68. 4-bit Comparator

How do you plan to solve it?

module maxmin4(input [3:0] a,b,c,d, output[3:0] max,min);

    wire [3:0] max_ab, min_ab;
    wire [3:0] max_cd, min_cd;

    // Compare a and b
    assign max_ab = (a > b) ? a : b;
    assign min_ab = (a > b) ? b : a;

    // Compare c and d
    assign max_cd = (c > d) ? c : d;
    assign min_cd = (c > d) ? d : c;

    // Final comparisons
    assign max = (max_ab > max_cd) ? max_ab : max_cd;
    assign min = (min_ab < min_cd) ? min_ab : min_cd;

endmodule