| 1 | /** |
| 2 | This class describes triangle objects that can be displayed |
| 3 | as shapes like this: |
| 4 | [] |
| 5 | [][] |
| 6 | [][][] |
| 7 | */ |
| 8 | public class Triangle |
| 9 | { |
| 10 | /** |
| 11 | Constructs a triangle. |
| 12 | @param aWidth the number of [] in the last row of the triangle. |
| 13 | */ |
| 14 | public Triangle(int aWidth) |
| 15 | { |
| 16 | width = aWidth; |
| 17 | } |
| 18 | |
| 19 | /** |
| 20 | Computes a string representing the triangle. |
| 21 | @return a string consisting of [] and newline characters |
| 22 | */ |
| 23 | public String toString() |
| 24 | { |
| 25 | String r = ""; |
| 26 | for (int i = 1; i <= width; i++) |
| 27 | { |
| 28 | // make triangle row |
| 29 | for (int j = 1; j <= i; j++) |
| 30 | r = r + "[]"; |
| 31 | r = r + "\n"; |
| 32 | } |
| 33 | return r; |
| 34 | } |
| 35 | |
| 36 | private int width; |
| 37 | } |