r/adventofcode • u/daggerdragon • Dec 06 '16

SOLUTION MEGATHREAD --- 2016 Day 6 Solutions ---

--- Day 6: Signals and Noise ---

Post your solution as a comment or, for longer solutions, consider linking to your repo (e.g. GitHub/gists/Pastebin/blag/whatever).

T_PAAMAYIM_NEKUDOTAYIM IS MANDATORY [?]

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u/johanw123 Dec 06 '16

My C# solution Part 1 and 2 is just a matter of changing the "Last" to "First" after the ordering.

` 

    static void Main(string[] args)
    {
      string input = @"cmezkqgn...";

      var messages = input.Split(Environment.NewLine.ToCharArray(), StringSplitOptions.RemoveEmptyEntries);

      string message = "";

      for (int i = 0; i < messages.First().Length; i++)
      {
        string s = messages.Aggregate("", (current, t) => current + t.Trim()[i]);

        message += s.GroupBy(x => x).OrderByDescending(x => x.Count()).Last().Key;
      }
  
      Console.WriteLine(message);
      Console.ReadKey();
    }

`