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* added radix tree to data structures
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* feat: Implement binary tree path sum (#7135)
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* feat: Binary tree node sum (#7020)
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* Binary Search Tree Inorder Traversal
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* Add typing
hacktoberfest
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* Enhance fenwick_tree.py
* Change update to add in fenwick_tree.py
* Some changes
* Fix bug
* Add O(N) initializer to FenwickTree
* Add get method to Fenwick Tree
* Change tree in Fenwick Tree
* Add rank query to FenwickTree
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* change `List` to `list`
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* renames prime functions and occurances in comments
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* MAINT: Used f-string method
Updated the code with f-string methods wherever required for a better and cleaner understanding of the code.
* Updated files with f-string method
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I don't think this change is efficient but it might tackle the error as the error was due to using long character lines.
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* Fix type annotations for linked_stack.py
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* [mypy] Fix type annotations for binary tree traversals in data structures
* Change variable name and update level_order_1 to use a deque
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* remove duplicate function
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* Remove prints inside functions and return lists
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* Updated Pop function
Added underflow condition
* Update Pop Function
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* Update stack.py
* if not self.stack: raise StackUnderflowError
* Add doctests
* StackUnderflowError
* ..., not ....
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* fix: fix mypy errors
Update binary_search_tree `arr` argument to be typed as a list
within `find_kth_smallest` function
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be None which means that a None type value can be returned from
this function
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This is a followup to https://github.com/TheAlgorithms/Python/pull/4973#issuecomment-933117382
As per given suggestion, I've added type hints to certain methods that don't have them. I have also added documentation and example doctests as a usage example for (most of) those that don't have them.
I have also added another test case following the previous test case's format. I noticed that the existing test case from previous pull request might be redundant with the ones I've made, so I decided to create a specific situation where the linked list would have to keep different kinds of data types for each node, in `test_singly_linked_list_2` test function.
Some minor changes in strings has been done to keep things consistent with other parts of the document. If it is undesirable, please let me know.
* Added the matrix_exponentiation.py file in maths directory
* Implemented the requested changes
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* add new line at end of file
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* fix isort issue
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* fix variable names in wavelet_tree and correct typo
* Add type hints and variable renaming
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* Move doctest to individual functions and reformat code
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* Update wavelet_tree.py
* types-requests
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* # type: ignore
* # type: ignore
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* ,
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* reformat code
add more test
* add test to iter
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* Create evaluate_postfix_notations.py
Adding in the evaluate postfix notation using Stacks
one of the common use with simple stack question
creating a new file for the data structure of stacks
* Create evaluate_postfix_notations.py
Adding in the evaluate postfix notation using Stacks
one of the common use with simple stack question
creating a new file for the data structure of stacks
* Delete evaluate_postfix_notations.py
* Evaluate postfix expression stack clean approach
Sending in the PR again as the Previous request failed in pre commit
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* Update evaluate_postfix_notations.py
Made changes as per the required for fixing the failing pre-commits.
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Made changes as suggested by @cclauss
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fixed pre-commit fails
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fixing pre-commit fails
* Update evaluate_postfix_notations.py
Deleted trailing white spaces causing pre-commits to fail
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* chore: update print_reverse helper method
Use a generator expression instead of slicing
`elements_list` to improve the space and time complexity
of `make_linked_list` to O(1) space and O(n) time
by avoiding the creation a shallow copy of `elements_list`.
* fix: add type checking and argument typing
Add argument typing to all methods in `print_reverse`
Add doctest to helper function `make_linked_list` and
basic edge case tests to `print_reverse`
* test: add `print_reverse` test
Fix doctest syntax and remove edge case tests that are covered
by typed arguments.
Add `print_reverse` test that expects the correct values are printed
out by adding a `test_print_reverse_output` helper function.
* format code
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* added an algorithm which checks a linked list for loops and returns true if one is found
* added doctests and clarified meaning of loop
* Define Node.__iter__()
* Update and rename has_loop.py to has_duplicate_data.py
* Update has_duplicate_data.py
* Update has_duplicate_data.py
* Update and rename has_duplicate_data.py to has_loop.py
* Update has_loop.py
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* Create alternate_disjoint_set.py
This code implements a disjoint set using Lists
with added heuristics for efficiency
Union by Rank Heuristic and Path Compression
* Update alternate_disjoint_set.py
Added typehints, doctests and some suggested variable name change
* Update alternate_disjoint_set.py
* Formatted with Black
* More formatting
* Formatting on line 28
* Error in Doctest
* Doctest Update in alternate disjoint set
* Fixed build error
* Fixed doctest
* fixes: #2172
* fixes: #2172
* Added docstrings and type of parameters
* fixed error
* Added type hints
* made changes
* removed capital letters from function name
* Added type hints
* fixed bulid error
* modified comments
* fixed build error
* adding static type checking to basic_binary_tree.py
* Add static type checking to functions with None return type
* Applying code review comments
* Added missing import statement
* fix spaciing
* "cleaned up depth_of_tree"
* Add doctests and then streamline display() and is_full_binary_tree()
* added static typing to lazy_segment_tree.py
* added missing import statement
* modified variable names for left and right elements
* added static typing to lowest_common_ancestor.py
* fixed formatting
* modified files to meet style guidelines, edited docstrings and added some doctests
* added and fixed doctests in lazy_segment_tree.py
* fixed errors in doctests
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* created dijkstra's two stack algorithm
* Made changes to dijkstras two stack algorithm for documentation and
testing purposes.
* Made changes to dijkstras two stack algorithm for documentation and
testing purposes.
* Fixed Grammar Mistake
* Added Explanation Reference
* Imported stack instead of using my own
Changed a few minor things.
* Imported stack instead of using my own
Changed a few minor things.
* Update data_structures/stacks/dijkstras_two_stack_algorithm.py
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* Update dijkstras_two_stack_algorithm.py
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* adding static type checking to basic_binary_tree.py
* Add static type checking to functions with None return type
* Applying code review comments
* Added missing import statement
* fix spaciing
* "cleaned up depth_of_tree"
* Add doctests and then streamline display() and is_full_binary_tree()
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* Fix doubly linked list algorithm
* Fix bug with insert_at_tail method
Create __str__() method for Node class and LinkedList class
* Simplify __str__() of LinkedList
Returns empty string if there are no elements in the list
* Fix description
* Update __init__.py
please add a function to get length of linked list
* Update __init__.py
* Update doubly_linked_list.py
all size function lo doubly linked list class
* prime number _better method
* comments
* Updated init.py 2
made it more pythonic
* updated length function
* commnet in linked_list construtor
* Update data_structures/linked_list/__init__.py
accepecting changes
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* Update data_structures/linked_list/__init__.py
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* Update __init__.py
* Revert changes to doubly_linked_list.py
* Revert changes to prime_check.py
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* Tighten up psf/black and flake8
* Fix some tests
* Fix some E741
* Fix some E741
* updating DIRECTORY.md
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* Precision must be a nonnegative integer
* fixup! Format Python code with psf/black push
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* added __len__ function
Added a function to count number of nodes in linked list
* Updated __len__ method
used snake_case instead of camel case
* Add tests to __len__()
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* Fix psf/black issues than fail the build
* fixup! Format Python code with psf/black push
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* 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
* With all suggested changes ✅
possibly covered all the recommended guidelines
* Updated with both slow and faster algorithms
possibally covered all the recomendations
* removed the time comparision part!
* Update data_structures/stacks/next_greater_element.py
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* Update data_structures/stacks/next_greater_element.py
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* Update data_structures/stacks/next_greater_element.py
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* Update data_structures/stacks/next_greater_element.py
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* Add benchmark using timeit
https://docs.python.org/3/library/timeit.html
The performance delta between these two implementation is quite small...
```
next_greatest_element_slow(): 1.843442126
next_greatest_element(): 1.828941414
```
* Optimize slow() to create fast() - Three algorithms in the race
Three algorithms in the race
* Use a bigger test array with floats, negatives, zero
* Setup import next_greatest_element_fast
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* Fix rehashing function will not call insert_data function
* Fix typo
* Update loop syntax instead of allocating a list
Co-Authored-By: Christian Clauss <cclauss@me.com>
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* spelling corrections
* review
* improved documentation, removed redundant variables, added testing
* added type hint
* camel case to snake case
* spelling fix
* review
* python --> Python # it is a brand name, not a snake
* explicit cast to int
* spaces in int list
* "!= None" to "is not None"
* Update comb_sort.py
* various spelling corrections in documentation & several variables naming conventions fix
* + char in file name
* import dependency - bug fix
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* enhance swapping code in link
* heapify do not recursive
* fix
* fix identifier and add test
* typing.Any and LinkedList instead of Linkedlist
* typing.Any and LinkedList instead of Linkedlist
* Code Upload
* Code Upload
* Delete n_possible_bst
* Find the N Possible Binary Tree and Binary Tree from given Nth Number of Node.
* Update in Test
* Update and rename n_possible_bst.py to number_of_possible_binary_trees.py
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