public static string Day6(string input)
{
string output = "";
if (noInput(input))
{
output = NOINPUT;
return output;
}
string[] instructions = input.Split('\n');
LightPoint[] lightGrid = new LightPoint[(int)10e5];
int index = 0;
for (int x = 0; x < 1000; x++)
{
for (int y = 0; y < 1000; y++)
{
lightGrid[index] = new LightPoint(false, new Point(x,y));
index++;
}
}
foreach (string instruction in instructions)
{
if (instruction.StartsWith("turn off"))
lightGrid = turnOffRange(lightGrid, getRange(instruction));
if (instruction.StartsWith("toggle"))
lightGrid = toggleRange(lightGrid, getRange(instruction));
if (instruction.StartsWith("turn on"))
lightGrid = turnOnRange(lightGrid, getRange(instruction));
}
output += "The number of lights that are lit is: " + lightGrid.Count(x => x.isLit == true) + "\n The total brightness of the grid is: " + lightGrid.Sum(x => x.brightness);
return output;
}
