66. Demultiplexer

How do you plan to solve it?

/*Write your code here*/
module demux1to4(
    input d,
    input [1:0]s,
    output [3:0]y
);

   assign y = (s == 2'b00) ? {3'b000, d} :
               (s == 2'b01) ? {2'b00, d, 1'b0} :
               (s == 2'b10) ? {1'b0, d, 2'b00} :
                              {d, 3'b000};


endmodule