68. 4-bit Comparator

How do you plan to solve it?

/*Write your code here*/
module maxmin4(
    input [3:0] a,
    input [3:0] b,
    input [3:0] c,
    input [3:0] d,
    output [3:0] max,
    output [3:0] min
);
wire [3:0] max_ab = (a >= b) ? a : b;
wire [3:0] min_ab = (a >= b) ? b : a;

wire [3:0] max_cd = (c >= d) ? c : d;
wire [3:0] min_cd = (c >= d) ? d : c;

assign max = (max_ab >= max_cd) ? max_ab : max_cd;
assign min = (min_ab < min_cd) ? min_ab : min_cd;

endmodule