9. XOR Gate Using Basic Gates

How do you plan to solve it?

using module instantation

// ============================================================
// Basic Gates (given)
// ============================================================
module and_gate(input a, b, output y);
    assign y = a & b;
endmodule

module or_gate(input a, b, output y);
    assign y=a|b;

endmodule

module not_gate(input a, output y);
   assign y=~a;
endmodule

// ============================================================
// XOR Gate
// ============================================================
module xor_gate (
    input  a, b,
    output y
);
wire not_b,and1_out,not_a,and2_out;
   not_gate g1(b,not_b);
   and_gate g2(a,not_b,and1_out);
   not_gate g3(a,not_a);
   and_gate g4(not_a,b,and2_out);
   or_gate g5(and1_out,and2_out,y);
endmodule