KrishnamurthyNumberChecker.cs

usingSystem;

namespaceAlgorithms.Numeric;

/// <summary>
/// A Krishnamurthy number is a number whose sum of the factorial of digits
/// is equal to the number itself.
///
/// For example, 145 is a Krishnamurthy number since: 1! + 4! + 5! = 1 + 24 + 120 = 145.
/// </summary>
publicstaticclassKrishnamurthyNumberChecker
{
/// <summary>
/// Check if a number is Krishnamurthy number or not.
/// </summary>
/// <param name="n">The number to check.</param>
/// <returns>True if the number is Krishnamurthy, false otherwise.</returns>
publicstaticboolIsKMurthyNumber(intn)
{
intsumOfFactorials=0;
inttmp=n;

if(n<=0)
{
returnfalse;
}

while(n!=0)
{
intfactorial=(int)Factorial.Calculate(n%10);
sumOfFactorials+=factorial;
n=n/10;
}

returntmp==sumOfFactorials;
}
}