82 lines
1.2 KiB
Plaintext
82 lines
1.2 KiB
Plaintext
unit UTrebuchet;
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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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type
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{ TTrebuchet }
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TTrebuchet = class(TObject)
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private
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FValue: Integer;
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procedure RunSolution;
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procedure ProcessDataLine(const ALine: string);
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public
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class procedure Solve; static;
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constructor Create;
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end;
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implementation
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{ TTrebuchet }
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procedure TTrebuchet.RunSolution;
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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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AssignFile(data, ConcatPaths(['data', 'trebuchet_calibration_document.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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WriteLn(FValue);
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end;
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procedure TTrebuchet.ProcessDataLine(const ALine: string);
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var
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c: Char;
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first, last: Integer;
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begin
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first := -1;
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last := -1;
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for c in ALine do
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begin
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if c in ['0'..'9'] then
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begin
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last := StrToInt(c);
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if first < 0 then
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first := last;
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end;
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end;
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Inc(FValue, first * 10 + last);
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end;
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class procedure TTrebuchet.Solve;
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var
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trebuchet: TTrebuchet;
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begin
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WriteLn('--- Day 1: Trebuchet?! ---');
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trebuchet := TTrebuchet.Create;
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trebuchet.RunSolution;
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end;
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constructor TTrebuchet.Create;
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begin
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FValue := 0;
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end;
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end.
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