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 = {bin_in[3],bin_in[3]^bin_in[2],bin_in[2]^bin_in[1],bin_in[1]^bin_in[0]};

endmodule