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Implement SplayTree #5142
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Implement SplayTree #5142
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Codecov ReportAttention: Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## master #5142 +/- ##
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+ Coverage 38.58% 38.88% +0.30%
- Complexity 2378 2414 +36
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Files 516 517 +1
Lines 15313 15394 +81
Branches 2957 2974 +17
============================================
+ Hits 5908 5986 +78
Misses 9120 9120
- Partials 285 288 +3 ☔ View full report in Codecov by Sentry. |
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What do you think about introducing a method: List<Integer> traverse(TraverseOrder traverseOrder)
, where TraverseOrder
is an enum? This will allow to make the other methods private.
Does your implementation work for duplicated keys?
Please add the missing tests and please update your branch (there were some changes regarding the static analysis).
src/main/java/com/thealgorithms/datastructures/trees/SplayTree.java
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src/main/java/com/thealgorithms/datastructures/trees/SplayTree.java
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src/main/java/com/thealgorithms/datastructures/trees/SplayTree.java
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src/main/java/com/thealgorithms/datastructures/trees/SplayTree.java
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src/main/java/com/thealgorithms/datastructures/trees/SplayTree.java
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src/main/java/com/thealgorithms/datastructures/trees/SplayTree.java
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src/test/java/com/thealgorithms/datastructures/trees/SplayTreeTest.java
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The current implementation of the Splay Tree does not handle duplicate keys explicitly. Here are a few possible approaches:
I think the simplest and most used approach is that when inserting a node with a duplicated key, we should update the existing node with the same key. What do you think about these approaches, we will choose the one to implement. |
I think we should not allow duplicate keys and explicitly throw an exception if one is trying to include already existing key. I looked at the existing implementations of BST in this repository and it is a total mess - each implementation reacts differently. |
I have updated the test cases, but there are a few partially covered lines. If you have any suggestion that make the code to be 100% covered, feel free to propose. |
- Do not allow duplicate keys and explicitly throw an exception if one is trying to include already existing key - Throw error on deletion if tree is empty - Performing the splay operation before recursion, ensuring that the node to be deleted is at the root or very close to it, simplifying the deletion process.
- inner assignments should be avoided
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I have refactored the implementation to disallow inserting duplicated keys and to throw an error if this occurs. I also handle deletion on an empty tree and simplify the deletion process. |
clang-format -i --style=file path/to/your/file.java