Question

(JAVA)

ExceptionSum

The objective of this exercise is to create a method that adds all the numbers within an array with an exception you cant sum the 6, and the 7, and the numbers between them cannot be added too, taking into account that whenever a 6 appears will be followed by a 7.

If we have an array such that [1,2,3,6,10,9,8,7,5] when we pass it through the method it will give us an int such that the sum will be 11.

In order to do this exercise, you will have to make a static public method, called sum, this method will return int, which will be the sum of all the numbers in the array except the numbers between 6 and 7, and the same 6 and 7.

Here is the class diagram.

ExceptionSum

+ sum(int [] a) : int

Answer 1

CODE:

import java.util.*;
public class ExceptionSum
{
   public static void main(String[] args)
   {
       Scanner scan = new Scanner(System.in);
       System.out.print("Enter Number of elements : ");
       int n=scan.nextInt();//taking input
       int[] a = new int[n];//array declaration
       int i=0;//loop variable
       System.out.print("Enter elements : ");
       //loop to get the elements from user.
       for(i=0;i<n;i++)
       {
           a[i] = scan.nextInt();//taking input
       }
       System.out.print("The sum is : ");
       System.out.print(sum(a));//printing sum.
   }
   public static int sum(int[] a)
   {
       //varibles required and two flags.
       int sum_value = 0,flag_6=0,flag_7=0;
       for(int i=0;i<a.length;i++)
       {
           if(a[i] == 6)
           {
               flag_6 = 1;//turning on flag
           }
           else if(a[i] == 7)
           {
               flag_7 = 1;//turning on flag
           }
           //if there is no 6 and after 7 is encountered.
           else if(flag_6 == flag_7)
           {
               sum_value += a[i];//adding the value to the sum.
           }
       }
       return sum_value;//returning sum value
   }
}

CODE ATTACHMENTS:

OUTPUT:

I have used flags here to get the exception.

The flags are equal before 6 is encountered and after 7 is encountered.

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