42 lines
1.3 KiB
C#
42 lines
1.3 KiB
C#
using System.Text.RegularExpressions;
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namespace AdventOfCode.Solutions._2023
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{
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public class Day02Part2 : Answerable
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{
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public override int Year { get; set; } = 2023;
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public override int Day { get; set; } = 2;
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public override int Part { get; set; } = 2;
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public override string GetAnswer(byte[] data)
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{
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return GetAsStringArray(data)
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.Select(GetValueFromLine)
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.Sum()
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.ToString();
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}
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private int GetValueFromLine(string line)
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{
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// get all the numers
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string dicePulls = line.Split(':')[1];
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// parse the pulls
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MatchCollection dice = Regex.Matches(dicePulls, "(\\d+) (g|r|b)");
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int red = 0, green = 0, blue = 0;
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foreach (Match match in dice)
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{
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string[] splitted = match.Value.Split(' ');
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int ammount = int.Parse(splitted[0]);
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if (splitted[1] == "r" && ammount > red) { red = ammount; }
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else if (splitted[1] == "g" && ammount > green) { green = ammount; }
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else if (splitted[1] == "b" && ammount > blue) { blue = ammount; }
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}
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return red * green * blue;
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}
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}
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}
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