Added Fix and High Quality PNGs in Readme.md

README.md

@@ -1,4 +1,4 @@
-    updated: Thursday, 24th February 2022
+    updated: Wednesday, 6th April 2022
 
 <div align=center>
     <a href="https://github.com/warmachine028/datastax">
@@ -20,25 +20,10 @@
 
 ## What's New?
 
-- Added Sum Segment Tree
-- Added Min Segment Tree
-- Added Huffman Tree
-    - data encoder
-    - data decoder
-    - Huffman Code
-    - Huffman Table
-    - compression ratio
-    - space saved
-- Added Red Black Tree - 🗸 TESTED
-- Added Splay Tree - 🗸 TESTED
-- Added Delete methods in: 🗸 TESTED
-    - BinaryTree
-    - BinarySearchTree
-    - AVLTree
-- Enhanced string representation of all LinkedLists
-- Added Custom Comparator for PriorityQueue
-- Added name-mangler function for items with multiline string representations
-- Added HuffmanTable object for storing and visualizing huffman-table
+- Added Mandatory Keyword arguments to avoid confusion in:
+  - Arrays 
+  - ThreadedBinaryTree 
+- Added High Quality PNGs in README.md
 
 ## Table of Contents
 
@@ -148,202 +133,61 @@ pip install datastax
 
 - **Queue**
 
-```py
-from datastax.arrays import Queue
+![queue](./assets/Usage/queue.png)
 
-# Building a Queue Data Structure with fixed capacity
-queue = Queue(capacity=5)
-
-# Enqueueing items inside queue
-for item in ('item 1', 'item 2'):
-    queue.enqueue(item)
-
-# Performing Dequeue Operation 
-queue.dequeue()
-
-queue.enqueue('item 3')
-print(queue)
-```
-
-```shell
-$ OUTPUT:
-
-         ┌──────────╥──────────┬──────────┐
-FRONT -> │    ╳     ║  item 2  │  item 3  │ <- REAR
-         └──────────╨──────────┴──────────┘
-      
-```
+![queue_output](./assets/Usage/queue_output.png)
 
 ---------------------------------------------------
 
 - **BinaryTree**
 
-```py
-from datastax.trees import BinaryTree
+![BinaryTree](./assets/Usage/binaryTree.png)
 
-bt = BinaryTree([1, 2, 3, 4, 5])
-print(bt)
-```
-
-```shell
-$ OUTPUT:
-
-             1           
-       ┌─────┴─────┐     
-       2           3     
-    ┌──┴──┐              
-    4     5              
-```
+![BinaryTree_output](./assets/Usage/binaryTree_output.png)
 
 ---------------------------------------------------
 
 - **MinHeapTree**
 
-```py
-from datastax.trees import MinHeapTree
+![MinHeapTree](./assets/Usage/mht.png)
 
-MiHT = MinHeapTree([1, 2, 4, 2, 6, 5, 9, 18, 3, 2])
-print(MiHT)
-```
-
-```shell
-$ OUTPUT
-
-                        1                       
-            ┌───────────┴───────────┐           
-            2                       4           
-      ┌─────┴─────┐           ┌─────┴─────┐     
-      2           2           5           9     
-   ┌──┴──┐     ┌──┘                             
-  18     3     6    
-
-```
+![MinHeapTree_output](./assets/Usage/mht_output.png)
 
 ---------------------------------------------------
 
 - **ThreadedBinaryTree**
 
-```py
-from datastax.trees import ThreadedBinaryTree as Tbt
-
-logic = str("BinaryTree")
-tbt = Tbt(['a', 'b', 'c', 'd', 'e'], insertion_logic=logic)
-print(tbt)
-```
+![ThreadedBinaryTree](./assets/Usage/tbt.png)
 
-```shell
-$ OUTPUT               
-                                   ┌───┐
-   ┌───────────────────────────> DUMMY │<──────────────┐
-   │                           ┌───┴───┘               │
-   │                           a                       │        
-   │           ┌───────────────┴───────────────┐       │        
-   │           b           │           │       c       │        
-   │   ┌───────┴───────┐   │           └───────┴───────┘        
-   │   d   │       │   e   │                                    
-   └───┴───┘       └───┴───┘                                    
-
-```
+![ThreadedBinaryTree_output](./assets/Usage/tbt_output.png)
 
 ---------------------------------------------------
 
 - **SumSegmentTree**
 
-```py
-from datastax.trees import SumSegmentTree
-
-sst = SumSegmentTree([1, 3, 5, 7, 9, 11])
-print(sst)
-print(sst.preorder_print())
-```
+![SumSegmentTree](./assets/Usage/sst.png)
 
-```shell
-$ OUTPUT        
-                                                
-                       36                       
-                      [0:5]                     
-            ┌───────────┴───────────┐           
-            9                      27           
-          [0:2]                   [3:5]         
-      ┌─────┴─────┐           ┌─────┴─────┐     
-      4           5          16          11     
-    [0:1]                   [3:4]               
-   ┌──┴──┐                 ┌──┴──┐              
-   1     3                 7     9              
-
-
-36 [0:5]
-├─▶ 9 [0:2]
-│   ├─▶ 4 [0:1]
-│   │   ├─▶ 1 
-│   │   └─▶ 3 
-│   └─▶ 5 
-└─▶ 27 [3:5]
-    ├─▶ 16 [3:4]
-    │   ├─▶ 7 
-    │   └─▶ 9 
-    └─▶ 11             
-                  
-```
+![SumSegmentTree_Output](./assets/Usage/sst_output.png)
 
 ---------------------------------------------------
 
 - **HuffmanTree**
 
-```py
-from datastax.trees import HuffmanTree
-
-string = str("Espresso Express")
-hft = HuffmanTree(string)
-print(hft)
-```
+![HuffmanTree](./assets/Usage/hft.png)
 
-```shell
-$ OUTPUT
-                                               16                                               
-                         0                      │                      1                        
-                        ┌───────────────────────┴───────────────────────┐                       
-                        7                                               9                       
-             0          │          1                         0          │          1            
-            ┌───────────┴───────────┐                       ┌───────────┴───────────┐           
-            3                       4                       4                       s           
-       0    │    1             0    │    1             0    │    1                  5           
-      ┌─────┴─────┐           ┌─────┴─────┐           ┌─────┴─────┐                             
-      x           2           e           r           E           p                             
-      1         0 │ 1         2           2           2           2                             
-               ┌──┴──┐                                                                          
-               o                                                                                
-               1     1       
-```
+![HuffmanTree_Output](./assets/Usage/hft_output.png)
 
 ---------------------------------------------------
 
 - **RedBlackTree**
 
-```py
-from datastax.trees import RedBlackTree
+![RedBlackTree](./assets/Usage/rbt.png)
 
-rbt = RedBlackTree([500, 236, 565, 105, 842, 497, 312, 612, 80])
-rbt.delete(236)
-print(rbt)
-```
-
-```shell
-$ OUTPUT                                                                         
-                                   500                                      
-                  ┌─────────────────┴─────────────────┐                     
-                 105                                 612                    
-         ┌────────┴────────┐                 ┌────────┴────────┐            
-        80                497               565               842           
-                       ┌───┘                                                
-                     312
-                                                                                                                                    
-```
+![RedBlackTreeOutput](./assets/Usage/rbt_output.png)
 
 ## What's Next
 
 - Enhanced Documentation
 - Better TestCases for Huffman Tree
 - Better TestCases for Segment Trees
 - Test Cases for Fibonacci Tree
-- Adding of images of trees instead of trees themselves in README 

datastax/__init__.py

@@ -1,5 +1,5 @@
 # __init__.py
 
 # Versioning of the datastax package
-__version__ = "0.3.0"
+__version__ = "0.3.1"
 __all__ = ['trees', 'linkedlists', 'arrays']

datastax/arrays/priority_queue.py

@@ -6,9 +6,9 @@
 
 
 class PriorityQueue(Queue):
-    def __init__(self, capacity: int = None,
+    def __init__(self, *, capacity: int = None,
                  custom_comparator: Callable = None):
-        super().__init__(capacity)
+        super().__init__(capacity=capacity)
         self.comparator = custom_comparator or max
 
     def swap(self, index1: int, index2: int) -> None:

datastax/arrays/queue.py

@@ -6,7 +6,7 @@
 
 
 class Queue:
-    def __init__(self, capacity: int = None):
+    def __init__(self, *, capacity: int = None):
         self._capacity = capacity if capacity is not None else math.inf
         self._array: list[Any] = []
         self._front = self._rear = 0

datastax/arrays/stack.py

@@ -6,7 +6,7 @@
 
 
 class Stack:
-    def __init__(self, capacity: int = None):
+    def __init__(self, *, capacity: int = None):
         self.capacity = capacity if capacity is not None else math.inf
         self._array: list[Any] = []
 

datastax/trees/expression_tree.py

@@ -24,7 +24,7 @@ def _construct(self, infix_expression: Union[list, str] = None
         infix_expression = [*filter(lambda x: x is not None, infix_expression)]
         self.infix_expression = ''.join(map(str, infix_expression))
         self.postfix_expression = self.infix_to_postfix()
-        stack = Stack(len(infix_expression))
+        stack = Stack(capacity=len(infix_expression))
         for item in self.postfix_expression.split():
             if self.is_operator(item):
                 try:
@@ -63,7 +63,7 @@ def infix_to_postfix(self, infix_expression=''):
             raise UnmatchedBracketPairError(self, infix_expression)
 
         postfix_expression: str = ''
-        stack = Stack(len(infix_expression))
+        stack = Stack(capacity=len(infix_expression))
         infix_expression += ')'
         stack.push('(')
         current_count = 0

datastax/trees/huffman_tree.py

@@ -33,7 +33,7 @@ def comparator(n1: HuffmanNode, n2: HuffmanNode) -> HuffmanNode:
                 _data, None, None, frequency
             ) for _data, frequency in Counter(data).items()
         )
-        p_queue = PriorityQueue(None, comparator)
+        p_queue = PriorityQueue(capacity=None, custom_comparator=comparator)
         for node in nodes:
             p_queue.enqueue(node)
 
@@ -82,6 +82,10 @@ def _calculate_huffman_code(self):
         pass
 
     def size_calculator(self) -> Optional[tuple[int, int]]:
+        """
+        Calculates the actual encoding size and total 
+        huffman encoding size with table included
+        """
         if not self.root or not self.huffman_table:
             return None
         fixed_encoding = huffman_encoding = 0

datastax/trees/private_trees/threaded_binary_tree.py

@@ -90,8 +90,9 @@ def preorder_print(self) -> str:
 
 
 class ThreadedBinaryTree(binary_tree.BinaryTree):
-    def __init__(self, array=None, insertion_logic: str = None,
-                 root: ThreadedNode = None):
+    def __init__(self, array=None, root: ThreadedNode = None, *,
+                 insertion_logic: str = None
+                 ):
         self._root: Optional[ThreadedNode] = root
         self.head = self.tail = self.root
         self.dummy_node = ThreadedNode(None, self.root)