Complete task 1 & 2 for Opendream and add solution.md

[MyoMyatMin]

No description provided.

[Copilot]

Pull Request Overview

This PR implements the solutions for Task 01 (run-length encoding) and Task 02 (thread-safe counter) and adds a consolidated solution.md documenting both.

• Implements encode in rle.py to perform run-length encoding.
• Adds a threading.Lock in buggy_counter.py for thread-safe ID generation.
• Provides solution.md with task descriptions, approaches, and time spent.

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
tasks/01-run-length/python/rle.py	Completed encode implementation and updated docstring
tasks/02-fix-the-bug/python/buggy_counter.py	Introduced a lock to make next_id() thread-safe
solution.md	Added explanations for both tasks with approaches and timing

Comments suppressed due to low confidence (4)

tasks/01-run-length/python/rle.py:5

• [nitpick] Consider using a standard doctest format, for example:

>>> encode('AAB')
'A2B1'

or show the expected output on the next line instead of ->.

    >>> encode("AAB") -> "A2B1"

tasks/01-run-length/python/rle.py:7

• [nitpick] Add unit tests for edge cases (empty string, single character, no repeats) to verify the function covers all scenarios.

    if not s:

solution.md:32

• Mention that you also need to import the threading module at the top of the code snippet for this fix to work.

Use a `threading.Lock` to ensure that only one thread can update `_current` at a time. This guarantees that each call to `next_id()` returns a unique value, even under heavy concurrency.

tasks/02-fix-the-bug/python/buggy_counter.py:7

• The threading module is not imported, causing a NameError. Add import threading at the top of the file.

lock = threading.Lock()