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);
// assign min = (a<b)? ((a<c)?a:c) : ((b<c)?b:c) ;
// assign max = (a>b)? ((a>c)?a:c) : ((b>c)?b:c) ;
wire [3:0]minab,maxab;
wire [3:0]mincd,maxcd;
assign minab = (a<b)?a:b;
assign maxab = (a>b)?a:b;
assign mincd = (c<d)?c:d;
assign maxcd = (c>d)?c:d;
assign min = (minab<mincd)? minab : mincd;
assign max = (maxab>maxcd)? maxab : maxcd;
endmodule