Not able to get rid of IndexOutOfRangeException

Question

static void Main(string[] args)

{

int[] A = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 };

int[] B = { 4, 8, 8, 12, 15 };

int? prev = null;

{

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

{

for (int j = 0; j < A.Length; j++)

{

if (B[i] < prev+1)

{

if (B[i] == A[j-1])

{

Console.WriteLine(B[i]);

i++;

}

if (B[i] == A[j])

{

Console.WriteLine(B[i]);

i++;

}

else

{

Console.WriteLine(0);

}

}

prev = B[i] ;

Console.WriteLine();

}

}

}

}