17. Binary to Gray Code Converter

How do you plan to solve it?

module bin2gray4 (
    input [3:0] bin_in,
    output [3:0] gray_out
);
    assign gray_out[3] =   bin_in[3];
    assign gray_out[2] = ^ bin_in[3:2];
    assign gray_out[1] = ^ bin_in[2:1];
    assign gray_out[0] = ^ bin_in[1:0];


endmodule