using System;

public class Program

{//mark 7/11

    public static void Main()

    {

        char[] sensor=new char[11]{'y','y','g','y','y','r','r','y','y','y','y'};

        PrintArr(traffic(sensor));

    }

    public static bool[] traffic(char[] color){

        bool[] driving= new bool[color.Length];

        char lastRG;//remembers last state of light

        if(color[0]=='r'){

            driving[0]=false;

            lastRG='r';

        }else if(color[0]=='g'){

            driving[0]=true;

            lastRG='g';

        }else{

            driving[0]=false;

            lastRG='y';

        }

        for(int i=1;i<color.Length;i++){

            if(color[i]=='r'){

                driving[i]=false;

                lastRG='r';

            }else if(color[i]=='g'){

                driving[i]=true;

                lastRG='g';

            }else if((color[i]=='y')&&(lastRG=='r')){

                driving[i]=true;

            }else if((color[i]=='y')&&(lastRG=='g')){

                driving[i]=false;

            }else if((color[i]=='y')&&(lastRG=='y')){

                driving[i]=false;

            }

        }

        return driving;

    }

    public static void PrintArr<T>(T[] arr)

    {// enter and exit are trivial

        Console.Write("[");

        for (int i = 0; i < arr.Length; i++)

        {

            Console.Write(arr[i]);

            if (i < arr.Length - 1)

            {

                Console.Write(", ");

            }

        }

        Console.WriteLine("]"); 

    }

}

​