68 lines
2.1 KiB
C#
68 lines
2.1 KiB
C#
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namespace AoC24;
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using AoC24.Common;
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using AoCLevelInputProvider;
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using Parsing;
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using Parsing.Data;
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using Parsing.Schema;
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public class Level4Solver : FullTextLevelSolverBase
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{
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public override int LevelNumber
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{
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get { return 4; }
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}
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protected override InputSchemaBuilder DefineInputSchema(InputSchemaBuilder schemaBuilder)
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{
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return schemaBuilder
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.Repeat()
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.Expect(InputType.Char)
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.EndRepetition();
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}
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public override string SolveFirstStar()
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{
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var data = this.GetData()
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.AsListRows<string>();
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var searchSequence = new List<string> { "X", "M", "A", "S" };
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var manipulator = DefaultTwoDimensionalManipulator.Create(data);
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var searchResults = manipulator.FindInSet(searchSequence);
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return searchResults.Count.ToString();
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}
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public override string SolveSecondStar()
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{
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var data = this.GetData()
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.AsListRows<string>();
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var searchSequence = new List<string> { "M", "A", "S" };
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var manipulator = DefaultTwoDimensionalManipulator.Create(data);
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var searchResults = manipulator.FindInSet(searchSequence, Direction.NE | Direction.SE | Direction.NW | Direction.SW);
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var indicesComparator = (IDataIndex<int> index1, IDataIndex<int> index2) =>
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{
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return index1.GetIndices()[0] == index2.GetIndices()[0] && index1.GetIndices()[1] == index2.GetIndices()[1];
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};
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var foundMatches = 0;
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for(int i = 0; i < searchResults.Count; i++)
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{
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var secondPositionA = manipulator.Move(searchResults[i].DataIndex, searchResults[i].Direction);
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for(int j = i+1; j < searchResults.Count; j++)
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{
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var secondPositionB = manipulator.Move(searchResults[j].DataIndex, searchResults[j].Direction);
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if(indicesComparator(secondPositionA, secondPositionB))
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{
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foundMatches++;
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break;
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}
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}
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}
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return foundMatches.ToString();
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}
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}
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