Narcissistic decimal number: Difference between revisions

===or===

<lang csharp>

//Narcissistic numbers: Nigel Galloway: February 17th., 2015

using System;

using System.Collections.Generic;

using System.Linq;

namespace RC {

public static class NumberEx {

public static IEnumerable<int> Digits(this int n) {

List<int> digits = new List<int>();

while (n > 0) {

digits.Add(n % 10);

n /= 10;

}

return digits.AsEnumerable();

}

}

class Program {

static void Main(string[] args) {

foreach (int N in Enumerable.Range(0, Int32.MaxValue).Where(k => {

var digits = k.Digits();

return digits.Sum(x => Math.Pow(x, digits.Count())) == k;

}).Take(25)) {

System.Console.WriteLine(N);

}

}

}

}

</lang>

{{out}}

<pre>

0

1

2

3

4

5

6

7

8

9

153

370

371

407

1634

8208

9474

54748

92727

93084

548834

1741725

4210818

9800817

9926315

</pre>