67. Decoder

How do you plan to solve it?

module decoder3to8 (
    input [2:0] s,
    output reg[7:0] y
);

    always @(*) begin
        case(s)
            3'b000: y = 8'd1;
            3'b001: y = 8'd2;
            3'b010: y = 8'd4;
            3'b011: y = 8'd8;
            3'b100: y = 8'd16;
            3'b101: y = 8'd32;
            3'b110: y = 8'd64;
            3'b111: y = 8'd128;
            default: y = 8'd0;
        endcase
    end

endmodule