5 - Strong number in c sharp

Strong number in c sharp c#

public bool CheckStrongNumber(int n)

       {

           int i, n1, s1 = 0, j;

           int fact;

           n1 = n;

           for (j = n; j > 0; j = j / 10)

           {

               fact = 1;

               for (i = 1; i <= j % 10; i++)

               {

                   fact = fact * i;

               }

               s1 = s1 + fact;

           }

           if (s1 == n1)

           {

               return true;

           }

           return false;

       }

[TestMethod]

       public void TestCheckStrongNumber()

       {

           BasicProgramming basicProgramming

= new BasicProgramming();

           bool output = basicProgramming

.CheckStrongNumber(2);

           Assert.AreEqual(true, output);

       }

How to check or dry run to check whether

number is strong or not

A number is called strong number if sum of the factorial of its digit

is equals to number itself. For example 145 since

1! + 4! +5! = 1+24+120 =145

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

public bool CheckStrongNumber(int n) { int i, n1, s1 = 0, j; int fact; n1 = n; for (j = n; j > 0; j = j / 10) { fact = 1; for (i = 1; i <= j % 10; i++) { fact = fact * i; } s1 = s1 + fact; } if (s1 == n1) { return true; } return false; }