⭐ BASIC LEVEL (1–5)

1. Right-Angled Triangle of Stars

Input: 5 Output:

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

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2. Inverted Right-Angled Triangle

Input: 5 Output:

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

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3. Number Triangle (1 to n)

Input: 5 Output:

1
12
123
1234
12345

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4. Character Triangle (A pattern)

Input: 5 Output:

A
AB
ABC
ABCD
ABCDE

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5. Hollow Square of Stars

Input: 5 Output:

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

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🔹 INTERMEDIATE LEVEL (6–10)

6. Pyramid Pattern

Input: 5 Output:

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

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7. Inverted Pyramid

Input: 5 Output:

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

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8. Diamond Pattern

Input: 5 Output:

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

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9. Pascal’s Triangle (Numbers)

Input: 5 Output:

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

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10. Floyd’s Triangle

Input: 5 Output:

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

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🔸 ADVANCED LEVEL (11–15)

11. Butterfly Pattern

Input: 4 Output:

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

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12. Palindromic Number Pyramid

Input: 5 Output:

    1
   121
  12321
 1234321
123454321

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13. Zig-Zag Star Pattern

Input: 3 Output:

  *     *
 * *   * *
*   * *   *

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14. Hollow Diamond in a Square

Input: 5 Output:

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

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15. Hourglass Pattern

Input: 5 Output:

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

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