Question

What is the java code for this.
The goal of this lab is to write two programs, Summation and Prime, that execute simple tasks. The first computes the summation of integers within a range with a gap that the user specifies. The second tests whether the integer that the user enters is a square and if not, whether it is composite or prime. Summation Let us see some execution examples first, to get the sense of how the program works. 1 % java Summation 2 Enter start end and gap: 10 100 3 3 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 82 85 88 91 94 97 100 4 The total is 1705 5 % java Summation 6 Enter start end and gap: 100 10 3 7 100 97 94 91 88 85 82 79 76 73 70 67 64 61 58 55 52 49 46 43 40 37 34 31 28 25 22 19 16 13 10 8 The total is 1705 The input the user provides appears in blue. Between "Enter ..." and "The total ..." appears the numbers that the program is adding to the total. The program does the summation in two different methods, totalPlus and totalMinus. Both methods are void and receive three int parameters start, end, and gap. We anticipate that the value of gap is positive for both. In the case of totalPlus, we anticipate start <= end and in the case of the other, start > end. The program, in its main method, receives values a, b, c for the three parameters and then, if a <= b, call totalPlus( a, b, Math.max 1, Math.abs(c))), and otherwise, totalMinus( a, b, Math.max 1, Math.abs(C))). A simple for-loop is adequate for summing the integers, specifically, for (int i = start; i <= end; i += gap ) in the case of the former for (int i = start; i >= end; i == gap ) in the case of the other. During the execution of the for-loop, the program prints the number it is adding with the statement System.out.print("" + i). At the conclusion of the loop, it executes System.out.println() to go to the next line.

Answer 1

SOURCE CODE:-

*Please follow the comments to better understand the code.
**Please look at the Screenshot below and use this code to copy-paste.
***The code in the below screenshot is neatly indented for better understanding.

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import java.util.Scanner;

public class Summation
{
    public static void main(String[] args) {
        System.out.print("Enter start end and gap: ");
        Scanner scanner=new Scanner(System.in);
        // read the data
        int start=scanner.nextInt();
        int end=scanner.nextInt();
        int gap=scanner.nextInt();

        // print the numbers and calculate sum
        if(start>end)
        {
            // swap
            int temp=start;
            start=end;
            end=temp;
        }
        int sum=0;
        for(int i=start;i<=end;i+=gap) {
            System.out.print(i + " ");
            sum+=i;
        }
        // print the sum
        System.out.println("\nThe total is "+sum);

    }
}

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import java.util.Scanner; 1 Lluje 3 public class Summation 5 public static void main(String[] args) { System.out.print("Enter start end and gap: "); Scanner scanner=new Scanner(System.in); // read the data int start=scanner.nextInt(); int end=scanner.nextInt(); int gap=scanner.nextInt(); Il print the numbers and calculate sum if(start>end) // swap int temp=start; start=end; end=temp; 23 int sum=0; for(int i=start;i<=end; i+=gap) { System.out.print(i + " "); sum+=i; Summation > main() Summation x /usr/lib/jvm/java - 1.11.0-openjdk-amd64/bin/java -javaagent:/snap/intellij-idea-community/208/lib Enter start end and gap: 10 100 31 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 82 85 88 91 94 97 100 The total is 1705 Run: I< O LJLI ULLUI Process finished with exit code 0, • 4 I!

import java.util.Scanner; 3 public class Summation 5 public static void main(String[] args) { System.out.print("Enter start end and gap: "); Scanner scanner=new Scanner(System.in); I read the data int start=scanner.nextInt(); int end=scanner.nextInt(); int gap=scanner.nextInt(); // print the numbers and calculate sum if(start>end) // swap int temp=start; start=end; end=temp; int sum=0; for(int i=start;i<=end; i+=gap) { System.out.print(i + " "); sum+=i; Summation > main() Summation x /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -javaagent:/snap/intellij-idea-community/208/lib/idea_rt.jar=41) Enter start end and gap: 100 10 3 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 82 85 88 91 94 97 100 The total is 1705 Run: 41 JL Process finished with exit code o

Please note that in the given time, it is not possible to solve both the questions.
Please post the second one as another question.

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