Anonymous user
Perfect numbers: Difference between revisions
Add lambda version
(Factor) |
(Add lambda version) |
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Line 161:
return ((sum == 2 * num || (sum - num == num)));
}
</lang>
===Version using Lambdas, will only work from version 3 of C# on===
<lang csharp>
static void Main(string[] args)
{
Console.WriteLine("Perfect numbers from 1 to 33550337:");
for (int x = 0; x < 33550337; x++)
{
if (IsPerfect(x))
Console.WriteLine(x + " is perfect.");
}
Console.ReadLine();
}
static bool IsPerfect(int num)
{
return Enumerable.Range(1, num - 1).Sum(n => num % n == 0 ? n : 0 ) == num;
}
</lang>
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