Ms. O'Keefe's loop challenge

Main.java

/*

 Write a program to generate this output:
 
 #
 $#
 *$#
 $*$#
 *$*$#
 $*$*$#
 *$*$*$#
 $*$*$*$#
 *$*$*$*$#
 $*$*$*$*$#

*/

class Main {
  public static void main(String[] args) {
    String s = "#";
    char c = '$';
    for (int i = 0; i < 10; i++) {
      System.out.println(s);
      s = c + s;
      for (int j = 0; j < 6; j++) {
        c += ((i & 1) - 0.5) * -2;
      }
    }
  }
}