Various ruff fixes

DIRECTORY.md

@@ -443,6 +443,7 @@
   * [Present Value](financial/present_value.py)
   * [Price Plus Tax](financial/price_plus_tax.py)
   * [Simple Moving Average](financial/simple_moving_average.py)
+  * [Straight Line Depreciation](financial/straight_line_depreciation.py)
   * [Time And Half Pay](financial/time_and_half_pay.py)
 
 ## Fractals
@@ -790,6 +791,7 @@
   * [Sumset](maths/sumset.py)
   * [Sylvester Sequence](maths/sylvester_sequence.py)
   * [Tanh](maths/tanh.py)
+  * [Test Factorial](maths/test_factorial.py)
   * [Test Prime Check](maths/test_prime_check.py)
   * [Three Sum](maths/three_sum.py)
   * [Trapezoidal Rule](maths/trapezoidal_rule.py)

ciphers/hill_cipher.py

@@ -79,7 +79,7 @@ def replace_digits(self, num: int) -> str:
         >>> hill_cipher.replace_digits(26)
         '0'
         """
-        return self.key_string[round(num)]
+        return self.key_string[(num)]
 
     def check_determinant(self) -> None:
         """

data_structures/binary_tree/non_recursive_segment_tree.py

@@ -39,12 +39,12 @@
 from __future__ import annotations
 
 from collections.abc import Callable
-from typing import Any, Generic, TypeVar
+from typing import Any, TypeVar
 
 T = TypeVar("T")
 
 
-class SegmentTree(Generic[T]):
+class SegmentTree[T]:
     def __init__(self, arr: list[T], fnc: Callable[[T, T], T]) -> None:
         """
         Segment Tree constructor, it works just with commutative combiner.

data_structures/hashing/hash_map.py

@@ -10,14 +10,14 @@
 
 from collections.abc import Iterator, MutableMapping
 from dataclasses import dataclass
-from typing import Generic, TypeVar
+from typing import TypeVar
 
 KEY = TypeVar("KEY")
 VAL = TypeVar("VAL")
 
 
 @dataclass(slots=True)
-class _Item(Generic[KEY, VAL]):
+class _Item[KEY, VAL]:
     key: KEY
     val: VAL
 

data_structures/heap/heap.py

@@ -2,7 +2,7 @@
 
 from abc import abstractmethod
 from collections.abc import Iterable
-from typing import Generic, Protocol, TypeVar
+from typing import Protocol, TypeVar
 
 
 class Comparable(Protocol):
@@ -22,7 +22,7 @@ def __eq__(self: T, other: object) -> bool:
 T = TypeVar("T", bound=Comparable)
 
 
-class Heap(Generic[T]):
+class Heap[T: Comparable]:
     """A Max Heap Implementation
 
     >>> unsorted = [103, 9, 1, 7, 11, 15, 25, 201, 209, 107, 5]

data_structures/heap/randomized_heap.py

@@ -4,12 +4,12 @@
 
 import random
 from collections.abc import Iterable
-from typing import Any, Generic, TypeVar
+from typing import Any, TypeVar
 
 T = TypeVar("T", bound=bool)
 
 
-class RandomizedHeapNode(Generic[T]):
+class RandomizedHeapNode[T: bool]:
     """
     One node of the randomized heap. Contains the value and references to
     two children.
@@ -73,7 +73,7 @@ def merge(
         return root1
 
 
-class RandomizedHeap(Generic[T]):
+class RandomizedHeap[T: bool]:
     """
     A data structure that allows inserting a new value and to pop the smallest
     values. Both operations take O(logN) time where N is the size of the

data_structures/heap/skew_heap.py

@@ -3,12 +3,12 @@
 from __future__ import annotations
 
 from collections.abc import Iterable, Iterator
-from typing import Any, Generic, TypeVar
+from typing import Any, TypeVar
 
 T = TypeVar("T", bound=bool)
 
 
-class SkewNode(Generic[T]):
+class SkewNode[T: bool]:
     """
     One node of the skew heap. Contains the value and references to
     two children.
@@ -87,7 +87,7 @@ def merge(
         return result
 
 
-class SkewHeap(Generic[T]):
+class SkewHeap[T: bool]:
     """
     A data structure that allows inserting a new value and to pop the smallest
     values. Both operations take O(logN) time where N is the size of the

data_structures/linked_list/skip_list.py

@@ -7,13 +7,13 @@
 
 from itertools import pairwise
 from random import random
-from typing import Generic, TypeVar
+from typing import TypeVar
 
 KT = TypeVar("KT")
 VT = TypeVar("VT")
 
 
-class Node(Generic[KT, VT]):
+class Node[KT, VT]:
     def __init__(self, key: KT | str = "root", value: VT | None = None):
         self.key = key
         self.value = value
@@ -49,7 +49,7 @@ def level(self) -> int:
         return len(self.forward)
 
 
-class SkipList(Generic[KT, VT]):
+class SkipList[KT, VT]:
     def __init__(self, p: float = 0.5, max_level: int = 16):
         self.head: Node[KT, VT] = Node[KT, VT]()
         self.level = 0

data_structures/queues/queue_by_list.py

@@ -1,13 +1,10 @@
 """Queue represented by a Python list"""
 
 from collections.abc import Iterable
-from typing import Generic, TypeVar
 
-_T = TypeVar("_T")
 
-
-class QueueByList(Generic[_T]):
-    def __init__(self, iterable: Iterable[_T] | None = None) -> None:
+class QueueByList[T]:
+    def __init__(self, iterable: Iterable[T] | None = None) -> None:
         """
         >>> QueueByList()
         Queue(())
@@ -16,7 +13,7 @@ def __init__(self, iterable: Iterable[_T] | None = None) -> None:
         >>> QueueByList((i**2 for i in range(1, 4)))
         Queue((1, 4, 9))
         """
-        self.entries: list[_T] = list(iterable or [])
+        self.entries: list[T] = list(iterable or [])
 
     def __len__(self) -> int:
         """
@@ -58,7 +55,7 @@ def __repr__(self) -> str:
 
         return f"Queue({tuple(self.entries)})"
 
-    def put(self, item: _T) -> None:
+    def put(self, item: T) -> None:
         """Put `item` to the Queue
 
         >>> queue = QueueByList()
@@ -72,7 +69,7 @@ def put(self, item: _T) -> None:
 
         self.entries.append(item)
 
-    def get(self) -> _T:
+    def get(self) -> T:
         """
         Get `item` from the Queue
 
@@ -118,7 +115,7 @@ def rotate(self, rotation: int) -> None:
         for _ in range(rotation):
             put(get(0))
 
-    def get_front(self) -> _T:
+    def get_front(self) -> T:
         """Get the front item from the Queue
 
         >>> queue = QueueByList((10, 20, 30))

data_structures/queues/queue_by_two_stacks.py

@@ -1,13 +1,10 @@
 """Queue implementation using two stacks"""
 
 from collections.abc import Iterable
-from typing import Generic, TypeVar
 
-_T = TypeVar("_T")
 
-
-class QueueByTwoStacks(Generic[_T]):
-    def __init__(self, iterable: Iterable[_T] | None = None) -> None:
+class QueueByTwoStacks[T]:
+    def __init__(self, iterable: Iterable[T] | None = None) -> None:
         """
         >>> QueueByTwoStacks()
         Queue(())
@@ -16,8 +13,8 @@ def __init__(self, iterable: Iterable[_T] | None = None) -> None:
         >>> QueueByTwoStacks((i**2 for i in range(1, 4)))
         Queue((1, 4, 9))
         """
-        self._stack1: list[_T] = list(iterable or [])
-        self._stack2: list[_T] = []
+        self._stack1: list[T] = list(iterable or [])
+        self._stack2: list[T] = []
 
     def __len__(self) -> int:
         """
@@ -59,7 +56,7 @@ def __repr__(self) -> str:
         """
         return f"Queue({tuple(self._stack2[::-1] + self._stack1)})"
 
-    def put(self, item: _T) -> None:
+    def put(self, item: T) -> None:
         """
         Put `item` into the Queue
 
@@ -74,7 +71,7 @@ def put(self, item: _T) -> None:
 
         self._stack1.append(item)
 
-    def get(self) -> _T:
+    def get(self) -> T:
         """
         Get `item` from the Queue
 

data_structures/stacks/stack.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import Generic, TypeVar
+from typing import TypeVar
 
 T = TypeVar("T")
 
@@ -13,7 +13,7 @@ class StackUnderflowError(BaseException):
     pass
 
 
-class Stack(Generic[T]):
+class Stack[T]:
     """A stack is an abstract data type that serves as a collection of
     elements with two principal operations: push() and pop(). push() adds an
     element to the top of the stack, and pop() removes an element from the top

data_structures/stacks/stack_with_doubly_linked_list.py

@@ -3,19 +3,19 @@
 
 from __future__ import annotations
 
-from typing import Generic, TypeVar
+from typing import TypeVar
 
 T = TypeVar("T")
 
 
-class Node(Generic[T]):
+class Node[T]:
     def __init__(self, data: T):
         self.data = data  # Assign data
         self.next: Node[T] | None = None  # Initialize next as null
         self.prev: Node[T] | None = None  # Initialize prev as null
 
 
-class Stack(Generic[T]):
+class Stack[T]:
     """
     >>> stack = Stack()
     >>> stack.is_empty()

data_structures/stacks/stack_with_singly_linked_list.py

@@ -3,12 +3,12 @@
 from __future__ import annotations
 
 from collections.abc import Iterator
-from typing import Generic, TypeVar
+from typing import TypeVar
 
 T = TypeVar("T")
 
 
-class Node(Generic[T]):
+class Node[T]:
     def __init__(self, data: T):
         self.data = data
         self.next: Node[T] | None = None
@@ -17,7 +17,7 @@ def __str__(self) -> str:
         return f"{self.data}"
 
 
-class LinkedStack(Generic[T]):
+class LinkedStack[T]:
     """
     Linked List Stack implementing push (to top),
     pop (from top) and is_empty

graphs/graph_adjacency_list.py

@@ -21,14 +21,14 @@
 import random
 import unittest
 from pprint import pformat
-from typing import Generic, TypeVar
+from typing import TypeVar
 
 import pytest
 
 T = TypeVar("T")
 
 
-class GraphAdjacencyList(Generic[T]):
+class GraphAdjacencyList[T]:
     def __init__(
         self, vertices: list[T], edges: list[list[T]], directed: bool = True
     ) -> None:

graphs/graph_adjacency_matrix.py

@@ -21,14 +21,14 @@
 import random
 import unittest
 from pprint import pformat
-from typing import Generic, TypeVar
+from typing import TypeVar
 
 import pytest
 
 T = TypeVar("T")
 
 
-class GraphAdjacencyMatrix(Generic[T]):
+class GraphAdjacencyMatrix[T]:
     def __init__(
         self, vertices: list[T], edges: list[list[T]], directed: bool = True
     ) -> None:

graphs/graph_list.py

@@ -6,12 +6,12 @@
 from __future__ import annotations
 
 from pprint import pformat
-from typing import Generic, TypeVar
+from typing import TypeVar
 
 T = TypeVar("T")
 
 
-class GraphAdjacencyList(Generic[T]):
+class GraphAdjacencyList[T]:
     """
     Adjacency List type Graph Data Structure that accounts for directed and undirected
     Graphs.  Initialize graph object indicating whether it's directed or undirected.

graphs/minimum_spanning_tree_kruskal2.py

@@ -1,19 +1,19 @@
 from __future__ import annotations
 
-from typing import Generic, TypeVar
+from typing import TypeVar
 
 T = TypeVar("T")
 
 
-class DisjointSetTreeNode(Generic[T]):
+class DisjointSetTreeNode[T]:
     # Disjoint Set Node to store the parent and rank
     def __init__(self, data: T) -> None:
         self.data = data
         self.parent = self
         self.rank = 0
 
 
-class DisjointSetTree(Generic[T]):
+class DisjointSetTree[T]:
     # Disjoint Set DataStructure
     def __init__(self) -> None:
         # map from node name to the node object
@@ -46,7 +46,7 @@ def union(self, data1: T, data2: T) -> None:
         self.link(self.find_set(data1), self.find_set(data2))
 
 
-class GraphUndirectedWeighted(Generic[T]):
+class GraphUndirectedWeighted[T]:
     def __init__(self) -> None:
         # connections: map from the node to the neighbouring nodes (with weights)
         self.connections: dict[T, dict[T, int]] = {}