public string GetNextComp(string str, out Comp2 comp)
{
int lb = str.IndexOf('(');
if (lb < 0)
{
comp = new Comp2(str);
return("");
}
else if (lb > 0)
{
comp = new Comp2(str.Substring(0, lb));
return(str.Substring(lb));
}
int rb = str.IndexOf(')', lb);
if (rb < 0)
{
comp = new Comp2(str);
return("");
}
string[] xy = str.Substring(lb + 1, rb - lb - 1).Split('x');
int len = int.Parse(xy[0]);
int repeat = int.Parse(xy[1]);
var s = str.Substring(rb + 1, len);
comp = new Comp2(repeat, s);
var rest = str.Substring(rb + 1 + len);
return(rest);
}
public static void Run()
{
string input = System.IO.File.ReadAllText("day09.txt");
input = Regex.Replace(input, @"\s+", "");
StringBuilder sb = new StringBuilder();
for (int i = 0; i < input.Length;)
{
int lb = input.IndexOf('(', i);
if (lb < 0)
{
sb.Append(input.Substring(i));
break;
}
sb.Append(input.Substring(i, lb - i));
i = input.IndexOf(')', i);
if (i < 0)
{
sb.Append(input.Substring(lb));
break;
}
string[] xy = input.Substring(lb + 1, i - lb - 1).Split('x');
int len = int.Parse(xy[0]);
int n = int.Parse(xy[1]);
i++;
foreach (var repeat in Enumerable.Repeat(input.Substring(i, len), n))
{
sb.Append(repeat);
}
i += len;
}
int part1 = sb.ToString().Length;
Console.WriteLine("==== Part 1 ====");
Console.WriteLine($"Decompressed length: {part1}");
Console.WriteLine();
Comp2 part2 = new Comp2(1, input);
Console.WriteLine("==== Part 2 ====");
Console.WriteLine($"Decompressed length: {part2.Length}");
}
public Serv1(Comp1 c1, Comp2 c2)
{
}