency at which those elements occur. Examples get Frequencies (["A", "B", "A", "A", "A"]) → {A: 4, B: 1} get Frequencies ([1, 2, 3, 3, 2]) {"1": 1, "2": 2, "3": 2} ([true, false, true, false, false]) {} get Frequencies get Frequencies ([]) Solve with Java Script → → {true: 2, false: 3}
Maze Runner Function - Implementation of this function is done in a1_partd.py We describe a maze as having row x col cells. For example if row was 3, and col was 4, then we would have a grid of cells as follows. We describe a wall by the two cell numbers the wall separates. If every single wall existed, there would be (row-1)(col) + (col-1)(row) walls. 0 | 1 | 2 | 3 4 | 5 | 6 | 7 8 | 9 | 10 | 11 A Maze class (which you do not need to implement) describes a maze as mentioned above. This class is defined in maze.py. It has methods that you can use to travel through the maze (i.e. figure out where you are, find a neighbour cell etc.) use a recursive maze runner function: def find_path(maze, from_cell, to_cell); The find_path function will find a path from cell number from_cell to cell number to_cell and will return it as a list containing all the cell numbers along the path, from the from_cell to the to_cell. You are allowed to use this function as a wrapper to a recursive function that…
In C++, can I get a code example for a function that will return the intersection items for two sets. It will return/print out the shared (intersection) items for them. I am looking for an actual function preferably for a set class, comparing one instance of a set class with another, but definitely NOT a STL keyword. Thank you.
Create a set-based implementation of an abstract data type with the following operations. insert(S, x) Insert x into the set S. delete(S, x) Delete x fromthe set S. member(S, x) Return true if x ∈ S, false otherwise. position(S, x) Return the number of elements of S less than x. concatenate(S, T) Set S to the union of S and T, assuming every element in S is smaller than every element of T. All operations on sets with n elements must finish in O(log n) time.
Can anyone please solve this question asap ? Thank yoyuIn this question, you are required to implement singly linked list and its concepts to solve the problems of a departmental store described in the scenario given below:A departmental store has a variety of products to sell. Each product type has a unique ID and price associated with it (for example soaps can have an ID of 1 and price of 50 etc.). A customer comes to the store and starts putting items in his/her shopping cart. Once all theitems have been placed in the shopping cart, the customer then proceeds to checkout but before that, he/she will sort (in ascending order of IDs) the shopping cart’s items and proceed to remove all the duplicate items from the shopping cart, that is if two soaps have been added to the cart, only 1 will be kept. At the checkout counter, he/she will then remove items from the cart by removing from the end of the shopping cart (linked list). A bill for that customer is then generated and printed.You…
Consider the implementation of unorderedLinkedList class, which statement is correct about the following member function: template void unorderedLinkedList::mystery(const Type& x){ nodeType *newNode; newNode = new nodeType3; newNode->info = x; newNode->link = first; first = newNode; count++; if (last == NULL) last = newNode; Your answer: O The function mystery inserts item x to the end of the list The function mystery deletes item x from the list. The function mystery inserts item x to the front of the list The function mystery searches item x in the list
Create a Vector2D class with properties x and y and a proper constructor method. Plus, minus and multiplication with a scalar operators should be overloaded. Create a Body class with properties of pos, vel, mass and constructor(float Mass, Vector2D Pos, Vector2D Vel), addForce(Vector2D F) and Move(float dt) methods. Your program should create an array or collection of Bodies, at each time step (dt), calculate forces that bodies exert each other and apply accordingly. Finally, in a 2D space, bodies should move freely based on their properties and applied forces. You can use option buttons or another element to represent bodies and move them inside the form.
If you have a generic class : public class Search<A, B> how can you find all the occurences of B in the search
Part 1: Without using generics 1. Define the interface NumFilter. The interface has a single method named predicate that takes one Integer argument and returns a boolean value. interface NumFilter { boolean predicate (Integer n); } A typical implementation of the predicate method would be as follows: - returns true if the integer n satisfy the condition of the filter - else returns false.
IN C LANGUAGE I HAD AN ERROR. URGENT!! struct Graph* createGraph(int V, int E){ struct Graph* graph = new Graph; graph->V = V; graph->E = E; graph->edge = new Edge[E]; return graph;} // A structure to represent a subset for union-findstruct subset { int parent; int rank;}; // A utility function to find set of an element i// (uses path compression technique)int find(struct subset subsets[], int i){ // find root and make root as parent of i // (path compression) if (subsets[i].parent != i) subsets[i].parent = find(subsets, subsets[i].parent); return subsets[i].parent;} // A function that does the union of two sets of x and yvoid Union(struct subset subsets[], int x, int y){ int xroot = find(subsets, x); int yroot = find(subsets, y); // Attach smaller rank tree under root of high // rank tree (Union by Rank) if…
In this chapter, the class to implement the nodes of a linked list is defined as a struct . The following rewrites the definition of the struct nodeType so that it is declared as a class and the member variables are private. template <class Type> class nodeType{ public: const nodeType<Type>& operator=(const nodeType<Type>&); //Overload the assignment operator. void setInfo(const Type& elem); //Function to set the info of the node. //Postcondition: info = elem; Type getInfo() const; //Function to return the info of the node. //Postcondition: The value of info is returned. void setLink(nodeType<Type> *ptr); //Function to set the link of the node. //Postcondition: link = ptr; nodeType<Type>* getLink() const; //Function to return the link of the node. //Postcondition: The value of link is returned. nodeType(); //Default constructor //Postcondition: link = nullptr;…