private static ulong DoPart1(string[] input)
{
ulong result = 0;
Mask_Part1 mask = new Mask_Part1();
Dictionary <ulong, ulong> values = new Dictionary <ulong, ulong>();
foreach (String instruction in input)
{
Match m = MaskRegex.Match(instruction);
if (m.Success)
{
String newMask = m.Groups[1].Value;
mask.Update(newMask);
}
else
{
m = MemRegex.Match(instruction);
Debug.Assert(m.Success);
ulong address = ulong.Parse(m.Groups[1].Value);
ulong rawValue = ulong.Parse(m.Groups[2].Value);
ulong actualValue = mask.Apply(rawValue);
values[address] = actualValue;
}
}
foreach (KeyValuePair <ulong, ulong> kvp in values)
{
result += kvp.Value;
}
return(result);
}
