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When adding the second word's last letter, it only compares the previous word's prefix—the last letter of the word already in the Radix Tree: 'C'—and the letter to be added—the last letter of the word we're currently adding: 'C'. So it wrongly passes the "Case 1" check, marks the current node as a leaf node when it already was, then returns when there's still one more letter to add.
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```
Words: ['A', 'AA', 'AAA', 'AAAA']
Tree:
- A (leaf)
-- A (leaf)
--- A (leaf)
---- A (leaf)
```
- Current incorrect output:
```
Words: ['A', 'AA', 'AAA', 'AAAA']
Tree:
- A (leaf)
-- AA (leaf)
--- A (leaf)
```
*N.B.* This passed test cases for [Croatian Open Competition in Informatics 2012/2013 Contest #3 Task 5 HERKABE](https://hsin.hr/coci/archive/2012_2013/)
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> This is the first [psf/black] release of 2023, and following our stability policy, it comes with a number of improvements to our stable style…
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* I love mypy
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* feat: Binary tree node sum (#7020)
* feat: Sum of all nodes in binary tree explanation (#7020)
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* refactor: Change replace method with `__iter__` overriding (#7020)
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* refactor: Make code more understandable
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* Binary Search Tree Inorder Traversal
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* Binary Search Tree Inorder Traversal v2
* Binary Search Tree Inorder Traversal
* Binary Search Tree Inorder Traversal
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* Updated and removed print statement
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* Add typing
hacktoberfest
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* Enhance fenwick_tree.py
* Change update to add in fenwick_tree.py
* Some changes
* Fix bug
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* Add rank query to FenwickTree
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* change `List` to `list`
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* renames prime functions and occurances in comments
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* MAINT: Used f-string method
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