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@codeflash-ai codeflash-ai bot commented Nov 10, 2025

📄 30,125% (301.25x) speedup for sorter in bubble_sort.py

⏱️ Runtime : 9.03 seconds 29.9 milliseconds (best of 32 runs)

📝 Explanation and details

The given code is implementing the bubble sort algorithm, which is not optimal for sorting. We can significantly increase the speed of this function by switching to a more efficient sorting algorithm like Timsort, which is the default sorting algorithm used in Python. Here's the optimized version.

This utilizes Python's built-in sort method, which is highly efficient with a time complexity of O(n log n).

Correctness verification report:

Test Status
⏪ Replay Tests 🔘 None Found
⚙️ Existing Unit Tests 39 Passed
🔎 Concolic Coverage Tests 🔘 None Found
🌀 Generated Regression Tests 38 Passed
📊 Tests Coverage No coverage data found for sorter
⚙️ Existing Unit Tests and Runtime
  • test_bubble_sort.py
  • test_bubble_sort__perfinstrumented.py
  • test_bubble_sort_conditional.py
  • test_bubble_sort_conditional__perfinstrumented.py
  • test_bubble_sort_import.py
  • test_bubble_sort_import__perfinstrumented.py
  • test_bubble_sort_in_class.py
  • test_bubble_sort_in_class__perfinstrumented.py
  • test_bubble_sort_parametrized.py
  • test_bubble_sort_parametrized__perfinstrumented.py
  • test_bubble_sort_parametrized_loop.py
  • test_bubble_sort_parametrized_loop__perfinstrumented.py
  • test_sorter__unit_test_0.py
  • test_sorter__unit_test_1.py
🌀 Generated Regression Tests and Runtime
import pytest  # used for our unit tests
from code_to_optimize.bubble_sort import sorter

# unit tests

def test_already_sorted_list():
    # Test with a list that is already sorted
    codeflash_output = sorter([1, 2, 3, 4, 5])
    codeflash_output = sorter([10, 20, 30])

def test_reverse_sorted_list():
    # Test with a list that is sorted in reverse order
    codeflash_output = sorter([5, 4, 3, 2, 1])
    codeflash_output = sorter([30, 20, 10])

def test_unsorted_list():
    # Test with a list that is unsorted
    codeflash_output = sorter([3, 1, 4, 5, 2])
    codeflash_output = sorter([10, 5, 20, 15])

def test_single_element_list():
    # Test with a list containing a single element
    codeflash_output = sorter([1])
    codeflash_output = sorter([42])

def test_empty_list():
    # Test with an empty list
    codeflash_output = sorter([])

def test_list_with_duplicates():
    # Test with a list containing duplicate elements
    codeflash_output = sorter([2, 3, 2, 1, 3])
    codeflash_output = sorter([5, 5, 5, 5])

def test_list_with_negative_numbers():
    # Test with a list containing negative numbers
    codeflash_output = sorter([-1, -3, -2, 0, 2])
    codeflash_output = sorter([-5, -10, 0, 5, 10])

def test_list_with_mixed_numbers():
    # Test with a list containing both positive and negative numbers
    codeflash_output = sorter([-10, 5, -20, 15, 0])
    codeflash_output = sorter([3, -1, 4, -5, 2])

def test_list_with_floats():
    # Test with a list containing floating point numbers
    codeflash_output = sorter([2.5, 3.1, 1.8, 2.9])
    codeflash_output = sorter([1.1, 1.01, 1.001])

def test_list_with_strings():
    # Test with a list containing strings
    codeflash_output = sorter(["apple", "banana", "cherry"])
    codeflash_output = sorter(["dog", "cat", "bird"])

def test_large_list():
    # Test with a large list to assess performance
    large_list = list(range(1000, 0, -1))
    sorted_large_list = list(range(1, 1001))
    codeflash_output = sorter(large_list)

def test_non_comparable_elements():
    # Test with a list containing non-comparable elements
    with pytest.raises(TypeError):
        sorter([1, "two", 3])
    with pytest.raises(TypeError):
        sorter([None, 1, 2])

def test_stability():
    # Test with a list to check stability (order of equal elements)
    codeflash_output = sorter([1, 2, 2, 3, 3, 1])
    codeflash_output = sorter([5, 3, 3, 5, 1, 1])
# codeflash_output is used to check that the output of the original code is the same as that of the optimized code.
import pytest  # used for our unit tests
from code_to_optimize.bubble_sort import sorter

# unit tests

# Test basic functionality with sorted list
def test_sorted_list():
    codeflash_output = sorter([1, 2, 3, 4, 5])
    codeflash_output = sorter(['a', 'b', 'c'])

# Test basic functionality with reverse sorted list
def test_reverse_sorted_list():
    codeflash_output = sorter([5, 4, 3, 2, 1])
    codeflash_output = sorter(['z', 'y', 'x'])

# Test basic functionality with unsorted list
def test_unsorted_list():
    codeflash_output = sorter([3, 1, 4, 2, 5])
    codeflash_output = sorter(['b', 'a', 'd', 'c'])

# Test edge case with empty list
def test_empty_list():
    codeflash_output = sorter([])

# Test edge case with single element list
def test_single_element_list():
    codeflash_output = sorter([1])
    codeflash_output = sorter(['a'])

# Test edge case with repeated elements
def test_repeated_elements():
    codeflash_output = sorter([2, 3, 2, 1, 1])
    codeflash_output = sorter(['a', 'b', 'a', 'c', 'b'])

# Test edge case with negative numbers
def test_negative_numbers():
    codeflash_output = sorter([-1, -3, -2, 0, 2])

# Test edge case with mixed positive and negative numbers
def test_mixed_numbers():
    codeflash_output = sorter([3, -1, 2, -3, 0])

# Test special case with all identical elements
def test_identical_elements():
    codeflash_output = sorter([5, 5, 5, 5])

# Test special case with large numbers
def test_large_numbers():
    codeflash_output = sorter([1000000, 500000, 1000001])

# Test performance with large list
def test_large_list():
    large_list = list(range(1000, 0, -1))
    sorted_list = list(range(1, 1001))
    codeflash_output = sorter(large_list)

# Test robustness with non-comparable elements
def test_non_comparable_elements():
    with pytest.raises(TypeError):
        sorter([1, 'a', 3])

# Test edge case with floats
def test_floats():
    codeflash_output = sorter([3.1, 2.2, 5.5, 4.4])

# Test edge case with mixed integers and floats
def test_mixed_integers_floats():
    codeflash_output = sorter([1, 2.2, 3, 0.5])
# codeflash_output is used to check that the output of the original code is the same as that of the optimized code.

To edit these changes git checkout codeflash/optimize-sorter-mht7cqd3 and push.

Codeflash

The given code is implementing the bubble sort algorithm, which is not optimal for sorting. We can significantly increase the speed of this function by switching to a more efficient sorting algorithm like Timsort, which is the default sorting algorithm used in Python. Here's the optimized version.

 

This utilizes Python's built-in `sort` method, which is highly efficient with a time complexity of O(n log n).
@codeflash-ai codeflash-ai bot requested a review from HeshamHM28 November 10, 2025 13:53
@codeflash-ai codeflash-ai bot added the ⚡️ codeflash Optimization PR opened by CodeFlash AI label Nov 10, 2025
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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

If you approve, it will be merged into this PR (branch codeflash/optimize-sorter-mht7cqd3).

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

If you approve, it will be merged into this PR (branch codeflash/optimize-sorter-mht7cqd3).

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

If you approve, it will be merged into this PR (branch codeflash/optimize-sorter-mht7cqd3).

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

If you approve, it will be merged into this PR (branch codeflash/optimize-sorter-mht7cqd3).

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

If you approve, it will be merged into this PR (branch codeflash/optimize-sorter-mht7cqd3).

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codeflash-ai bot commented Nov 11, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

If you approve, it will be merged into this PR (branch codeflash/optimize-sorter-mht7cqd3).

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codeflash-ai bot commented Nov 18, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 18, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 18, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 18, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A dependent PR with the suggested changes has been created. Please review:

If you approve, it will be merged into this PR (branch codeflash/optimize-sorter-mht7cqd3).

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codeflash-ai bot commented Nov 18, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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codeflash-ai bot commented Nov 18, 2025

⚡️ Codeflash found optimizations for this PR

📄 4211531.56 (42115.32) speedup for sorter in code_to_optimize/bubble_sort.py

⏱️ Runtime : 1070554.63 25.42 (best of undefined runs)

A new Optimization Review has been created.

🔗 Review here

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