Priority Queue abstract data type (ADT) can be implemented using other data structures (including Heaps) like:
- Unordered Array
 - Unordered List
 - Ordered Array
 - Ordered List
 - Binary Search Tree (BST)
 - Balanced Binary Search Tree (AVL-tree)
 - Binary heap
 
Compare the time efficiency of heap implementation for main operations in Priority Queue ADT with other possible implementations:
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| Implementation | Insertion   | Deletion(DeleteMax/DeleteMin)|Find Max/Min
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| Unordered Array| 1           | n                            | n
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| Unordered List | 1           | n                            | n
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| Ordered Array  | n           | 1                            | 1
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| Ordered List   | n           | 1                            | 1
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| BST            | logn (avg.) | logn (avg.)                  | logn (avg.)
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| Balanced BST   | log n       | log n                        | log n
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| Binary Heaps   | log n       | log n                        | 1