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3 changed files with 1 additions and 2332 deletions

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@ -1,92 +0,0 @@
using System;
using static System.Console;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using Xunit;
namespace AdventOfCode {
public class Day06 {
static int CountAnswers1(string[] input) {
int total = 0;
var groupAnswers = new HashSet<char>();
foreach (string line in input) {
if (line == "") {
total += groupAnswers.Count();
groupAnswers.Clear();
continue;
}
foreach (char c in line) {
groupAnswers.Add(c);
}
}
total += groupAnswers.Count();
return total;
}
static int CountAnswers2(string[] input) {
int total = 0;
var groupAnswers = new HashSet<char>();
int groupSize = 0;
foreach (string line in input) {
if (line == "") {
total += groupAnswers.Count();
groupAnswers.Clear();
groupSize = 0;
continue;
}
groupSize++;
if (groupSize == 1) {
foreach (char c in line) {
groupAnswers.Add(c);
}
} else {
foreach (char c in groupAnswers) {
if (!line.Contains(c)) {
groupAnswers.Remove(c);
}
}
}
}
total += groupAnswers.Count();
return total;
}
static int Part1() {
string[] input = File.ReadAllLines(Util.RootDir + "day06.txt");
return CountAnswers1(input);
}
static int Part2() {
string[] input = File.ReadAllLines(Util.RootDir + "day06.txt");
return CountAnswers2(input);
}
[Fact]
public static void Test() {
string[] example =
@"abc
a
b
c
ab
ac
a
a
a
a
b".Split('\n');
Assert.Equal(11, CountAnswers1(example));
Assert.Equal(6, CountAnswers2(example));
Assert.Equal(6947, Part1());
Assert.Equal(3398, Part2());
}
}
}

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@ -19,7 +19,7 @@ namespace AdventOfCode {
public class Program {
static void Main(string[] args) {
Day06.Test();
Day05.Test();
}
}
}

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