Initial data commit

Task/Nth/C-sharp/nth-2.cs

@@ -0,0 +1,22 @@
+using System;
+
+static string Ordinalize(int i)
+{
+    return i + (
+        i % 100 is >= 11 and <= 13 ? "th" :
+        i % 10 == 1 ? "st" :
+        i % 10 == 2 ? "nd" :
+        i % 10 == 3 ? "rd" :
+        "th");
+}
+
+static void PrintRange(int begin, int end)
+{
+    for(var i = begin; i <= end; i++)
+        Console.Write(Ordinalize(i) + (i == end ? "" : " "));
+    Console.WriteLine();
+}
+
+PrintRange(0, 25);
+PrintRange(250, 265);
+PrintRange(1000, 1025);