68. 4-bit Comparator

How do you plan to solve it?

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

wire [3:0]max_1,max_2,min_1,min_2;

assign max_1=(a>b)?a:b;
assign min_1=(a<b)?a:b; //it is min so a
assign max_2=(c>d)?c:d;
assign min_2=(c<d)?c:d;

assign max=(max_1>max_2)?max_1:max_2;
assign min=(min_1<min_2)?min_1:min_2;
endmodule