66. Demultiplexer

How do you plan to solve it?

/*Write your code here*/
module demux1to4 (input d,
input [1:0]s,
output reg [3:0]y);
integer i;
always @(*) begin
    for(i=0;i<4;i++) begin
        y[i] = (i==s)?d:1'b0;
    end
end
endmodule