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210 Commits

Author SHA1 Message Date
Manu M Bhat
cd10c944d1 Issue #1397 (#1403) 2019-10-19 20:14:37 +02:00
Jai Kumar Dewani
5ef5f67a51 Added more details about the problem statement (#1367) 
* Update DIRECTORY

* Updated DIRECTORY

* Fixed bug in directory build and re-build the directory.md

* fixed url issue

* fixed indentation in Directory.md

* Add problem-18 of project-euler

* Delete sol1.py

* Delete files

* Added more details to question

* Added doctest in printNGE()

* Made changes to fix Travis CI build

* Remove the trailing whitespace
 2019-10-18 21:14:01 +02:00
Hocnonsense
179284a41b Update treap.py (#1358) 
* Update treap.py

check merge()

* Update treap.py

random() is used. its difficult to write doctests
l->left
r->right
key->value
add __repr__ and __str__ in preorder
 2019-10-18 09:39:37 +02:00
Mariusz Skoneczko
7376addcd5 Implement Linked Queue and Linked Stack data structures (#1324) 
* Add LinkedQueue

* Add LinkedStack
 2019-10-18 08:38:31 +02:00
Nishant-Ingle
06d736199b Added comment (#1294) 2019-10-07 23:29:14 +05:00
William Zhang
9eac17a408 psf/black code formatting (#1277) 2019-10-05 10:14:13 +05:00
yijoonsu
189b350312 Deque (#1200) 
* deque add pop

* deque add remove
 2019-09-30 16:27:41 +02:00
Raj
6ac7b1387f Min head with decrease key functionality (#1202) 
* Min head with decrease key functionality

* doctest added

* __str__ changed as per Python convention

* edits in doctest

* get_value by key added

* __getitem__ added
 2019-09-26 00:03:31 +02:00
luoheng
01601e6382 Add disjoint set (#1194) 
* Add disjoint set

* disjoint set: add doctest, make code more Pythonic

* disjoint set: replace x.p with x.parent

* disjoint set: add test and refercence
 2019-09-23 05:08:20 +02:00
Denis Trofimov
04962c0d17 Fix lgtm error display #1024 (#1190) 
* fix: Syntax Error lgtm display in matrix/matrix_operation.py.

* Testing for None should use the 'is' operator.

* fix: Too many arguments for string format.

* fix: supress lgtm alert as false positive.

* style: Unnecessary 'pass' statement.

* Revert "fix: Syntax Error lgtm display in matrix/matrix_operation.py."

This reverts commit 4c629b4ce1.
 2019-09-21 16:23:34 +02:00
Sangeet K
768700b91f Add delete to trie.py + tests (#1177) 
* Add delete to trie.py + tests

* Minor fixes + tests

* Remove noqa comments + modify tests for Travis CI to detect

* Minor improvement
 2019-09-13 22:24:25 +02:00
KirilBangachev
f31a812c46 Add Binomial Heap (#1146) 
* Binomial Heap

Implementation of Binomial Heap. Reference: Advanced Data Structures, Peter Brass

* Update binomial_heap.py

* Update binomial_heap.py

* Update binomial_heap.py

- Fuller documentation of binomial heap
- Update unit tests
- Replace printing method by overwriting __str__()

* Update binomial_heap.py

- Added more tests
- Added to the documentation
- Stylistic editing
- mergeHeaps now also returns a reference to the merged heap
- added a preOrder function that returns a list with the preorder of the heap

* Update binomial_heap.py

Changed the unit tests structure

* Turned the tests into doctests
 2019-09-05 07:58:37 +02:00
Christian Clauss
47a9ea2b0b
Simplify code by dropping support for legacy Python (#1143) 
* Simplify code by dropping support for legacy Python

* sort() --> sorted()
 2019-08-19 15:37:49 +02:00
Christian Clauss
89acf5d017 print() is a function just like every other function (#1101) 
* print() is a function just like every other function
 2019-08-06 12:14:23 +02:00
Christian Clauss
7b267e5e4f Fix data_structures to pass our Travis CI pytests (#1088) 
* Fix data_structures to pass pytests

* Restore data_structures/stacks/__init__.py
 2019-07-31 23:14:35 +08:00
QuantumNovice
c27bd5144f in_static_equilibrium checks if a 2D static system is in equilibrium (#1062) 
* Add files via upload

* Add files via upload

* Create .a

* Add files via upload

* Add files via upload

* Rename static_solver.py to in_static_equilibrium.py

* Delete .a

* Update in_static_equilibrium.py

* Add files via upload

* Add files via upload

* Update in_static_equilibrium.py

* Add files via upload

* Add files via upload

* Add files via upload

* Add files via upload

* pyTests added

* Add files via upload

* Delete red_black_tree.py

* Add files via upload
 2019-07-25 20:38:24 +02:00
Bruno Simas Hadlich
267b5eff40 Added doctest and more explanation about Dijkstra execution. (#1014) 
* Added doctest and more explanation about Dijkstra execution.

* tests were not passing with python2 due to missing __init__.py file at number_theory folder

* Removed the dot at the beginning of the imported modules names because 'python3 -m doctest -v data_structures/hashing/*.py' and 'python3 -m doctest -v data_structures/stacks/*.py' were failing not finding hash_table.py and stack.py modules.

* Moved global code to main scope and added doctest for project euler problems 1 to 14.

* Added test case for negative input.

* Changed N variable to do not use end of line scape because in case there is a space after it the script will break making it much more error prone.

* Added problems description and doctests to the ones that were missing. Limited line length to 79 and executed python black over all scripts.

* Changed the way files are loaded to support pytest call.

* Added __init__.py to problems to make them modules and allow pytest execution.

* Added project_euler folder to test units execution

* Changed 'os.path.split(os.path.realpath(__file__))' to 'os.path.dirname()'
 2019-07-17 01:09:53 +02:00
Alfonso Rodríguez Pereira
5f991f7740 #315 Renamed all files to snake_case (#993) 2019-07-11 11:16:42 +02:00
Anup Kumar Panwar
4e413c0183 Updated README 2019-07-06 11:11:20 +05:30
Jarred Allen
506bb5ccfe Add Red-Black Binary Search Trees (#954) 
* Wrote most of an rbt, missing just removal

* Added some convenience methods.

* Added a color method

* Wrote code to delete, but has issues :(

* Fixed a bug in Red-Black trees

* Fixed bug in tree color validation and delete repairing

* Clean up == comparison to None
 2019-07-05 14:13:16 +05:30
Hector S
05e5172093 .vs/ directory, matrix_multiplication_addition file and binary tree directory (#894) 
* Added print function into matrix_multiplication_addition.py and removed blank space in data_structures/binary tree directory

* Removed .vs/ folder per #893

* Rename matrix_multiplication_addition.py to matrix_operation.py
 2019-06-11 19:24:53 +08:00
luanjerry
f386fce820 Update queue_on_list.py (#851) 
* Fixed error in queue_on_list.py
 2019-05-31 16:05:24 +08:00
Anup Kumar Panwar
71be23999c refactor 2019-05-26 21:56:10 +05:30
Artyom Belousov
94380a17a8 Added treap (#797) 
* Added treap

* Added comments to treap
 2019-05-26 06:20:37 +08:00
John Law
48bba495ae
Rename is_Palindrome to is_Palindrome.py (#752) 2019-04-20 15:13:02 +08:00
Reshad Hasan
52d2fbf3cf Add lowest common ancestor to data structures (#732) 
* add longest common ancestor in data structures

* add lowest common ancestor to data structures
 2019-04-10 23:59:49 +08:00
rohan11074
137871bfef feature to add input (#749) 2019-04-07 23:55:32 +08:00
Ishani
15bc87fb41 Create is_Palindrome (#740) 2019-04-04 16:40:11 +05:30
Maxim Semenyuk
8e67ac3b76 Fix '__bool__' method (#735) 
The method returns the truth when the stack is empty
 2019-03-10 07:40:29 +05:30
Akash Ali
6f6510623c Update heap.py (#726) 
Added comments for the better understanding of heap.
 2019-03-04 16:49:36 +08:00
Ashwek Swamy
88b6caa30a fixed balanced_parentheses, Added infix-prefix & postfix evaluation (#621) 
* Create infix_to_prefix_conversion.py

* Create postfix_evaluation.py

* Update balanced_parentheses.py
 2019-03-02 00:53:29 +08:00
Reshad Hasan
9a44eb4479 Organize graph algorithms (#719) 
* organized graph algorithms

* all graph algorithms in Graphs/ folder

* all graph algorithms are in one folder

* Rename number theory/factorial_python.py to maths/factorial_python.py
 2019-02-25 17:35:24 +08:00
Mickaël Schoentgen
3dc50529ca Fix DeprecationWarning: invalid escape sequence (#679) 
Signed-off-by: Mickaël Schoentgen <contact@tiger-222.fr>
 2019-01-08 16:58:47 +08:00
Jithendra Yenugula
d26311424d Adding a program for swap nodes in linkedlist (#667) 
* Adding a program for swap nodes in linkedlist

* Updating swapNodes
 2018-12-25 21:09:36 +08:00
Mikael Souza
2e2fadf4db Fixed bug where an empty stack would cause error 2018-12-17 10:45:54 -04:00
Mikael Souza
a8cfc14737 Added more parentheses examples 2018-12-17 10:45:16 -04:00
Mikael Souza
2d082cf19c Changed import from .Stack to stack 2018-12-17 10:44:38 -04:00
Harshil
72c217c37e
Update AVLtree.py 
Removed blank lines (256 to 287)!
 2018-11-23 18:23:06 +01:00
Awfifcuihc
9bbc4d9021 Update AVLtree.py 
add comments
 2018-11-22 14:33:50 +08:00
Awfifcuihc
d1dba51326
remove commented lines 2018-11-21 12:46:32 +08:00
Awfifcuihc
9f96c155be Update AVLtree.py 
add delete function
add demo with shuffled list
add print lines to trace the addition or deletion
 2018-11-21 03:25:07 +08:00
Awfifcuihc
6001215b60 Update AVLtree.py 
An auto balanced binary tree
with no delete node function
leave for latter
 2018-11-20 03:41:52 +08:00
Awfifcuihc
16cc96a092 Create AVLtree.py 2018-11-20 03:34:44 +08:00
Yasser A
840aa6209b fix division by float issue in range heap.py 2018-11-06 17:19:51 -05:00
Rafael García Cuéllar
beafe3656f Re-design psnr.py code and change image names (#592) 
* Change some Image File names & re-code the psnr algorithm (conserving both methods). Also Added new example.

* Selected psnr method and reformat some code from arithmetic_analysis
 2018-11-05 18:19:08 +01:00
Harshil
5db9d2e54a Merge branch 'master' of git://github.com/gerroo/Python into gerroo-master 2018-11-04 16:04:29 +01:00
gerroo
a834326e0e Added b16, b32, a85, abs, absMax, absMin 2018-11-03 12:08:13 -08:00
Harshil
608a462965 Merge branch 'fix-singly_linked_list' of git://github.com/ashwek/Python-1 into ashwek-fix-singly_linked_list 2018-11-01 18:29:58 +01:00
Ashwek Swamy
f89d3a9ec3
Update singly_linked_list.py 2018-11-01 21:25:45 +05:30
Ashwek Swamy
48aa4c4a01
Update singly_linked_list.py 2018-11-01 21:04:05 +05:30
Aditya Sharma
1b19028117 Update doubly_linked_list.py (#545) 2018-10-31 08:34:55 +01:00
Hrushikesh Hanbar
f1ec84af84 Update balanced_parentheses.py (#538) 2018-10-30 15:29:12 +01:00
Harshil
a84f7c073f Rename segment_tree to segment_tree.py 2018-10-27 13:38:23 +02:00
Harshil
e1d1f8513d
Delete binary_seach_tree.py 
I forgot that we already have an implementation of Binary Search! So deleting this one!
 2018-10-27 13:36:30 +02:00
Harshil
c787c13a71 Resolve conflicts 2018-10-27 13:29:53 +02:00
Alex Brown
ea2ddaaf6a all valid python 3 2018-10-20 14:45:08 -05:00
Alex Brown
91fccecb56 snake_case all the things 2018-10-19 17:14:25 -05:00
Alex Brown
564179a0ec increment 1 2018-10-19 07:48:28 -05:00
Alex Brown
718b99ae39 increment 1 2018-10-19 07:48:01 -05:00
Parth Shandilya
5d1f72604d
Improved Code and removed Warnings (#483) 2018-10-19 14:00:31 +05:30
Parth Shandilya
07451a6ca4
Improved Code and removed warnings (#482) 
Improved Code and removed warnings
 2018-10-19 13:28:21 +05:30
ParthS007
0856a61859 Remove Multiple Unused Imports and Variable 2018-10-18 02:58:57 +05:30
Harshil
63c7e8ede1
Minor update 
Changed two characters which were the root cause of 'SyntaxError: Non-ASCII character '\xe2' in file main.py, but no encoding declared'
 2018-10-04 11:34:50 +02:00
S-Sanyal
054b4b31f4 Made compatible for all versions of python 2018-10-03 21:52:30 +05:30
S-Sanyal
c74b2732d9 Updated 2018-10-03 21:37:46 +05:30
S-Sanyal
dc584f1658 Made the code Python 3 compatible 2018-10-03 20:13:34 +05:30
S-Sanyal
ccb25641ba Added Stock-Span-Problem 2018-10-02 14:57:37 +05:30
Anshul Malik
0d19edbcb3 refactor-segment-tree 2018-06-05 21:39:16 +05:30
Harshil
fc3bdb6e12
Merge pull request #274 from gabrielangelo/master 
hash functions added
 2018-03-21 09:09:32 +05:30
gabriel
1fa23f57d7 hash functions added 2018-03-20 20:48:58 -03:00
William Feng
c975cac371
function '__init__' miss a 'i' 
__int__ should be __init__ i think?
 2018-03-07 15:04:37 +08:00
Harshil
bae5762b09
Rename Arrays to Arrays.py 2018-03-02 11:16:49 +05:30
Harshil
7a428c1cdd
Update Arrays 2018-03-02 11:16:05 +05:30
Akshay Kumar
59c797eace
Update Arrays 2018-03-01 18:58:00 +05:30
Akshay Kumar
ce3036144b
Update Arrays 
Array implementation
 2018-02-15 21:56:51 +05:30
Harshil
00c13c29b9
Merge pull request #243 from cclauss/patch-1 
Fix unresolved name: insert_tail()
 2018-01-22 07:12:36 +05:30
cclauss
a88ad60365
Update singly_LinkedList.py 2018-01-21 08:59:55 +01:00
cclauss
d043448fd9
Fix unresolved name: insert_tail() 
insert_tail(Head.next, data) --> Head.next.insert_tail(data)

Fixes: $ __flake8 . --count --select=E901,E999,F821,F822,F823 --show-source --statistics__
```
./data_structures/LinkedList/singly_LinkedList.py:14:13: F821 undefined name 'insert_tail'
            insert_tail(Head.next, data)
            ^
1     F821 undefined name 'insert_tail'
```

Also formats the code to be compliant with [PEP8](http://pep8.org).
 2018-01-21 08:56:16 +01:00
cclauss
4ee0e620cb Modernize Python 2 code to get ready for Python 3 AGAIN 2018-01-21 08:25:19 +01:00
cclauss
3f6760ee15
noqa: F821 This syntax is Python 3 only 2018-01-20 12:35:12 +01:00
cclauss
b3873be7b5
noqa to silence flake8 on Python 3 only syntax 2018-01-20 12:31:12 +01:00
ashu01
06c7827a94 1. typo fix {Arrays| 2017-12-31 14:33:14 +05:30
ashu01
4fb978cf58 1. typo fix {playfair_cipher.py, AVL.py} 
2. Corrected Logic {AVL.py, 104-107}
3. Removed unnecessary semicolons {BellmanFord.py, Dijkstra.py}
 2017-12-31 14:30:31 +05:30
cclauss
e31c780d94 Modernize Python 2 code to get ready for Python 3 2017-11-25 12:41:55 +01:00
cclauss
4e06949072 Modernize Python 2 code to get ready for Python 3 2017-11-25 10:23:50 +01:00
Harshil
a03b2eafc0
Merge pull request #204 from erdenezul/even_tree_problem 
add even tree problem
 2017-11-15 19:10:05 +05:30
Harshil
4306482996
Merge pull request #161 from arpanjain97/master 
Add shortest path algorithms
 2017-11-03 16:05:02 +05:30
Erdenezul
e0733c26f2 add even tree problem 2017-11-03 15:02:10 +08:00
Pablo
9d8824658a Finished delete function and added some prints functions too 2017-10-28 18:33:14 -03:00
Pablo
f766bb4216 Added delete function 2017-10-28 16:18:21 -03:00
Pablo
54700f2c8f Added delete function 2017-10-28 16:17:55 -03:00
Harshil
07e8e25672 Merge pull request #190 from jyotsana19/master 
Added Dequeue in Python
 2017-10-26 11:31:09 +05:30
Harshil
8f3abf5ce6 Merge pull request #186 from gilbertoalexsantos/union-find 
Created Union-Find algorithm
 2017-10-26 11:30:58 +05:30
Harshil
55ebf703f8 Merge pull request #184 from pablo9891/master 
Rename binary_search_tree and added a getNode function
 2017-10-26 11:30:31 +05:30
Harshil
6bdf4fc2d1 Merge pull request #182 from tonydelanuez/patch-1 
Adding reverse() to singly-linked list
 2017-10-25 14:12:58 +05:30
97arushisharma
9bc80eac2d Added Dequeue in Python 2017-10-25 01:37:11 +05:30
Harshil
f07c8d517e Merge pull request #178 from SaBuZa/Lazy-Segment-Tree 
Lazy Segment Tree
 2017-10-24 11:27:40 +05:30
Harshil
f6696d0e65 Merge pull request #177 from SaBuZa/Segment-Tree 
Add Segment tree
 2017-10-24 11:27:32 +05:30
Harshil
3b69bfcb33 Merge pull request #176 from imcgeek/patch-1 
Create Arrays
 2017-10-24 11:27:17 +05:30
Gilberto Alexandre dos Santos
7180f08204 Created Union-Find algorithm 2017-10-23 22:41:46 -03:00