public ulong ExecutePart2(string[] commands)
{
Dictionary <ulong, ulong> memory = new Dictionary <ulong, ulong>();
string mask = "";
foreach (var input in commands)
{
if (input.StartsWith("mask"))
{
var parts = input.Split(" = ");
mask = parts[1];
}
if (input.StartsWith("mem"))
{
int startIndex = input.IndexOf('[') + 1;
int lenght = input.IndexOf(']') - startIndex;
var initialMemoryDirection = ulong.Parse(input.Substring(startIndex, lenght));
var memoryDirectionMasked = Day14Extensions.ApplyMask2(initialMemoryDirection, mask);
ulong value = ulong.Parse(input.Split(" = ")[1]);
foreach (var memoryDirection in memoryDirectionMasked)
{
if (memory.ContainsKey(memoryDirection))
{
memory[memoryDirection] = value;
}
else
{
memory.Add(memoryDirection, value);
}
}
}
}
ulong result = 0;
foreach (var item in memory)
{
result = result + item.Value;
}
return(result);
}
public ulong ExecutePart1()
{
Dictionary <int, ulong> memory = new Dictionary <int, ulong>();
string mask = "";
foreach (var input in _input)
{
if (input.StartsWith("mask"))
{
var parts = input.Split(" = ");
mask = parts[1];
}
if (input.StartsWith("mem"))
{
int startIndex = input.IndexOf('[') + 1;
int lenght = input.IndexOf(']') - startIndex;
int memoryDirection = int.Parse(input.Substring(startIndex, lenght));
ulong originalValue = ulong.Parse(input.Split(" = ")[1]);
ulong value = Day14Extensions.ApplyMask(originalValue, mask);
if (memory.ContainsKey(memoryDirection))
{
memory[memoryDirection] = value;
}
else
{
memory.Add(memoryDirection, value);
}
}
}
ulong result = 0;
foreach (var item in memory)
{
result = result + item.Value;
}
return(result);
}