Multiple Harshad Number

        System.out.print("Enter a number : ");
        int n = sc.nextInt();
        int c, d, sum = 0,sum1=0,n1=0,count=0;
        while(n>1)
        {
               c=n;sum=0;
               while(c>0)
               {
               d = c%10;
               sum = sum + d;
               c = c/10;
               }
               if(n%sum==0)
               {
               sum1=sum;
               n1=n;
               n=n/sum;

               }
               else
               {
                   System.out.println("Not an harshad");
                   break;
               }

        }
            if(n1%sum1==0)
            System.out.println("Number is multiple harshad");
            else
            System.out.println("Number is not multiple harshad");    
    }
}

Sample input: 6804
Ans:
6+8+0+4=18=>6804/18=378
378=> 3+7+8=18=>378/18=21
21=> 2+1=3 =>21/3=7

Input: 126 Output : 126 is not harshad number

Pattern Program 1

Delete an element from an array

import java.util.Scanner;

 class Insert_Array 

{

    public static void main(String[] args) 

    {

        int n, pos, x;

        Scanner s = new Scanner(System.in);

        System.out.print("Enter no. of elements you want in array:");

        n = s.nextInt();

        int a[] = new int[n+1];

        System.out.println("Enter all the elements:");

        for(int i = 0; i < n; i++)

        {

            a[i] = s.nextInt();

        }

        System.out.print("Enter the position where you want to insert element:");

        pos = s.nextInt();

        System.out.print("Enter the element you want to insert:");

        x = s.nextInt();

        for(int i = pos; i < n; i++)

        {

            a[i] = a[i+1];

        }

        //a[n-1] = x;

        System.out.print("After inserting:");

        for(int i = 0; i < n-1; i++)

        {

            System.out.print(a[i]+",");

        }

        //System.out.print(a[n]);

    }

}

Insert an element in an array

1. import java.util.Scanner;

2. public class Insert_Array 

3. {

4.     public static void main(String[] args) 

5.     {

6.         int n, pos, x;

7.         Scanner s = new Scanner(System.in);

8.         System.out.print("Enter no. of elements you want in array:");

9.         n = s.nextInt();

10.         int a[] = new int[n+1];

11.         System.out.println("Enter all the elements:");

12.         for(int i = 0; i < n; i++)

13.         {

14.             a[i] = s.nextInt();

15.         }

16.         System.out.print("Enter the position where you want to insert element:");

17.         pos = s.nextInt();

18.         System.out.print("Enter the element you want to insert:");

19.         x = s.nextInt();

20.         for(int i = (n-1); i >= (pos-1); i--)

21.         {

22.             a[i+1] = a[i];

23.         }

24.         a[pos-1] = x;

25.         System.out.print("After inserting:");

26.         for(int i = 0; i < n; i++)

27.         {

28.             System.out.print(a[i]+",");

29.         }

30.         System.out.print(a[n]);

31.     }

32. }