Updated object to class name (#63)

Author: TarunTomar122

pydatastructs/linear_data_structures/arrays.py

@@ -69,7 +69,7 @@ def __new__(cls, dtype=NoneType, *args, **kwargs):
         if dtype is NoneType or len(args) not in (1, 2):
             raise ValueError("1D array cannot be created due to incorrect"
                                 " information.")
-        obj = object.__new__(cls)
+        obj = Array.__new__(cls)
         obj._dtype = dtype
         if len(args) == 2:
             if _check_type(args[0], list) and \

pydatastructs/linear_data_structures/linked_lists.py

@@ -61,7 +61,7 @@ class DoublyLinkedList(LinkedList):
     __slots__ = ['head', 'tail', 'size']
 
     def __new__(cls):
-        obj = object.__new__(cls)
+        obj = LinkedList.__new__(cls)
         obj.head = None
         obj.tail = None
         obj.size = 0

pydatastructs/trees/heaps.py

@@ -11,7 +11,7 @@ class Heap:
     """
     pass
 
-class BinaryHeap:
+class BinaryHeap(Heap):
     """
     Represents Binary Heap.
 
@@ -67,7 +67,7 @@ class BinaryHeap:
     __slots__ = ['_comp', 'heap', 'heap_property', '_last_pos_filled']
 
     def __new__(cls, elements=None, heap_property="min"):
-        obj = object.__new__(cls)
+        obj = Heap.__new__(cls)
         obj.heap_property = heap_property
         if heap_property == "min":
             obj._comp = lambda key_parent, key_child: key_parent <= key_child