CHALLENGE ACTIVITY 2.12.2: Outputting all combinations Output all combinations of character variables a, b, and c, using this ordering abc acb bac bca cab cba So if a 'x', b ,y, and c = 'z', then the output is: xyz xzy yxz yzxzxyzyx Your code will be tested in three different programs, with a, b, c assigned with X, 'y2', then with .#, 'S.' %, then with '1,'2'3 1 public class OutputCombinations 2 public static void main (String [] args) { 1 test char a; char b; char c passed 4 All tests passed 10 System.out.print("" + a + b + c + "" + a + c + b + "" + b + a + c + "" + b + c + a + "" + c + a + b + "" ?c+b+a); 12 13 14 15 System.out.println(") Run