public static string B(string input)
{
List <string> inputList = input.Split(new string[] { Environment.NewLine }, StringSplitOptions.None).ToList();
IntVector2 position = new IntVector2(0, 0);
IntVector2 waypoint = new IntVector2(10, -1);
foreach (string line in inputList)
{
char direction = line[0];
int magnitude = Convert.ToInt32(line.Substring(1));
switch (direction)
{
case 'N':
waypoint = waypoint.North(magnitude);
break;
case 'E':
waypoint = waypoint.East(magnitude);
break;
case 'S':
waypoint = waypoint.South(magnitude);
break;
case 'W':
waypoint = waypoint.West(magnitude);
break;
case 'F':
position = position.Add(waypoint.Multiply(magnitude));
break;
case 'L':
while (magnitude > 0)
{
waypoint = waypoint.Left();
magnitude -= 90;
}
break;
case 'R':
while (magnitude > 0)
{
waypoint = waypoint.Right();
magnitude -= 90;
}
break;
default:
throw new Exception("Invalid direction: " + direction);
}
//Console.WriteLine("Position: " + position + ", Direction: " + facing);
}
return(position.Distance(new IntVector2(0, 0)).ToString());;
}
internal IntVector2 Multiply(int quantity)
{
return(IntVector2.Multiply(this, quantity));
}
