Brainstorming 03: Nested For and While Loops

 Solve these Pattern questions using For Loop and While Loop ( Both ).

Exercise 1: Simple Triangle

Question: Print a right-angled triangle of stars.

Output:

*
**
***
****
*****

Exercise 2: Inverted Triangle

Question: Print an inverted right-angled triangle of stars.

Output:

*****
****
***
**
*

Exercise 3: Diamond Pattern

Question: Print a diamond pattern of stars.

Output:

    *
   ***
  *****
 *******
  *****
   ***
    *

Exercise 4: Hollow Square

Question: Print a hollow square of stars.

Output:

*****
*   *
*   *
*   *
*****

Exercise 5: Pyramid Pattern

Question: Print a pyramid pattern of stars.

Output:

    *
   ***
  *****
 *******

Exercise 6: Pascal's Triangle

Question: Print Pascal's Triangle.

Output:

            1
           1 1
          1 2 1
         1 3 3 1
        1 4 6 4 1

Exercise 7: Number Pyramid

Question: Print a number pyramid.

Output:

    1
   2 3 4
  5 6 7 8 9
 10 11 12 13 14 15
16 17 18 19 20 21 22

Exercise 8: Hourglass Pattern

Question: Print an hourglass pattern.

Output:

*****
 ***
  *
 ***
*****

Exercise 9: Checkerboard Pattern

Question: Print a checkerboard pattern/zigzag pattern.

Output:

* * * * *
 * * * * *
* * * * *
 * * * * *
* * * * *

Exercise 10: Right-Angled Triangle with Numbers

Question: Print a right-angled triangle of numbers, starting from 1 at the top.

Output:

1 
2 3 
4 5 6 
7 8 9 10 
11 12 13 14 15