src/main/java/MainExercises.java

@@ -19,10 +19,17 @@ public class MainExercises
     the output has to be a two-dimensional array of characters, so don't just print the triangle!
  */
     public char[][] generateTriangle(int n) {
-
-        // todo
-        return null;
-
+        char[][] triangle = new char[n][];
+        for(int i = 0; i < n; i++) {
+            triangle[i] = new char[i+1];
+            for(int j = 0; j <= i; j++){
+                if(j == 0 || i == n - 1 || i == j)
+                    triangle[i][j] = '*';
+                else
+                    triangle[i][j] = ' ';
+            }
+        }
+        return triangle;
     }