patterns_03.md

Alternating Rectangle Pattern

Instructions

Your task is to extend the functionality of the generatePattern(style, dimensions) function to support a new pattern type: alternating rectangle.

For this assignment, the style parameter will be "alternating-rectangle", and the dimensions parameter will be an array [columns, rows] where:

• columns is the number of columns in the rectangle.
• rows is the number of rows in the rectangle.

Pattern Description

• Each row alternates between being completely filled with * characters and - characters:
  • Odd-numbered rows (1st, 3rd, 5th, etc.) are filled with *.
  • Even-numbered rows (2nd, 4th, 6th, etc.) are filled with -.
• If either dimension is 0 (e.g., [0, X] or [X, 0]), the rectangle is considered empty, and the function should return an empty string.

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Examples

generatePattern("alternating-rectangle", [3, 3]);
// Output:
***
---
***

generatePattern("alternating-rectangle", [5, 4]);
// Output:
*****
-----
*****
-----

generatePattern("alternating-rectangle", [6, 2]);
// Output:
******
------

generatePattern("alternating-rectangle", [4, 1]);
// Output:
****

generatePattern("alternating-rectangle", [0, 5]);
// Output: (empty string)

generatePattern("alternating-rectangle", [7, 0]);
// Output: (empty string)

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Notes

• The alternating rectangle should properly handle edge cases:
  • If rows is 1, the rectangle will consist of a single row of *.
  • If columns is 1, the rectangle will alternate between a single * and - for each row.
  • If columns and rows are both greater than 1, the pattern alternates row by row as described.
• Each line of the output should be separated by a newline character (\n).
• Ensure that the function works for both small and large dimensions.

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patterns_2.md

Here’s the updated Markdown with the 5x1 example included:

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Hollow Rectangle

Instructions

Your task is to extend the functionality of the generatePattern(style, dimensions) function to support a new pattern type: hollow rectangle.

For this assignment, the style parameter will be "hollow-rectangle", and the dimensions parameter will be an array [columns, rows] where:

• columns is the number of columns in the rectangle.
• rows is the number of rows in the rectangle.

Pattern Description

• The first and last rows of the rectangle should be completely filled with * characters.
• All rows in between (if any) should begin and end with a * and have spaces ( ) in between.
• If either dimension is 0 (e.g., [0, X] or [X, 0]), the rectangle is considered empty, and the function should return an empty string.

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Examples

generatePattern("hollow-rectangle", [4, 3]);
// Output:
****
*  *
****

generatePattern("hollow-rectangle", [5, 4]);
// Output:
*****
*   *
*   *
*****

generatePattern("hollow-rectangle", [6, 2]);
// Output:
******
******

generatePattern("hollow-rectangle", [5, 1]);
// Output:
*****

generatePattern("hollow-rectangle", [1, 5]);
// Output:
*
*
*
*
*

generatePattern("hollow-rectangle", [0, 3]);
// Output: (empty string)

generatePattern("hollow-rectangle", [7, 0]);
// Output: (empty string)

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Notes

• The hollow rectangle should properly handle edge cases:
  • If rows is 1, the rectangle will just be a single row of * characters.
  • If columns is 1, the rectangle will be a vertical line of * characters (one per row).
  • If columns and rows are both greater than 1, the hollow pattern will appear as described.
• Each line of the output should be separated by a newline character (\n).
• Ensure that the function works for both small and large dimensions.

Happy coding!

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