Added solution for "Day 2: Cube Conundrum", part 1
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@ -30,9 +30,12 @@
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<IsPartOfProject Value="True"/>
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</Unit>
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<Unit>
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<Filename Value="puzzles\utrebuchet.pas"/>
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<Filename Value="puzzles\UCubeConundrum.pas"/>
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<IsPartOfProject Value="True"/>
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</Unit>
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<Unit>
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<Filename Value="puzzles\UTrebuchet.pas"/>
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<IsPartOfProject Value="True"/>
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<UnitName Value="UTrebuchet"/>
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</Unit>
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</Units>
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</ProjectOptions>
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@ -23,7 +23,8 @@ uses
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{$IFDEF UNIX}
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cthreads,
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{$ENDIF}
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Classes, SysUtils, CustApp, UTrebuchet;
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Classes, SysUtils, CustApp,
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UTrebuchet, UCubeConundrum;
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type
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@ -44,8 +45,9 @@ type
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procedure TAdventOfCode.RunPuzzleSolutions;
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begin
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WriteLn('Advent of Code 2023');
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TTrebuchet.Solve;
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WriteLn('### Advent of Code 2023 ###');
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TTrebuchet.Run;
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TCubeConundrum.Run;
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end;
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procedure TAdventOfCode.DoRun;
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@ -0,0 +1,138 @@
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{
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Solutions to the Advent Of Code.
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Copyright (C) 2023 Stefan Müller
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This program is free software: you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program. If not, see <http://www.gnu.org/licenses/>.
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}
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unit UCubeConundrum;
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{$mode ObjFPC}{$H+}
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interface
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uses
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Classes, SysUtils;
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const
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CMaxRed = 12;
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CMaxGreen = 13;
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CMaxBlue = 14;
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type
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{ TCubeConundrum }
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TCubeConundrum = class(TObject)
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private
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FValue: Integer;
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procedure ProcessDataLine(const ALine: string);
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procedure ProcessGame(const id: Integer; const draws: TStringArray);
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function ProcessDraw(const cubes: TStringArray): Boolean;
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public
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function Solve: Integer;
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class procedure Run; static;
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end;
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implementation
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{ TCubeConundrum }
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procedure TCubeConundrum.ProcessDataLine(const ALine: string);
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var
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gameSplit, subSplit: TStringArray;
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id: Integer;
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begin
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gameSplit := ALine.Split(':');
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subSplit := gameSplit[0].Split(' ');
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id := StrToInt(subSplit[1]);
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subSplit := gameSplit[1].Split(';');
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ProcessGame(id, subSplit);
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end;
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procedure TCubeConundrum.ProcessGame(const id: Integer; const draws: TStringArray);
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var
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draw: string;
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drawSplit: TStringArray;
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begin
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for draw in draws do
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begin
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drawSplit := draw.Split(',');
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if not ProcessDraw(drawSplit) then
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Exit;
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end;
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// All draws fulfill maxima.
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Inc(FValue, id);
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end;
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function TCubeConundrum.ProcessDraw(const cubes: TStringArray): Boolean;
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var
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cubeColor: string;
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colorSplit: TStringArray;
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max: Integer;
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begin
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for cubeColor in cubes do
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begin
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colorSplit := cubeColor.Trim.Split(' ');
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if colorSplit[1] = 'red' then
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max := CMaxRed
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else if colorSplit[1] = 'green' then
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max := CMaxGreen
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else if colorSplit[1] = 'blue' then
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max := CMaxBlue;
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if StrToInt(colorSplit[0]) > max then
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begin
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Result := False;
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Exit;
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end;
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end;
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Result := True;
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end;
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function TCubeConundrum.Solve: Integer;
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var
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data: TextFile;
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s: string;
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begin
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FValue := 0;
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AssignFile(data, ConcatPaths(['data', 'cube_conundrum.txt']));
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try
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reset(data);
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while (not EOF(data)) do
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begin
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readln(data, s);
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ProcessDataLine(s);
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end;
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finally
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CloseFile(data)
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end;
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Result := FValue;
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end;
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class procedure TCubeConundrum.Run;
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var
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cubeConundrum: TCubeConundrum;
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begin
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WriteLn;
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WriteLn('--- Day 2: Cube Conundrum ---');
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cubeConundrum := TCubeConundrum.Create;
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WriteLn('Part 1: ', cubeConundrum.Solve);
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cubeConundrum.Free;
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end;
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end.
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