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 reg [3:0]max,min

);
reg [3:0]max1,max2,min1,min2;
always @(*)begin
    max1=(a>=b)?a:b;
    min1=(a<b)?a:b;

    max2=(c>=d)?c:d;
    min2=(c<d)?c:d;

    max=(max1>=max2)?max1:max2;
    min=(min1<min2)?min1:min2;
end
endmodule