Implement Recursive Array Flattening Function with Comprehensive Tests

[laura-ct]

Implement Recursive Array Flattening Function with Comprehensive Tests

Description

Task

Create Array Flattening Function

Acceptance Criteria

• Function should handle arrays of any nesting depth
• Should preserve order of elements
• Should handle empty arrays and non-array elements
• Should work with mixed data types

Summary of Work

Overview

This pull request implements a robust, recursive array flattening function that can handle nested lists of arbitrary depth and mixed types.

Changes Made

1. Created src/array_utils.py:

   • Implemented flatten_array() function
   • Supports recursive flattening of nested lists
   • Handles mixed type inputs
   • Preserves original order of elements
   • Handles edge cases like strings, non-list inputs, and empty lists

2. Created tests/test_array_utils.py:

   • Added 8 comprehensive test cases
   • Covered various scenarios including:
     • Simple list flattening
     • Nested list flattening
     • Deeply nested list flattening
     • Mixed type lists
     • Empty lists
     • Non-list inputs
     • String handling

Implementation Details

• Function uses a recursive approach to flatten nested lists
• Type hints added for improved type safety
• Docstring provides clear function documentation
• Handles type-specific edge cases (e.g., strings treated as single elements)

Testing Approach

• Used pytest for test implementation
• Covered multiple flattening scenarios
• Ensured comprehensive input type coverage
• All tests pass successfully

Acceptance Criteria

✅ Function flattens nested lists of arbitrary depth
✅ Preserves original order of elements
✅ Handles mixed type inputs
✅ Provides clear error handling
✅ Comprehensive test coverage

Notes

• The implementation is memory-efficient and works with lists of any nesting level
• Performance is O(n) where n is the total number of elements

Test Results

• 8/8 tests passed
• No errors or warnings detected

Changes Made

• Implemented recursive array flattening function
• Added comprehensive test suite
• Included type hints and docstrings
• Handled edge cases and mixed type inputs

Tests

• Test simple list flattening
• Test nested list flattening
• Test deeply nested list
• Test mixed type lists
• Test empty list
• Test non-list input
• Test string input

Signatures

Staking Key

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Public Key

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