// Helene Martin, CSE 142
// Demonstrates nested loops where the inner loop uses the outer loop
// counter as part of its bounds.
public class LoopPatterns {
   public static void main(String[] args) {
      triangle();
      dotsNums();
   }
   
   /* display the following triangle:
   *
   **
   ***
   ****
   *****
   */
   public static void triangle() {
      for (int line = 1; line <= 5; line++) {
         for (int star = 1; star <= line; star++) {
            System.out.print("*");
         }
         System.out.println();
      }
   }
   
   
   /*
   Mapping complex patterns to loop counters
   ....1
   ...2
   ..3
   .4
   5
   
   line  dots  -1 * line   -1 * line + 5
   1     4     -1          4
   2     3     -2          3
   3     2     -3          2
   4     1     -4
   5     0
   */
   public static void dotsNums() {
      for (int line = 1; line <= 5; line++) {
         for (int dots = 1; dots <= -1 * line + 5; dots++) {
            System.out.print(".");
         }
         System.out.println(line);
      }
   }
}