68. 4-bit Comparator

How do you plan to solve it?

module maxmin4(
    input [3:0] a,
    input [3:0] b,
    input [3:0] c,
    input [3:0] d,
    output [3:0] max,
    output [3:0] min
);
    wire [3:0] max1, max2, min1, min2;

    // compute the max of a, b, c, d
    assign max1 = (a > b) ? a : b;
    assign max2 = (c > d) ? c : d;
    assign max = (max1 > max2) ? max1 : max2;

    // compute the min of a, b, c, d
    assign min1 = (a < b) ? a : b;
    assign min2 = (c < d) ? c : d;
    assign min = (min1 < min2) ? min1 : min2;
endmodule