public int Part1(string input)
{
input += '-';
var count = 0;
for (var i = 0; i < 128; ++i)
{
var inVal = input + i.ToString();
var hash = _Day10.Part2(inVal);
for (var pos = 0; pos < hash.Length; pos += 8)
{
var part = hash.Substring(pos, 8);
var partAsInt = int.Parse(part, System.Globalization.NumberStyles.HexNumber);
count += NumberOfSetBits(partAsInt);
}
}
return(count);
}
public int Part1(string input)
{
int ret = 0;
var knotHasher = new Day10();
for (int r = 0; r < 128; r++)
{
var hash = knotHasher.Part2($"{input}-{r}");
var binString = string.Join(string.Empty, hash.Select(c => Convert.ToString(Convert.ToInt32(c.ToString(), 16), 2).PadLeft(4, '0')).ToArray());
for (int c = 0; c < binString.Length; c++)
{
var asInt = int.Parse(binString[c].ToString());
arr[r, c] = asInt;
ret += asInt;
}
}
return(ret);
}