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]max,min);
wire [3:0] max1= (a>b)?a:b;
wire [3:0] max2= (c>d)?c:d;
assign max=(max1>max2)?max1:max2;

wire [3:0] min1= (a>b)?b:a;
wire [3:0] min2= (c>d)?d:c;
assign min=(min1>min2)?min2:min1;
endmodule