Consider the following recursive method.

public static String doSomething(String str)
{
if (str.length() < 1)
{
return "";
}
else
{
return str.substring(0, 1) + doSomething(str.substring(1));
}
}
Which of the following best describes the result of the call doSomething(myString) ?

A
The method call returns a String containing the contents of myString unchanged.

B
The method call returns a String containing the contents of myString with the order of the characters reversed from their order in myString.

C
The method call returns a String containing all but the first character of myString.

D
The method call returns a String containing only the first and second characters of myString.

E
The method call returns a String containing only the first and last characters of myString.

Answers

Answer 1

Answer:

A

The method call returns a String containing the contents of myString unchanged.

Explanation:


Related Questions

Explain the paging concept and main disadvantages of pipelined
approaches? Compare the superscalar and super pipelined approaches
with block diagram?

Answers

Answer:

PAGINACIÓN En la gestión de memoria con intercambio, cuando ... Debido a que es posible separar los módulos, se hace más fácil la modificación de los mismos. ... Ventajas y Desventajas de la segmentación paginada

Explanation:

Write a recursive method called permut that accepts two integers n and r as parameters and returns the number of unique permutations of r items from a group of n items. For given values of n and r, this value P(n, r) can be computed as follows:
n!/(n - r)!
For example , permut (7, 4) should return 840.

Answers

Answer:

Following are the code to the given question:

public class Main//defining a class Main

{

static int permut(int n, int r)//defining a method permut that holds two variable

{

return fact(n)/fact(n-r);//use return keyword to return calcuate value

}

static int fact(int n)//defining a fact method as recursive to calculate factorials

{

return n==0?1:n*fact(n-1);//calling the method recursively

}

public static void main(String[] abs)//main function

{

//int n=7,r=4;//defining integer variable

System.out.println(permut(7,4));//use print method to call permut method and print its values

}

}

Output:

840

Explanation:

Following is the explanation for the above code.

Defining a class Main.Inside the class two methods, "permut and fact" were defined, in which the "permut" accepts two values for calculating its permutated value, and the fact is used for calculates factorial values recursively. At the last, the main method is declared, which uses the print method to call "permut" and prints its return values.

Acróstico sobre mouse

Answers

this is a PICTURE

i HOPE IT'S HELP

Suppose you are choosing between the following three algorithms:
• Algorithm A solves problems by dividing them into five subproblems of half the size, recursively solving each subproblem, and then combining the solutions in linear time.
• Algorithm B solves problems of size n by recursively solving two subproblems of size n − 1 and then combining the solutions in constant time.
• Algorithm C solves problems of size n by dividing them into nine sub-problems of size n=3, recursively solving each sub-problem, and then combining the solutions in O(n2) time.
What are the running times of each of these algorithms (in big-O notation), and which would you choose?

Answers

Answer:

Algorithm C is chosen

Explanation:

For Algorithm A

T(n) = 5 * T ( n/2 ) + 0(n)

where : a = 5 , b = 2 , ∝ = 1

attached below is the remaining part of the solution

Animation timing is does not affect the
speed of the presentation
Select one:
True
False​

Answers

Answer:

True

Explanation:

I think it's true.....

What is a font?
O How the text for a paragraph appears
O A display of text characters in a specific style and size
O Text that has been made bold
O Artistic elements you can add to text

Answers

A display of text characters in specific style
answer: a display of text characters in a specific style and size

This lab was designed to teach you more about using Scanner to chop up Strings. Lab Description : Take a group of numbers all on the same line and average the numbers. First, total up all of the numbers. Then, take the total and divide that by the number of numbers. Format the average to three decimal places Sample Data : 9 10 5 20 11 22 33 44 55 66 77 4B 52 29 10D 50 29 D 100 90 95 98 100 97 Files Needed :: Average.java AverageRunner.java Sample Output: 9 10 5 20 average = 11.000 11 22 33 44 55 66 77 average = 44.000 48 52 29 100 50 29 average - 51.333 0 average - 0.000 100 90 95 98 100 97 average - 96.667

Answers

Answer:

The program is as follows:

import java.util.*;

public class Main{

public static void main(String[] args) {

    Scanner input = new Scanner(System.in);

 String score;

 System.out.print("Scores: ");

 score = input.nextLine();

 String[] scores_string = score.split(" ");

 double total = 0;

 for(int i = 0; i<scores_string.length;i++){

     total+= Double.parseDouble(scores_string[i]);  }

 double average = total/scores_string.length;

 System.out.format("Average: %.3f", average); }

}

Explanation:

This declares score as string

 String score;

This prompts the user for scores

 System.out.print("Scores: ");

This gets the input from the user

 score = input.nextLine();

This splits the scores into an array

 String[] scores_string = score.split(" ");

This initializes total to 0

 double total = 0;

This iterates through the scores

 for(int i = 0; i<scores_string.length;i++){

This calculates the sum by first converting each entry to double

     total+= Double.parseDouble(scores_string[i]);  }

The average is calculated here

 double average = total/scores_string.length;

This prints the average

 System.out.format("Average: %.3f", average); }

}

Derive the three-dimensional transformation matrix for scaling an object by a scaling factor s in a direction defined by the direction cosines alpha , beta , gamma

Answers

Answer:

i dont know

Explanation:

i dont knoe im doing this for the points hehe

Question 20:
Which of the following scenarios involve computers making predictions based on the analysis of
patterns in large data sets?
Select two answers.
Astate education board analyzing demographic information and academic records to identify students at risk
of dropping out of school.
The federal government analyzing state spending data to identify which states spent the most on social
services
A video streaming service analyzing viewer's habits to suggest videos based on the viewing history of other
viewers.
An airline analyzing flight records to determine the routes it operates with the least bookings.

Answers

Answer:

A video streaming service analyzing viewer’s habits to suggest videos based on the viewing history of other viewers.

 A state education board analyzing demographic information and academic records to identify students at risk of dropping out of school.

Explanation:

I just took the test and passed when you have multiple choice questions always pick ones that similar to each other and make sure it fit the question.

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