33 lines
910 B
C#
33 lines
910 B
C#
namespace aoc2019;
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public sealed class Day08 : Day
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{
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private readonly List<List<char>> photo;
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public Day08() : base(8, "Space Image Format")
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{
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photo = Input.First().Chunk(25 * 6).Select(s => s.ToList()).ToList();
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}
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public override string Part1()
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{
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var l = photo.OrderBy(layer => layer.Count(pixel => pixel == '0')).First();
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return $"{l.Count(p => p == '1') * l.Count(p => p == '2')}";
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}
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public override string Part2()
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{
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return "\n" + Enumerable.Range(0, 25 * 6)
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.Select(p => Enumerable.Range(0, photo.Count)
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.Select(l => photo[l][p])
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.Aggregate('2', (acc, next) =>
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acc != '2' ? acc : next == '0' ? ' ' : next
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)
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)
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.ToDelimitedString()
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.Chunk(25)
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.ToDelimitedString("\n")
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.Replace('1', 'x');
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}
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}
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