Which of the following are necessary parts of all recursive methods?A tail call.Tail-call optimization.}Backtracking.One or more base cases.One or more recursive calls.Select all true statements about the method below:private static int sumEveryThird (int sum, int num) {if(num== 0) {return sum;}else {}return sumEveryThird (sum + num, num-3);The method may cause Stack Overflow error on some inputs.The method contains one base case and one recursive call.The method is recursive.The method has a tail call.The method will always cause Stack Overflow error.Consider the following problem:Maximum Potato HaulA square n x n grid represents a potato field, and each cell in this 'field" has an integer representing the number of potatoes in thatcell, or o if it there are none (cell is empty).Return the maximum number of potatoes you can collect under these conditions:• Every time you are located in a cell you will collect all the potatoes in that cell.• From your position, you can walk one step to the left, right, up, or down provided you stay on the grid.• You can't visit the same cell more than once.You can never visit a cell with o potatoes (empty cell).• You can start and stop collecting potatoes from any position in the grid that is not empty.You do not have to solve the Maximum Potato Haul problem (although it would make for great interviewpractice!) but you should recognize some features of it.Now select all true statements about this problem:The only way to solve this problem is to use recursion.There is a non-recursive solution to this problem.Since current location on the field/grid is a key element of the solution, using the data structure Map is helpful.This problem can be solved using recursion with backtracking.There is a O(n) solution to this problem where n is the number of potatoes on the grid.

Disclaimer: “Since you have asked multiple questions, we will answer the first question. If you want…

Answered: Which of the following are necessary…

Which of the following are necessary parts of all recursive methods? A tail call. Tail-call optimization. Backtracking. One or more base cases. One or more recursive calls.

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

See similar textbooks

Related questions

Q: In what instances do you think it’s impractical to use recursion over loops?

A: The question is in what instances it’s impractical to use recursion over loops.

Q: In Kotlin, Write a recursive function with an expression body that takes an Int n and returns a list…

A: Here, the task mentioned in the question is to write a Kotlin program to write a recursive function…

Q: Give some of the disadvantages of Recursion and how to overcome some of them? Give some example

A: Disadvantages of Recursion : recursive functions are slower hard to understand not efficient in…

Q: 1. Start with analysing the problem by using a flowchart/pseudo code. 2. As mention above, build a…

A: #include<conio.h> #include<iostream> #include<fstream> #include<Windows.h>…

Q: Where do you see the advantages of using tail recursion?

A: 1) Tail recursion is a programming technique where a function calls itself as its last action. The…

Q: I just need help filling in the final blank. (I’m not sure if it’s “n-c-1” or “n-c+1” or something…

A: Here ,we have given a method to compute n! For the factorial(n) , its first call for…

Q: Both Method 1: Tail Recursion & Method 2: Non-tail Recursion algorithms are being demonstrated as…

A: Yes, both the methods given in the previous question are same. This is not correctBelow am giving…

Q: Question 5 When writing a recursive method, O you do not need to know ahead of time exactly how many…

Q: Iterative FactorialWrite an iterative version (using a loop instead of recursion) of the factorial…

A: CODE:- #include <iostream>using namespace std;int factorial(int num);int main(){int n;cout…

Q: Draw a diagram showing the recursive calls and returns needed to calculate the value of com1(4).…

A: - This is a recursive function which returns the number if it's less than 2 else it does (n+1) -…

Q: Recursion is the best and the fastest way to solve any problem.True or False

A: Recursion is a problem-solving technique in which the solution is based on the outcomes to aspects…

Q: he odd one out? Select one: a. None of the options b. Direct recursion c. Circular recursion

A: Recursions are of two types 1.direct recursion 2.indirect recursion Direct recursion again…

Q: What exactly is the meaning of the term "ForkJoinTask"? How does RecursiveAction vary from…

A: What exactly is the meaning of the term "ForkJoinTask"? "ForkJoinTask" is a class in Java that…

Q: 8) What is wrong with the following recursive sum method? The method is supposed to sum up the…

A: Please find answer to the above question below:

Q: Can you explain what a ForkJoinTask is? Can you explain the variations between RecursiveAction and…

A: ForkJoinPool-specific base class for assignments. ForkJoinTasks are lightweight strings. Few genuine…

Q: a.) Explain what it means to use iteration instead of recursion. b.) Why are recursive programs…

A: Please find the detailed answer in the following steps.

Q: Is the recursive solution to the triangle number the best way to obtain the triangle number? A.…

A: Answer: Introduction: In simple language, we can say that recursion is one of the methods that will…

Q: acing the Recursion. Observe the recursive solution provided below and answer the following…

A: The code is implementing a binary search algorithm to search for a target element in a given sorted…

Q: Where do you see the advantages of using tail recursion?

A: Tail recursion is a technique used in programming to optimize recursive function calls, where the…

Q: Write a Program for Tower of Hanoi Problem Using Recursion Concept. (in Java)

A: Objective: A program should be written to display the activities performed in the Tower of Hanoi…

Q: Picking the middle value Can you think of a sequence of integers, such that picking the 'middle…

A: #include <bits/stdc++.h>using namespace std; int Josephus(int, int); int main(){ int n, k;…

Q: How is the repeated calling of a recursion function controlled? What kind of command and control…

A: In this question we need to explain ho repeated calling of a recursive function is controlled and…

Q: two differences between recursion and iteration

A: Recursion: Recursion is when a statement in a function calls itself repeatedly. Iteration:…

Q: write a recursive method to schedule compatible activities that result in the maximum usage of the…

A: Algorithm: We will first sort the activity array according to the stop time. Then we will apply…

Q: Non-recursive loop based approaches are frequently used to tackle recursive problems. Give an…

A: Self-calling techniques are used in recursive solutions, which run until the base case is reached.…

Q: Just what is meant by the term "ForkJoinTask"? When comparing RecursiveAction and RecursiveTask,…

A: Introduction: Assignments that execute within a ForkJoinPool have a special base class. A fork-join…

Q: Flip a fair coin repeatedly until you get two heads in a row (HH). What is the probability of…

A: To calculate the probability of getting two heads in a row (HH) in at most N tosses, we can use a…

Q: Explain the meaning of the recursion with a simple example

A: Recursion Recursion is the popular programming methodology used in many programming languages (such…

Q: How can you avoid creating an infinitely recursive method in Java?

A: In Java, recursion refers to a method calling itself to solve a problem. If not handled carefully,…

Q: Give examples of two functions that are not completely tail recursive but are almost tail recursive.…

A: In trаditiоnаl reсursiоn, the tyрiсаl mоdel is thаt yоu рerfоrm yоur reсursive саlls…

Q: Give a brief summary of three forms of recursion, each of which uses a different strategy to reach…

A: Recursion is a powerful concept in computer science and mathematics that involves a function…

Q: Define the term " recursion general case " .

A: General case is the case where recursion is made. In general class, recursion are made and at one…

Q: Explain the concept of recursion with the help of suitable example.

A: Recursion: When a function is called again and again by itself is called as recursion. It is of two…

Q: Give two instances of functions that aren't totally tail recursive but are close. Describe a general…

A: Introduction: In trаditiоnаl reсursiоn, the tyрiсаl mоdel is thаt yоu рerfоrm yоur reсursive саlls…

Q: Please explain Q# 1, A list operation that produces one summary item result is called Group of…

A: NOTE:- As per our policy we can solve only one question at a time. So, please repost the rest…

Q: racing the Recursion. Observe the recursive solution provided below and answer the following…

A: The given code is a Java implementation of a binary search algorithm. Binary search is a commonly…

Q: class Surprise: def mystery (self,n) : print ("h(" ,n,")") if (n==0): print ("value: 0") return 0…

A: class Surprise(): def mystery(self,n): print("hello")…

Q: What is the definition of "ForkJoinTask"? What significant differences can you identify between…

A: In Java, ForkJoinTask is an abstract class that represents a task that can be executed…

Concept explainers

Computational Systems

The computation systems can be defined as the systems that are capable of solving a problem that includes calculations either mathematical or logical, and are able to produce the result as an output. For example, a simple calculator that is given a set of numbers and operators as input and produces the result as an output can be defined as a computational system. The above example is a simple illustration only, the computational systems range from simple devices to complex devices such as the systems that control the SpaceX companies, Starlink satellites which are being quite recently seen in the skies at many places globally.

Question

Which of the following are necessary parts of all recursive methods?
A tail call.
Tail-call optimization.
}
Backtracking.
One or more base cases.
One or more recursive calls.
Select all true statements about the method below:
private static int sumEveryThird (int sum, int num) {
if(num== 0) {
return sum;
}
else {
}
return sumEveryThird (sum + num, num-3);
The method may cause Stack Overflow error on some inputs.
The method contains one base case and one recursive call.
The method is recursive.
The method has a tail call.
The method will always cause Stack Overflow error.
Consider the following problem:
Maximum Potato Haul
A square n x n grid represents a potato field, and each cell in this 'field" has an integer representing the number of potatoes in that
cell, or o if it there are none (cell is empty).
Return the maximum number of potatoes you can collect under these conditions:
• Every time you are located in a cell you will collect all the potatoes in that cell.
• From your position, you can walk one step to the left, right, up, or down provided you stay on the grid.
• You can't visit the same cell more than once.
You can never visit a cell with o potatoes (empty cell).
• You can start and stop collecting potatoes from any position in the grid that is not empty.
You do not have to solve the Maximum Potato Haul problem (although it would make for great interview
practice!) but you should recognize some features of it.
Now select all true statements about this problem:
The only way to solve this problem is to use recursion.
There is a non-recursive solution to this problem.
Since current location on the field/grid is a key element of the solution, using the data structure Map is helpful.
This problem can be solved using recursion with backtracking.
There is a O(n) solution to this problem where n is the number of potatoes on the grid.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

Distinguish between Recursion and Iteration. Give practical examples to illustrate your answer.
Consider a scenario in which you would use recursive binary search. What would you do? What is the halting condition for a recursive binary search in the first place?
36. write general plan for analyzing non-recursive algorithms.
Implement the logarithmBase22 method which, given a long integer number, returns the result of Logz2(number), rounded down to the nearest floor integer. Design and implement this as a recursive method. Read the test cases in the JUnit tester file for more detailed specification.
Contrast and contrast iterative and recursive solutions. When do you prefer iteration over recursion, and when do you favour recursion over iteration? Give specific instances to back up your response.
10. write general plan for analyzing recursive algorithms.
While working with Recursion, why do we need a base case? What will happen if we remove it? Explain with example
Recursive solutions can often be solved with non-recursive loop based implementations. Explain how a developer would decide which solution (recursive vs. non-recursive) he/she would implement in final production code.
A recursion that never ends is defined as follows: What exactly is a direct recursion, and how does it work? An indirect recursion is a kind of recursion that works in a certain way.
For each of the following recursive methods, identify the base case, the general case, and the constraints on the argument values, and explain what the method does. (images below)
How is the repeated calling of a recursion function controlled? What kind of command and control structure is being utilized in this instance?
How do I write a recursive method in C# that will take as input a number, m, and then displays all the prime numbers smaller or equal to m.