17. Binary to Gray Code Converter

How do you plan to solve it?

/*Write your code here*/
module bin2gray4(
    input [3:0]bin_in,
    output [3:0]gray_out
);
/*assign gray_out[3] = bin_in[3];                 // MSB remains same
    assign gray_out[2] = bin_in[3] ^ bin_in[2];
    assign gray_out[1] = bin_in[2] ^ bin_in[1];
    assign gray_out[0] = bin_in[1] ^ bin_in[0]; */
assign gray_out = bin_in ^ (bin_in >> 1);

endmodule