java - Multiple Harshad Number - 


        system.out.print("enter number : ");         int n = sc.nextint();         int c, d, sum = 0,sum1=0,n1=0,count=0;         while(n>1)         {                c=n;                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 harshad");                    break;                }          }             if(n1%sum1==0)             system.out.println("number multiple harshad");             else             system.out.println("number not multiple harshad");         } }

this code not working multiple harshad number. giving same output number not multiple harshad.when enter 108 gives multiple harshad when enter 8 give multiple harshad number. although 8 not multiple harshad number

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 not harshad number

you forgot reset sum 0 in each iteration of outer loop. result first iteration calculates correct sum of digits.

    while(n>1) {            sum = 0; // add            c=n;            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 harshad");                break;            }      }

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