public static string RunPart2()
{
var lines = InputHelper.ReadLinesAs <int>("Day1/input.txt");
HashSet <int> hashes = new HashSet <int>();
int i = 0;
int sum = 0;
while (true)
{
sum += lines[i];
if (!hashes.Add(sum))
{
return(sum.ToString());
}
i = (i + 1) % lines.Count();
}
}
public static string RunPart1()
{
var lines = InputHelper.ReadLinesAs <string>("Day2/input.txt");
Dictionary <char, int> dir = new Dictionary <char, int>();
int sum1 = 0;
int sum2 = 0;
foreach (var line in lines)
{
foreach (var letter in line)
{
if (dir.ContainsKey(letter))
{
dir[letter]++;
}
else
{
dir.Add(letter, 1);
}
}
if (dir.Values.Contains(2))
{
sum1++;
}
if (dir.Values.Contains(3))
{
sum2++;
}
dir.Clear();
}
return((sum1 * sum2).ToString());
}
public static string RunPart2()
{
var lines = InputHelper.ReadLinesAs <string>("Day2/input.txt");
foreach (var line in lines)
{
foreach (var line2 in lines)
{
if (line == line2)
{
continue;
}
int matching = 0;
string result = "";
for (int i = 0; i < line.Length; i++)
{
var char1 = line[i];
var char2 = line2[i];
if (char1 == char2)
{
matching++;
result += char1;
}
}
if (matching == line.Length - 1)
{
return(result);
}
}
}
return("");
}
public static string RunPart1()
{
var lines = InputHelper.ReadLinesAs <int>("Day1/input.txt");
return(lines.Sum().ToString());
}
