Another update from ingydotnet^djgoku

Task/ABC-Problem/C-sharp/abc-problem-1.cs

@@ -0,0 +1,30 @@
+using System;
+using System.IO;
+// Needed for the method.
+using System.Text.RegularExpressions;
+using System.Collections.Generic;
+
+void Main()
+{
+   string blocks = "BO XK DQ CP NA GT RE TG QD FS JW HU VI AN OB ER FS LY PC ZM";
+   List<string> words = new List<string>() {
+      "A", "BARK", "BOOK", "TREAT", "COMMON", "SQUAD", "CONFUSE"
+   };
+
+   foreach(var word in words)
+   {
+      Console.WriteLine("{0}: {1}", word, CheckWord(blocks, word));
+   }
+}
+
+bool CheckWord(string blocks, string word)
+{
+   for(int i = 0; i < word.Length; ++i)
+   {
+      int length = blocks.Length;
+      Regex rgx = new Regex("([a-z]"+word[i]+"|"+word[i]+"[a-z])", RegexOptions.IgnoreCase);
+      blocks = rgx.Replace(blocks, "", 1);
+      if(blocks.Length == length) return false;
+   }
+   return true;
+}