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
);
integer i;
reg [3:0] temp;
always @* begin
temp = 4'd0;
for(i=0;i<4;i=i+1) begin
   if(s==i) temp[i] =d; 
end
end
assign y = temp;
endmodule