Added solution for "Day 15: Lens Library", part 1

solvers/ULensLibrary.pas

@@ -0,0 +1,80 @@
+{
+  Solutions to the Advent Of Code.
+  Copyright (C) 2023  Stefan Müller
+
+  This program is free software: you can redistribute it and/or modify it under
+  the terms of the GNU General Public License as published by the Free Software
+  Foundation, either version 3 of the License, or (at your option) any later
+  version.
+
+  This program is distributed in the hope that it will be useful, but WITHOUT
+  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License along with
+  this program.  If not, see <http://www.gnu.org/licenses/>.
+}
+
+unit ULensLibrary;
+
+{$mode ObjFPC}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils, USolver;
+
+type
+
+  { TLensLibrary }
+
+  TLensLibrary = class(TSolver)
+  private
+    function CalcHash(const AInput: string): Byte;
+  public
+    procedure ProcessDataLine(const ALine: string); override;
+    procedure Finish; override;
+    function GetDataFileName: string; override;
+    function GetPuzzleName: string; override;
+  end;
+
+implementation
+
+{ TLensLibrary }
+
+function TLensLibrary.CalcHash(const AInput: string): Byte;
+var
+  c: Char;
+begin
+  Result := 0;
+  for c in AInput do
+    Result := ((Result + Ord(c)) * 17) and 255;
+end;
+
+procedure TLensLibrary.ProcessDataLine(const ALine: string);
+var
+  split: TStringArray;
+  s: string;
+begin
+  split := ALine.Split(',');
+  for s in split do
+    Inc(FPart1, CalcHash(s));
+end;
+
+procedure TLensLibrary.Finish;
+begin
+
+end;
+
+function TLensLibrary.GetDataFileName: string;
+begin
+  Result := 'lens_library.txt';
+end;
+
+function TLensLibrary.GetPuzzleName: string;
+begin
+  Result := 'Day 15: Lens Library';
+end;
+
+end.
+