Commit Graph

455 Commits

Author SHA1 Message Date
Ed
a8dfd403f6
Add new algorithm index_2d_array_in_1d (#10973)
* Add new algorithm index_2d_array_in_1d

* Add doctest for iter function

* The power of dataclasses

* Update index_2d_array_in_1d.py

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Co-authored-by: Christian Clauss <cclauss@me.com>
2023-10-26 16:33:42 +02:00
Suyash Dongre
29b8ccdc2f
Added doctest to hash_table.py (#10984) 2023-10-26 14:12:28 +02:00
Neha
6497917352
Added Kth largest element algorithm (#10687)
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* neha3423

* neha3423

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* Added test case for tuple

* Update kth_largest_element.py

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2023-10-26 10:54:30 +02:00
AdityaAtoZ
3d0a409ce1
Improved Equilibrium Index of an Array. (#10899)
* Improved Equilibrium Index of an Array.

This is the modifications made to the original code:

1. Create Doctest Instructions: Python "doctest" can be executed by running the following command: python -m doctest -v equilibrium_index.py.

2. Deleted Argument {size}: Deleted the `size` argument because `len(arr)} allows the array's length to be determined inside the function, simplifying and improving the readability of the function signature.

3. Used {enumerate}: To improve code readability and indicate that we're working with element-index pairs, we iterated through the array using both elements and their indices using the `enumerate` function.

4. Optimized the Loop: To prevent pointless additions, the loop was improved by initializing {left_sum} with the value of the first element (arr[0]). Furthermore, since the beginning and last items (0 and size - 1) cannot be equilibrium indices, there is no need to check them, saving further computations.

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2023-10-25 16:33:35 -04:00
Christian Clauss
c2c6cb0f5c
Add dataclasses to binary_search_tree.py (#10920) 2023-10-25 16:28:23 -04:00
Christian Clauss
eb17fcf8f5
Use dataclasses in circular_linked_list.py (#10884)
* Use dataclasses in circular_linked_list.py

* updating DIRECTORY.md

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2023-10-24 08:45:36 -04:00
Gourav Raj
481aff7928
Add Mirror a Binary Tree solution (#9534)
* Add `Invert a Binary Tree` solution

* Add type

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* Add `doctest`

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* Add `test` changes

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* Fix lint errors

* Fix precommit errors

* Update and rename invert_binary_tree.py to mirror_binary_tree.py

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2023-10-24 09:54:38 +02:00
Aqib Javid Bhat
30122062b9
Add Floyd's Cycle Detection Algorithm (#10833)
* Add Floyd's Cycle Detection Algorithm

* Add tests for add_node function

* Apply suggestions from code review

* Update floyds_cycle_detection.py

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2023-10-23 13:56:43 -04:00
Precious C. Jacob
c92e86bd79
Add tests to data_structures/linked_list/swap_nodes.py (#10751)
* Added doctests to the swap_nodes file under linkedlist data structure

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* Added doctests to the swap_nodes file under linkedlist data structure

* Added doctests to the swap_nodes file under linkedlist data structure

* Added doctests to the swap_nodes file under linkedlist data structure

* Update swap_nodes.py

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2023-10-22 01:33:49 +02:00
Christian Clauss
26ffad9d17
Simplify is_bst.py (#10627)
* Simplify is_bst.py

* updating DIRECTORY.md

* Update is_bst.py

* Rename is_bst.py to is_sorted.py

* updating DIRECTORY.md

* Update data_structures/binary_tree/is_sorted.py

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2023-10-19 13:31:51 -04:00
Anubhavpandey27
09c2b2d006
Add arrays/sudoku_solver.py (#10623)
* Create Sudoku_Solver

Each of the digits 1-9 must occur exactly once in each row.
Each of the digits 1-9 must occur exactly once in each column.
Each of the digits 1-9 must occur exactly once in each of the 9 3x3 sub-boxes of the grid.
The '.' character indicates empty cells.

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* Rename Sudoku_Solver to sudoku_solver.py

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* Update sudoku_solver.py

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2023-10-17 19:07:40 +02:00
aryandgandhi
b5786c87d8
update segmenttree docstrings Fixes #9943 (#9975)
* update docstrings

* update docstrings

* update docstrings
2023-10-17 03:25:07 +02:00
Adarsh Sidnal
fcea18c9f0
Added an algorithm transfrom bst to greater sum tree (#9777)
* Added an algorithm transfrom bst to greater sum tree

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* Update and rename transform_bst_sum_tree.py to is_sum_tree.py

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2023-10-17 00:56:14 +02:00
halfhearted
1e468c1028
Floor and ceil in Binary search tree added (#10432)
* earliest deadline first scheduling algo added

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* earliest deadline first scheduling algo added

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* ceil and floor and bst

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* ceil and floor and bst 2

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* ceil and floor and bst 3

* Update and rename floor_ceil_in_bst.py to floor_and_ceiling.py

* Delete scheduling/shortest_deadline_first.py

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2023-10-16 19:12:33 +02:00
Vinayak Upadhyay
778e2010d6
Added functionality to calculate the diameter of given binary tree (#10526)
* Added code to find diameter of given binary tree

* Modified diameter_of_binary_tree file

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* Update diameter_of_binary_tree.py

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* Update diameter_of_binary_tree.py

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2023-10-16 18:46:44 +02:00
Saswat Susmoy
c15dda405a
Update basic_binary_tree.py (#10388)
* Update basic_binary_tree.py

* Update basic_binary_tree.py

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2023-10-16 16:43:53 +02:00
Christian Clauss
7acf4bf73b
Rename binary_tree_traversals.md to README.md (#10599) 2023-10-16 10:16:09 -04:00
hollowcrust
3d6f3c4188
Added data_structures/arrays/sparse_table.py (#10437)
* Create sparse_table.py

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* Descriptive names for variables

* Fix ruff check error

* Update sparse_table.py

* Add comments, change variable names

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* Fix typo

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2023-10-15 22:13:27 +02:00
K Anamithra
b2636d90b3
added implementing stack using two queues (#10076)
* added implementing stack using two queues

* Update Stack using two queues

* Update stack_using_two_queues.py

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2023-10-15 18:41:29 +02:00
Pranavkumar Mallela
b94cdbab1a
add find triplets with 0 sum (3sum) (#10040)
* add find triplets with 0 sum (3sum)

* Update find_triplets_with_0_sum.py

* Update find_triplets_with_0_sum.py

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2023-10-12 21:51:53 +02:00
Siddharth Warrier
09ce6b23d7
Count pairs with given sum (#10282)
* added power_of_4

* deleted power_of_4

* added pairs_with_given_sum

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* updated the comment

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* corrected import formatting

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* Update pairs_with_given_sum.py

* Update data_structures/arrays/pairs_with_given_sum.py

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2023-10-12 11:08:55 +02:00
Christian Clauss
3f094fe49d
Ruff pandas vet (#10281)
* Python linting: Add ruff rules for Pandas-vet and Pytest-style

* updating DIRECTORY.md

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2023-10-11 14:30:02 -04:00
hollowcrust
672fda9130
Fix bug and edit doctests for infix_to_prefix_conversion (#10259)
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2023-10-11 11:00:49 +02:00
hollowcrust
5be5d21bed
Add tests for infix_2_postfix() in infix_to_prefix_conversion.py (#10095)
* Add doctests, exceptions, type hints and fix bug for infix_to_prefix_conversion.py

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2023-10-10 18:52:53 +02:00
Christian Clauss
844270c6e9
Remove backslashes from is_palindrome.py (#10169)
@SaiHarshaK Fixes https://github.com/TheAlgorithms/Python/pull/10081#discussion_r1349651289
2023-10-10 06:42:07 +13:00
Sai Harsha Kottapalli
12e8e9ca87
Add DocTests to is_palindrome.py (#10081)
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2023-10-09 14:06:16 +02:00
halfhearted
2d02500332
equilibrium index in an array (#9856)
* equilibrium index in an array

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* equilibrium index in an array

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2023-10-09 08:44:49 +13:00
Christian Clauss
d0c54acd75
Use dataclasses in singly_linked_list.py (#9886) 2023-10-06 15:31:11 +13:00
JeevaRamanathan
17af644449
Symmetric tree (#9871)
* symmectric tree

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* doc test added for symmetric, asymmetric

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Christian Clauss
5869fda742
print reverse: A LinkedList with a tail pointer (#9875)
* print reverse: A LinkedList with a tail pointer

* updating DIRECTORY.md

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2023-10-06 10:55:13 +13:00
Wei Jiang
55ee273419
[bug fixing] Edge case of the double ended queue (#9823)
* fix the edge case of the double ended queue pop the last element

* refactoring doc

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2023-10-05 10:00:48 -04:00
Bama Charan Chhandogi
d5806258d4
add median of two sorted array (#9386)
* add median of two sorted array

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2023-10-04 20:18:59 +02:00
halfhearted
d74349793b
Arunsiva003 patch 1 flatten tree (#9695)
* infix to prefix missing feature added

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* from the beginning

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* flatten binary tree to linked list - 1

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2023-10-04 18:39:28 +02:00
Tianyi Zheng
dfdd78135d
Fix mypy errors in circular_linked_list.py and swap_nodes.py (#9707)
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* Fix mypy errors in circular_linked_list.py

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Siddhant Totade
3fd3497f15
Add Comments (#9668)
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2023-10-04 11:25:26 +02:00
Bama Charan Chhandogi
e798e5acde
add reverse k group linkedlist (#9323)
* add reverse k group linkedlist

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2023-10-02 02:19:39 +02:00
aryan1165
18cdbc4165
binary_search_traversals.py made memory-friendly using generators. Fixes #8725 completely. (#9237)
* Made binary tree memory-friendly using generators based travels. Fixes
#8725

* Made binary tree memory-friendly using generators based travels. Fixes
#8725

* Fixed pre-commit errors
2023-10-01 12:54:05 -04:00
Muhammad Umer Farooq
bacad12a1f
[NEW ALGORITHM] Rotate linked list by K. (#9278)
* Rotate linked list by k.

* Rotate linked list by k.

* updated variable name.

* Update data_structures/linked_list/rotate_linked_list_by_k.py

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* Update data_structures/linked_list/rotate_linked_list_by_k.py

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* Update data_structures/linked_list/rotate_linked_list_by_k.py

* Make Node a dataclass

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2023-10-01 18:11:16 +02:00
aryan1165
eaa87bd791
Made binary tree memory-friendly using generators based travels. Fixes (#9208)
#8725
2023-10-01 04:43:48 -04:00
aryan1165
320d895b86
Fixed permute_recursive() by passing nums.copy(). Fixes #9014 (#9161)
* Fixes #9014

* Fixed permute_recursive() by passing nums.copy()
2023-10-01 00:06:15 -04:00
Saksham Saha
c9b4b8002f
Added an add at position subroutiune to linked list (#9020)
* added addAtPosition to simple linked list

* added addAtPosition to simple linked list

* modified the add function to take an optional position command

* fixed type safety errors:

* fixed type safety errors:

* fixed type safety errors:

* fixed type safety errors:

* fixed size error

* fixed size error

* added doctest and updates the else after checking if posiiton argument less than 0 or not

* added doctest and updates the else after checking if posiiton argument less than 0 or not

* fixed the contributing.md mistake

* added doctest for out of bounds position value, both negative and positive
2023-09-08 08:20:28 -04:00
pre-commit-ci[bot]
421ace81ed
[pre-commit.ci] pre-commit autoupdate (#9013)
* [pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.0.285 → v0.0.286](https://github.com/astral-sh/ruff-pre-commit/compare/v0.0.285...v0.0.286)
- [github.com/tox-dev/pyproject-fmt: 0.13.1 → 1.1.0](https://github.com/tox-dev/pyproject-fmt/compare/0.13.1...1.1.0)

* updating DIRECTORY.md

* Fis ruff rules PIE808,PLR1714

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2023-08-29 15:18:10 +02:00
Arijit De
0a9438071e
Updated postfix_evaluation.py to support Unary operators (#8787)
* Updated postfix_evaluation.py to support Unary operators and floating point numbers Fixes #8754 and #8724

Also merged evaluate_postfix_notations.py and postfix_evaluation.py into postfix_evaluation.py

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* Updated postfix_evaluation.py to support Unary operators and floating point numbers. Fixes #8754 and formatted code to pass ruff and black test.

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* Fixed return type hinting required by pre commit for evaluate function

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* Changed line 186 to return only top of stack instead of calling the get_number function as it was converting float values to int, resulting in data loss. Fixes #8754 and #8724

Signed-off-by: Arijit De <arijitde2050@gmail.com>

* Made the requested changes

Also changed the code to make the evaluate function first convert all the numbers and then process the valid expression.

* Fixes #8754, #8724 Updated postfix_evaluation.py

postfix_evaluation.py now supports Unary operators and floating point numbers.
Also merged evaluate_postfix_notations.py and postfix_evaluation.py into postfix_evaluation.py which fixes #8724. Added a doctest example with unary operator.

* Fixes #8754, #8724 Updated postfix_evaluation.py

postfix_evaluation.py now supports Unary operators and floating point numbers.
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* Fixes #8754, #8724 Updated the parse_token function of postfix_evaluation.py

ostfix_evaluation.py now supports Unary operators and floating point numbers.
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* Fixes #8754, #8724 Updated postfix_evaluation.py

postfix_evaluation.py now supports Unary operators and floating point numbers.
Also merged evaluate_postfix_notations.py and postfix_evaluation.py into postfix_evaluation.py which fixes #8724. Added a doctest example with unary operator and invalid expression.

* Update postfix_evaluation.py

* Update postfix_evaluation.py

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* Update postfix_evaluation.py

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2023-08-23 14:36:59 +02:00
Caeden Perelli-Harris
fceacf977f
Fix type errors in permutations (#9007)
* updating DIRECTORY.md

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* Apply suggestions from code review

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* fix(permutations): Call permute_recursive

* fix(permutations): Correct permutations order

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2023-08-22 02:33:47 -07:00
isidroas
efaf526737
BST and RSA doctest (#8693)
* rsa key doctest

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* moved is_right to property

* is right test

* fixed rsa doctest import

* Test error when deleting non-existing element

* fixing ruff EM102

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* child instead of children

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2023-08-15 16:04:53 -07:00
Tianyi Zheng
ae0fc85401
Fix ruff errors (#8936)
* Fix ruff errors

Renamed neural_network/input_data.py to neural_network/input_data.py_tf
because it should be left out of the directory for the following
reasons:

1. Its sole purpose is to be used by neural_network/gan.py_tf, which is
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2. It was taken directly from TensorFlow's codebase and is actually
   already deprecated. If/when neural_network/gan.py_tf is eventually
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   to not use neural_network/input_data.py anyway.

* updating DIRECTORY.md

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2023-08-09 13:25:30 +05:30
AmirSoroush
ce218c57f1
fixes #8673; Add operator's associativity check for stacks/infix_to_p… (#8674)
* fixes #8673; Add operator's associativity check for stacks/infix_to_postfix_conversion.py

* fix ruff N806 in stacks/infix_to_postfix_conversion.py

* Update data_structures/stacks/infix_to_postfix_conversion.py

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* Update data_structures/stacks/infix_to_postfix_conversion.py

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2023-08-01 11:23:34 -07:00
roger-sato
0b0214c42f
Handle empty input case in Segment Tree build process (#8718) 2023-07-31 11:46:30 -07:00
AmirSoroush
384c407a26
Enhance the implementation of Queue using list (#8608)
* enhance the implementation of queue using list

* enhance readability of queue_on_list.py

* rename 'queue_on_list' to 'queue_by_list' to match the class name
2023-07-30 19:07:35 -07:00
AmirSoroush
d4f2873e39
add reverse_inorder traversal to binary_tree_traversals.py (#8726)
* add reverse_inorder traversal to binary_tree_traversals.py

* Apply suggestions from code review

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---------

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2023-07-30 17:54:15 -07:00
Sangmin Jeon
a03b739d23
Fix radix_tree.py insertion fail in ["*X", "*XX"] cases (#8870)
* Fix insertion fail in ["*X", "*XX"] cases

Consider a word, and a copy of that word, but with the last letter repeating twice. (e.g., ["ABC", "ABCC"])
When adding the second word's last letter, it only compares the previous word's prefix—the last letter of the word already in the Radix Tree: 'C'—and the letter to be added—the last letter of the word we're currently adding: 'C'. So it wrongly passes the "Case 1" check, marks the current node as a leaf node when it already was, then returns when there's still one more letter to add.
The issue arises because `prefix` includes the letter of the node itself. (e.g., `nodes: {'C' : RadixNode()}, is_leaf: True, prefix: 'C'`) It can be easily fixed by simply adding the `is_leaf` check, asking if there are more letters to be added.

- Test Case: `"A AA AAA AAAA"`
  - Fixed correct output:
  ```
  Words: ['A', 'AA', 'AAA', 'AAAA']
  Tree:
  - A   (leaf)
  -- A   (leaf)
  --- A   (leaf)
  ---- A   (leaf)
  ```
  - Current incorrect output:
  ```
  Words: ['A', 'AA', 'AAA', 'AAAA']
  Tree:
  - A   (leaf)
  -- AA   (leaf)
  --- A   (leaf)
  ```

*N.B.* This passed test cases for [Croatian Open Competition in Informatics 2012/2013 Contest #3 Task 5 HERKABE](https://hsin.hr/coci/archive/2012_2013/)

* Add a doctest for previous fix

* improve doctest readability
2023-07-24 11:29:05 +02:00
Caeden Perelli-Harris
93fb169627
[Upgrade Ruff] Fix all errors raised from ruff (#8879)
* chore: Fix tests

* chore: Fix failing ruff

* chore: Fix ruff errors

* chore: Fix ruff errors

* chore: Fix ruff errors

* chore: Fix ruff errors

* chore: Fix ruff errors

* chore: Fix ruff errors

* chore: Fix ruff errors

* chore: Fix ruff errors

* chore: Fix ruff errors

* chore: Fix ruff errors

* chore: Fix ruff errors

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* chore: Fix ruff errors

* chore: Fix ruff errors

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* Update cellular_automata/game_of_life.py

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* chore: Update ruff version in pre-commit

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* Update primelib.py

* Update min_cost_string_conversion.py

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2023-07-22 12:05:10 +02:00
pre-commit-ci[bot]
c9ee6ed188
[pre-commit.ci] pre-commit autoupdate (#8853)
* [pre-commit.ci] pre-commit autoupdate

updates:
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* Update double_ended_queue.py

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2023-07-04 00:20:35 +02:00
Himanshu Tomar
331585f3f8
Algorithm: Calculating Product Sum from a Special Array with Nested Structures (#8761)
* Added minimum waiting time problem solution using greedy algorithm

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* ruff --fix

* Add type hints

* Added two more doc test

* Removed unnecessary comments

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* Updated the code as per the code review

* Added recursive algo to calculate product sum from an array

* Added recursive algo to calculate product sum from an array

* Update doc string

* Added doctest for product_sum function

* Updated the code and added more doctests

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2023-06-23 10:26:05 +02:00
Linus M. Henkel
5b0890bd83
Dijkstra algorithm with binary grid (#8802)
* Create TestShiva

* Delete TestShiva

* Implementation of the Dijkstra-Algorithm in a binary grid

* Update double_ended_queue.py

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* Update least_common_multiple.py

* Update sol1.py

* Update pyproject.toml

* Update pyproject.toml

* https://github.com/astral-sh/ruff-pre-commit v0.0.274

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2023-06-22 13:49:09 +02:00
Frank-1998
b0f871032e
Fix removing the root node in binary_search_tree.py removes the whole tree (#8752)
* fix issue #8715

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2023-06-18 18:30:06 +02:00
Sundaram Kumar Jha
4a27b54430
Update permutations.py (#8102) 2023-05-31 12:56:59 +12:00
Christian Clauss
4b79d771cd
Add more ruff rules (#8767)
* Add more ruff rules

* Add more ruff rules

* pre-commit: Update ruff v0.0.269 -> v0.0.270

* Apply suggestions from code review

* Fix doctest

* Fix doctest (ignore whitespace)

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2023-05-26 09:34:17 +02:00
Christian Clauss
4c1f876567
Solving the Top k most frequent words problem using a max-heap (#8685)
* Solving the `Top k most frequent words` problem using a max-heap

* Mentioning Python standard library solution in `Top k most frequent words` docstring

* ruff --fix .

* updating DIRECTORY.md

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2023-04-27 23:02:07 +05:30
isidroas
14bdd174bb
Bloom Filter (#8615)
* Bloom filter with tests

* has functions constant

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* isort

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* from fail to erro

* captital leter

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* estimated error

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* again hash_

* Update data_structures/hashing/bloom_filter.py

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* from b to bloom

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* syntax error in dict comprehension

* from goodfather to godfather

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This reverts commit 35fa5f5c4b.

* pretty dict

* Apply suggestions from code review

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2023-04-08 19:39:24 +02:00
Christian Clauss
2f9b03393c
Delete queue_on_two_stacks.py which duplicates queue_by_two_stacks.py (#8624)
* Delete queue_on_two_stacks.py which duplicates queue_by_two_stacks.py

* updating DIRECTORY.md

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2023-04-08 17:46:19 +05:30
amirsoroush
5cb0a000c4
Queue implementation using two Stacks (#8617)
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* add 'iterable' to queue_on_two_stacks initializer

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2023-04-08 13:41:08 +02:00
amirsoroush
63710883c8
Remove extra len calls in doubly-linked-list's methods (#8600) 2023-04-01 17:53:21 +05:30
amirsoroush
e4d90e2d5b
change space complexity of linked list's __len__ from O(n) to O(1) (#8183) 2023-04-01 08:26:43 +02:00
pre-commit-ci[bot]
3f9150c1b2
[pre-commit.ci] pre-commit autoupdate (#8294)
* [pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/charliermarsh/ruff-pre-commit: v0.0.255 → v0.0.257](https://github.com/charliermarsh/ruff-pre-commit/compare/v0.0.255...v0.0.257)

* Fix PLR1711 Useless  statement at end of function

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2023-03-20 22:16:13 +01:00
Christian Clauss
521fbca61c
Replace flake8 with ruff (#8184) 2023-03-16 13:31:29 +01:00
Christian Clauss
c96241b5a5
Replace bandit, flake8, isort, and pyupgrade with ruff (#8178)
* Replace bandit, flake8, isort, and pyupgrade with ruff

* Comment on ruff rules

* updating DIRECTORY.md

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2023-03-15 13:58:25 +01:00
Andrey
b797e437ae
Add hashmap implementation (#7967) 2023-03-14 01:31:27 +01:00
Christian Clauss
64543faa98
Make some ruff fixes (#8154)
* Make some ruff fixes

* Undo manual fix

* Undo manual fix

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2023-03-01 17:23:33 +01:00
Christian Clauss
c909da9b08
pre-commit: Upgrade psf/black for stable style 2023 (#8110)
* pre-commit: Upgrade psf/black for stable style 2023

Updating https://github.com/psf/black ... updating 22.12.0 -> 23.1.0 for their `2023 stable style`.
* https://github.com/psf/black/blob/main/CHANGES.md#2310

> This is the first [psf/black] release of 2023, and following our stability policy, it comes with a number of improvements to our stable style…

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Christian Clauss
08c2245705
Upgrade to flake8 v6 (#8007)
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2022-11-29 16:56:41 +01:00
Mark Mayo
f32d611689
clean of unnecessary checks, imports, calls (#7993) 2022-11-21 00:00:27 +13:00
Dhruv Manilawala
8bfd1c844b
fix: mypy 0.991 issues (#7988)
* fix: mypy 0.991 issues

* fix: invalid condition for base case
2022-11-15 18:29:14 +01:00
Dhruv Manilawala
3bf86b91e7
fix: no implicit optional (#7984) 2022-11-15 14:55:14 +01:00
Alexander Pantyukhin
7b2eca0243
add distribute coins (#7975)
* add distribute coins

* updating DIRECTORY.md

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* fix review notes

* fix typehint

* fix type in TreeNode

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2022-11-10 15:49:38 +13:00
Caeden Perelli-Harris
daa1c7529a
Raise error not string (#7945)
* ci: Add `B023` to `.flake8` ignores

* refactor: Return `bool`/raise Exception

* [pre-commit.ci] auto fixes from pre-commit.com hooks

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* revert: Remove previous branch commit

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* feat: Apply `__repr__` changes

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* test: Fix doctests

* random.choice(population_score[:N_SELECTED])[0]

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Binary tree path sum (#7748)
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CenTdemeern1
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Caeden
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Caeden
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