Consider the following definition of a recursive method. public static int mystery(int[] list, int first, int last) { if (first == last) return list[first]; else return list[first] + mystery(list, first + 1, last); } Given the declaration int[] alpha = {1, 4, 5, 8, 9}; What is the output of the following statement? System.out.println(mystery(alpha, 0, 4)); a. 1 b. 18 c. 27 d. 32

Answer:

Implemented using Python

n = int(input("Sides: "))

if(n>=1 and n <=50):

    for i in range(1,n+1):

         for j in range(1,i+1):

              print('*',end='')

         print("")

    for i in range(n,0,-1):

         for j in range(i,1,-1):

              print('*',end='')

         print("")

else:

         print("Range must be within 1 and 50")

Explanation:

This line prompts user for number of sides

n = int(input("Sides: "))

The line validates user input for 1 to 50

if(n>=1 and n <=50):

The following iteration uses nested loop to print * in ascending order

   for i in range(1,n+1):

         for j in range(1,i+1):

              print('*',end='')

         print("")

The following iteration uses nested loop to print * in descending order        

    for i in range(n,0,-1):

         for j in range(i,1,-1):

              print('*',end='')

         print("")

The following is executed if user input is outside 1 and 50

else:

         print("Range must be within 1 and 50")

Answer:

Following are the program in the C++ Programming Language.

//header file

#include<iostream>

//header file

#include <bits/stdc++.h>

//namespace

using namespace std;

//set main function

int main()

{

//set float type variables

float a,s,m,d,c,b,g;

//print message and get variable from the user

cout<<" Enter The First Number : ";

cin>>c;

//print message and get variable from the user

cout<<" Enter The Second Number: ";

cin>>b;

again:

//get variable from the user for Operation

cout<<" Enter the Operation which you want : ";

char choice;

cin>>choice;

//Addition

a=c+b;

//Subtraction

s=c-b;

//Multiplication

m=c*b;

//Division

d=c/b;

//Modulus

g=fmod(c, b);

//set switch statement

//here is the solution

 switch(choice)

 {

   case '+':  

     cout<<"Addition: "<<a<<endl;

     goto again;

     break;

   case '-':

     cout<<"Subtraction: "<<s<<endl;

     goto again;

     break;

   case '*':

     cout<<"Multiplication: "<<m<<endl;

     goto again;

     break;

   case '/':

     cout<<"Division: "<<d<<endl;

     goto again;

     break;

   case '%':

     cout<<"Modulus: "<<g<<endl;

     goto again;

     break;

   default:

     cout<<"Exit";

     break;

 }

return 0;

}Explanation:

Here, we define the required header files then, we set main function.

• set float type variables a,s,m,d,c,b,g.
• Get input from the user for operation in the variable c,d.
• Set character type variables in which we get input from the user for operations.
• Then, we perform some operations.
• Set switch statement which display the output according to the user an if user input wrong then statement breaks.

Answer:

C.system prototyping

Explanation:

Prototyping produces a quickly constructed working version of the proposed information system.

Planning

↓

Analysis

↓

Design

↓

System prototyping

↓

Implementation

Answer:

c. system prototyping

Explanation:

system prototyping  produces a full-featured, working model of the information system.

Answer: Exception

Explanation: A throw statement is a statement that whenever it gets executed ,it stops the flow of the execution immediately. The throw statement has a throw keyword for stopping of the execution which is denoted as the exception. A checked or unchecked exception can only be thrown. The compiler of a program has the function of giving warning if there are chances of exception.

Answer:

Confidentiality of Information

Explanation:

Because when you work for a company that confidential information, the company usually asks it employees not to discuss or share information with anyone. The company usually asks their employees to sign a Confidentiality Contract.

Answer:

A structured chart is a sequential representation of program design

Explanation:

It is true that a real-time system which is a term to describe an operating system working in relation to real-time is actually a form of the online system. Hence, option B is not correct.

It is also true that Batch totals are not incorporated while designing real-time applications because Batch Data processing is carried out in a separate manner and at a time when the computer is free. Thus Option C is not Correct

It is also true that 4GL which stands for Forth generation programming language is used for application prototyping. Again Option D is not Correct.

However, a structured chart is not a sequential representation of program design, but rather a break down to the infinitesimal module in the program design. Hence, option A is the correct answer.