Question#1. Given the following code [20 pints]:

public static void recSequence(int n) {

if (n < 0) throw new IllegalArgumentException();

if (n == 5) {

System.out.print("|");

} else {

System.out.print("a");

recSequence(n - 1);

System.out.print("b");

}

}

public static void main(String[] args) {

recSequence (10);

}

}

a) Consider the above call of the recursive method (recSequence) in the main program, trace the execution of recSequence using tables and graphs (PLEASE TRACE EACH ITERATION IN A TABLE OR A GRAPH) [15 points].

b) Write the final output of the above method [5 points].

please solve part a and part b