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] max1, max2, min1, min2;

assign max1 = (a > b) ? a : b;
assign min1 = (a > b) ? b : a;
assign max2 = (c > d) ? c : d;
assign min2 = (c > d) ? d : c;
assign max = (max1 > max2) ? max1 : max2;
assign min = (min1 > min2) ? min2 : min1;

endmodule