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Author SHA1 Message Date
Akash
f80ffe1f54 added method for checking armstrong number (#1936) 
* added method for checking armstrong number

* Update comment

Co-authored-by: Christian Clauss <cclauss@me.com>
 2020-05-03 19:56:33 +02:00
Akash
b6fcee3114 Check if a item exist in stack or not (#1931) 
* Check if a item exist in stack or not

* implemented __contains__ method in stack

* made changes in __contains__
 2020-05-03 16:15:31 +02:00
lanzhiwang
853741e518 enhanced segment tree implementation and more pythonic (#1715) 
* enhanced segment tree implementation and more pythonic

enhanced segment tree implementation and more pythonic

* add doctests for segment tree

* add type annotations

* unified processing sum min max segment tre

* delete source encoding in segment tree

* use a generator function instead of returning

* add doctests for methods

* add doctests for methods

* add doctests

* fix doctest

* fix doctest

* fix doctest

* fix function parameter and fix determine conditions
 2020-05-02 21:44:29 +02:00
QuantumNovice
9bb57fbbfe support_vector_machines.py increase error tolerance to suppress convergence warnings (#1929) 
* Update support_vector_machines.py

* Update support_vector_machines.py

Co-authored-by: Christian Clauss <cclauss@me.com>
 2020-05-02 21:19:45 +02:00
Saba Pochkhua
a859934105 Hamiltonian Cycle (#1930) 
* add skeleton code

* add doctests

* add tests for util function + implement wrapper

* full implementation

* add ability to add starting verex for algorithm

* add static type checking

* add doc tests to validation method

* bug fix: doctests expected failing

* Update hamiltonian_cycle.py

* Update hamiltonian_cycle.py

Co-authored-by: Christian Clauss <cclauss@me.com>
 2020-05-02 21:13:56 +02:00
lkdmttg7
d62cc35268 Update stale comment (#1924) 
* Update close comment

* Update stale.yml

* Multiline strings in yaml files

https://yaml-multiline.info/

Co-authored-by: John Law <johnlaw.po@gmail.com>
Co-authored-by: Christian Clauss <cclauss@me.com>
 2020-05-02 13:04:25 +02:00
Christian Clauss
6acd7fb5ce Wrap lines that go beyond GitHub Editor (#1925) 
* Wrap lines that go beyond GiHub Editor

* flake8 --count --select=E501 --max-line-length=127

* updating DIRECTORY.md

* Update strassen_matrix_multiplication.py

* fixup! Format Python code with psf/black push

* Update decision_tree.py

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
 2020-05-01 23:36:35 +02:00
QuantumNovice
bcaa88b26c Changed the deprecated np.matrix to np.ndarray (#1923) 2020-05-01 17:42:41 +02:00
Sanders Lin
308505f18f Add shortest path by BFS (#1870) 
* Create breadth_first_search_shortest_path.py

* updating DIRECTORY.md

* Reduce side effect of `shortest_path`

For the sake of future testing and documentation -

* fixup! Format Python code with psf/black push

* Fix typo `separately`

* Change to get() from dictionary

Co-Authored-By: Christian Clauss <cclauss@me.com>

* Move graph to the top

* fixup! Format Python code with psf/black push

* Add doctest for shortest path

* Add doctest for BFS

* fixup! Format Python code with psf/black push

* Add typings for breadth_first_search_shortest_path

* fixup! Format Python code with psf/black push

* Remove assert from doctests

* Add blank line to doctest

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Co-authored-by: John Law <johnlaw.po@gmail.com>
Co-authored-by: Christian Clauss <cclauss@me.com>
Co-authored-by: John Law <johnlaw@linux.com>
 2020-05-01 07:24:32 +02:00
Saba Pochkhua
b01e5b78a3 Graph coloring (#1921) 
* add skeleton code

* add doctests

* add mainc function pseudo code and tests (ToDo: write Implementation)

* typo fixes

* implement algorithm

* add type checking

* add wikipedia link

* typo fix

* update range syntax

Co-authored-by: Christian Clauss <cclauss@me.com>

* change indexed iteration checking to any()

Co-authored-by: Christian Clauss <cclauss@me.com>

* fix: swap import and documentation sections

* fix: change return none to return empty list

* remove unnecessary import (Union)

* change: remove returning boolean indicating problem was solved or not

* remove unnecessary import (Tuple)

Co-authored-by: Christian Clauss <cclauss@me.com>
 2020-04-30 23:23:52 +02:00
Christian Clauss
1ad78b2663 Fix invalid escape sequence in binary_search_tree.py (#1920) 
* Fix invalid escape sequence in binary_search_tree.py

data_structures/binary_tree/binary_search_tree.py:156
  /home/travis/build/TheAlgorithms/Python/data_structures/binary_tree/binary_search_tree.py:156: DeprecationWarning: invalid escape sequence \

* fixup! Format Python code with psf/black push

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
 2020-05-01 02:17:11 +05:30
mateuszz0000
3d0680eddf Added Burkes dithering algorithm. (#1916) 
* Added Burkes dithering algorithm

* Added unit tests for burkes algorithm

* Fix burkes algorithm

* Added some additional information

* Fixed CI tests

* Update digital_image_processing/dithering/burkes.py

Co-Authored-By: Christian Clauss <cclauss@me.com>

* Update digital_image_processing/dithering/burkes.py

Co-Authored-By: Christian Clauss <cclauss@me.com>

* Update digital_image_processing/dithering/burkes.py

Co-Authored-By: Christian Clauss <cclauss@me.com>

* Propogate the += and add a doctest

* Fix doctest

* @staticmethod --> @ classmethod to ease testing

* def test_burkes(file_path):

* Fix for mypy checks

* Fix variable order in get_greyscale

* Fix get_greyscale method

* Fix get_greyscale method

* 3.753

Co-authored-by: Christian Clauss <cclauss@me.com>
 2020-04-30 11:54:20 +02:00
LethargicLeprechaun
fbc038d532 Added A1Z26 Cipher (#1914) 
* A1Z26 Cipher

* A1Z26 Cipher

* Added type hints

* Added Doctests

* removed tabs, spaces instead

* corrected doctest

* corrected doctest

* info URLs added

* Condensed decode to one line

* Condensed encode function to a single line

* Nice one!

Co-authored-by: Christian Clauss <cclauss@me.com>
 2020-04-30 00:23:51 +02:00
Christian Clauss
8cb957f893 Blacken one_dimensional.py (#1911) 
* Blacken one_dimensional.py

* updating DIRECTORY.md

* Travis CI: Upgrade to Ubuntu 20.04 LTS Focal

Ubuntu 20.04 LTS (Focal Fossa) https://releases.ubuntu.com/focal

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
 2020-04-27 18:40:46 +02:00
8Dion8
0ef9dd3977 Create one_dimensional.py (#1905) 
* Create one_dimensional.py

* Update cellular_automata/one_dimensional.py

Co-Authored-By: Christian Clauss <cclauss@me.com>

* Update cellular_automata/one_dimensional.py

Co-Authored-By: Christian Clauss <cclauss@me.com>

* Update one_dimensional.py

Moved import to the top so that the type Image gets recognized

* Update one_dimensional.py

* Update cellular_automata/one_dimensional.py

* Update cellular_automata/one_dimensional.py

* Update one_dimensional.py

* Update one_dimensional.py

* Update one_dimensional.py

Co-authored-by: Christian Clauss <cclauss@me.com>
 2020-04-27 18:07:31 +02:00
mateuszz0000
5933cd4d83 Added sepia tone (#1877) 
* Add sepia tone

* Add unit test

* technic --> technique

* Update digital_image_processing/sepia.py

Co-Authored-By: Christian Clauss <cclauss@me.com>

* Update digital_image_processing/sepia.py

Co-Authored-By: Christian Clauss <cclauss@me.com>

* Fixed errors after commit changes

* Fixed errors

Co-authored-by: Christian Clauss <cclauss@me.com>
 2020-04-26 11:59:11 +02:00
Sanders Lin
e5dd2b1eb7 Fix typo in Project Euler sol1.py (#1875) 2020-04-25 23:27:01 +02:00
Prince Gangurde
58271c5851 Update linear_search.py (#1906) 2020-04-24 12:34:18 +02:00
Christian Clauss
b560b76002 Add cellular_automata directory (#1902) 
Related to https://github.com/TheAlgorithms/Python/issues/1613#issuecomment-618175224 @8Dion8 Your review please.  Once this land, this directory would be a great place for you to add your work.
 2020-04-23 11:57:32 +02:00
Arkadip Bhattacharya
098be3594b fix: space count in strings/word_occurrence.py (#1896) 
* fix: space count in strings/word_occurrence.py

* Update strings/word_occurrence.py

Co-Authored-By: Christian Clauss <cclauss@me.com>

* Update strings/word_occurrence.py

Co-Authored-By: Christian Clauss <cclauss@me.com>

* Update strings/word_occurrence.py

Co-Authored-By: Christian Clauss <cclauss@me.com>

* Update word_occurrence.py

Seems like, there is no need o `occurrence.pop('', None)`

Co-authored-by: Christian Clauss <cclauss@me.com>
 2020-04-21 17:28:54 +02:00
Christian Clauss
24b2aecef3 Create Python/bit_manipulation/README.md (#1897) 
* Create Python/bit_manipulation/README.md

To open up a new area of algorithms...

@Shrutikabansal I hope that you will contribute some of your work here.

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
 2020-04-20 20:19:27 +02:00
Muhammad Umer Farooq
4b78c6952d Create is_palindrome.py (#1754) 
* Create is_palindrome.py

* Update is_palindrome.py

* Update is_palindrome.py

Co-authored-by: Christian Clauss <cclauss@me.com>
 2020-04-19 22:05:36 +05:30
Sanders Lin
c92a520956 Update breadth_first_search.py (#1869) 2020-04-19 19:26:52 +05:30
Sanders Lin
7aaf79cc23 Initialize set with source in DFS (#1872) 
* Update dfs.py

* Add type hints, rearrange doc-strings and comments

* fixup! Format Python code with psf/black push

* dfs -> depth_first_search

Co-Authored-By: Christian Clauss <cclauss@me.com>

* dfs -> depth_first_search

* Add doctest for DFS

* fixup! Format Python code with psf/black push

* Rename dfs.py to depth_first_search_dictionary.py

* updating DIRECTORY.md

* Rename depth_first_search_dictionary.py to depth_first_search_dfs.py

* updating DIRECTORY.md

* Rename depth_first_search.py to depth_first_search_2.py

* updating DIRECTORY.md

* Rename depth_first_search_dfs.py to depth_first_search.py

* updating DIRECTORY.md

Co-authored-by: John Law <johnlaw.po@gmail.com>
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Co-authored-by: Christian Clauss <cclauss@me.com>
 2020-04-17 20:05:29 +02:00
Sanders Lin
1c9d4a3929 Update abbreviation.py (#1887) 2020-04-17 20:04:30 +02:00
Sanders Lin
0feed0bfb8 Update CONTRIBUTING.md (#1886) 2020-04-17 20:03:36 +02:00
Prince Gangurde
8c01da20d6 Update random_forest_regressor.py (#1880) 2020-04-17 12:43:50 +02:00
Christian Clauss
d48661e35d CONTRIBUTING.md: What is an Algorithm? (#1885) 
* CONTRIBUTING.md: What is an Algorithm?

We are seeing too many _how-to examples_ for using existing Python packages so we should define what we want algorithm contributions to be.

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
 2020-04-17 12:42:00 +02:00
Prince Gangurde
b64c4af296 Create gaussian_naive_bayes.py (#1861) 
* Create Gaussian_Naive_Bayes.py

Added Gaussian Naive Bayes algorithm in the module machine learning

* Rename Gaussian_Naive_Bayes.py to gaussian_naive_bayes.py

* requirements.txt: pip install xgboost

Co-authored-by: Christian Clauss <cclauss@me.com>
 2020-04-17 09:38:44 +08:00
Sanders Lin
d2e8e6215e Update g_topological_sort.py (#1873) 2020-04-16 12:34:14 +02:00
Christian Clauss
f6ee518ee1 Rename math/add.py to maths/add.py (#1857) 
* Rename math/add.py to maths/add.py

* fixup! Format Python code with psf/black push

* Fix sum to add

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Co-authored-by: John Law <johnlaw.po@gmail.com>
 2020-04-13 07:50:46 +02:00
markaster
2fc3f2e4a0 Update year in LICENSE.md (#1848) 2020-04-13 02:17:29 +02:00
Prince Gangurde
7ffdef2636 Fix some typos in random forest classifier (#1858) 2020-04-13 02:15:48 +02:00
Christian Clauss
7ebe2b9593 Test the exception conditions (#1853) 
* Text exception conditions

These are ValueErrors, not AttributeErrors.

* fixup! Format Python code with psf/black push

* Update perceptron.py

* Update perceptron.py

* Update perceptron.py

* Revert the test

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
 2020-04-13 02:10:21 +02:00
Shrutika Bansal
3735e74296 added add algorithm (#1856) 
* added add algorithm

* Update and rename check/add.py to math/add.py

Co-authored-by: Christian Clauss <cclauss@me.com>
 2020-04-12 19:53:28 +02:00
Christian Clauss
8bf380ce7d README.md: sumab() --> sum_ab() for consistancy (#1855) 
* README.md: sumab() --> sum_ab() for consistancy  

consistency

* fixup! Format Python code with psf/black push

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
 2020-04-12 17:18:30 +02:00
Sajied Shah Yousuf
c775baf55f Added new Algorithm to find middle element of Linked List (#1822) 
* Added new Algorithm to find middle element of Linked List

* Rename MiddleElementOfLinkedList.py to middle_element_of_linked_list.py

* changed "middle_element_of_linked_list.py" algorithm for taking input

* Update middle_element_of_linked_list.py

* Update middle_element_of_linked_list.py

* Update middle_element_of_linked_list.py

* Update middle_element_of_linked_list.py

* Update middle_element_of_linked_list.py

* Update middle_element_of_linked_list.py

* Update middle_element_of_linked_list.py

* Update middle_element_of_linked_list.py

* Update middle_element_of_linked_list.py

* Whack the trailing whitespace

Co-authored-by: Christian Clauss <cclauss@me.com>
 2020-04-12 16:45:07 +02:00
Anup Kumar Panwar
728deeae82 Update FUNDING.yml 2020-04-10 14:58:03 +05:30
Christian Clauss
4103c9fde4 Update FUNDING.yml (#1829) 
* Update FUNDING.yml

* fixup! Format Python code with psf/black push

* Update FUNDING.yml

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Co-authored-by: Anup Kumar Panwar <1anuppanwar@gmail.com>
 2020-04-10 14:55:58 +05:30
Christian Clauss
8f2c9932e0 CONTRIBUTING.md: Fix comments about the black formatter (#1841) 
* CONTRIBUTING.md: Fix comments about the black formatter

Fixes #1840

* Update CONTRIBUTING.md

* Update CONTRIBUTING.md
 2020-04-08 12:27:11 +02:00
hackercyclops12
1b65309dca Update README.md (#1842) 2020-04-07 23:56:21 +02:00
Joan Martin Miralles
a38e143cf8 Binary search tree using recursion (#1839) 
* Binary search tree using recursion

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
 2020-04-07 18:09:05 +02:00
Joaquin Cabezas
c1a57e0353 Fix typo "panagram" -> "pangram" (#1836) 2020-04-07 14:08:11 +02:00
Brian Larsen
e5f7fbcc9e Change gitpod configuration for python3. (#1827) 2020-04-07 12:20:08 +02:00
Christian Clauss
3d129a4964 Create Python/quantum/README.md (#1834) 
* Create Python/quantum/README.md

Started at #1831

* fixup! Format Python code with psf/black push

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
 2020-04-07 11:58:23 +02:00
Prince Gangurde
f35484baf6 Update greedy.py (#1832) 2020-04-07 01:00:10 +02:00
Prince Gangurde
6043a44ffb Update basic_binary_tree.py (#1833) 
fixed some grammar mistakes
 2020-04-07 00:59:32 +02:00
farnswj1
20c2db0de4 Update reverse_words.py (#1825) 
The following update results in less lines of code and faster performance while preserving functionality.
 2020-04-04 07:01:37 +02:00
Nolan Emirot
9b376a5bfb Typo in comment rabin_karp.py (#1820) 
* Update rabin_karp.py

fix: typo

* Update rabin_karp.py

Co-authored-by: Christian Clauss <cclauss@me.com>
 2020-03-29 10:19:19 +02:00
Christian Clauss
f17e9822b0 psf/black changes to next_greater_element.py (#1817) 
* psf/black changes to next_greater_element.py

* fixup! Format Python code with psf/black push

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
 2020-03-28 07:24:59 +01:00