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Add comments to data-structure complexity table.
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@trekhleb
trekhleb committed May 25, 2018
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Expand Up @@ -199,17 +199,17 @@ Below is the list of some of the most used Big O notations and their performance

### Data Structure Operations Complexity
| Data Structure | Access | Search | Insertion | Deletion |
| ----------------------- | :-------: | :-------: | :-------: | :-------: |
| **Array** | 1 | n | n | n |
| **Stack** | n | n | 1 | 1 |
| **Queue** | n | n | 1 | 1 |
| **Linked List** | n | n | 1 | 1 |
| **Hash Table** | - | n | n | n |
| **Binary Search Tree** | n | n | n | n |
| **B-Tree** | log(n) | log(n) | log(n) | log(n) |
| **Red-Black Tree** | log(n) | log(n) | log(n) | log(n) |
| **AVL Tree** | log(n) | log(n) | log(n) | log(n) |
| Data Structure | Access | Search | Insertion | Deletion | Comments |
| ----------------------- | :-------: | :-------: | :-------: | :-------: | :-------- |
| **Array** | 1 | n | n | n | |
| **Stack** | n | n | 1 | 1 | |
| **Queue** | n | n | 1 | 1 | |
| **Linked List** | n | n | 1 | 1 | |
| **Hash Table** | - | n | n | n | In case of perfect hash function costs would be O(1) |
| **Binary Search Tree** | n | n | n | n | |
| **B-Tree** | log(n) | log(n) | log(n) | log(n) | |
| **Red-Black Tree** | log(n) | log(n) | log(n) | log(n) | |
| **AVL Tree** | log(n) | log(n) | log(n) | log(n) | |

### Array Sorting Algorithms Complexity

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