a. Generate the binary reflexive Gray code of order 4 b. Trace the following nonrecursive algorithm to generate the binary reflexive Gray code of order 4. Start with the n-bit string of all O's. For i -1, 2, bit b in the previous bit string, where b is the position of the least significant 1 in the binary representation of i. 21-1, generate the ith bit string by flipping