Initial data commit

Task/Population-count/C-sharp/population-count.cs

@@ -0,0 +1,70 @@
+using System;
+using System.Linq;
+
+namespace PopulationCount
+{
+    class Program
+    {
+        private static int PopulationCount(long n)
+        {
+            string binaryn = Convert.ToString(n, 2);
+            return binaryn.ToCharArray().Where(t => t == '1').Count();
+        }
+
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Population Counts:");
+            Console.Write("3^n :   ");
+
+            int count = 0;
+
+            while (count < 30)
+            {
+                double n = Math.Pow(3f, (double)count);
+                int popCount = PopulationCount((long)n);
+                Console.Write(string.Format("{0} ", popCount));
+                count++;
+            }
+
+            Console.WriteLine();
+            Console.Write("Evil:   ");
+
+            count = 0;
+            int i = 0;
+
+            while (count < 30)
+            {
+                int popCount = PopulationCount(i);
+
+                if (popCount % 2 == 0)
+                {
+                    count++;
+                    Console.Write(string.Format("{0} ", i));
+                }
+
+                i++;
+            }
+
+            Console.WriteLine();
+            Console.Write("Odious: ");
+
+            count = 0;
+            i = 0;
+
+            while (count < 30)
+            {
+                int popCount = PopulationCount(i);
+
+                if (popCount % 2 != 0)
+                {
+                    count++;
+                    Console.Write(string.Format("{0} ", i));
+                }
+
+                i++;
+            }
+
+            Console.ReadKey();
+        }
+    }
+}