58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
/*##############################################################################
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## Author: Shaun Reed ##
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## Legal: All Content (c) 2021 Shaun Reed, all rights reserved ##
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## About: An example of a binary search tree implementation ##
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## ##
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## Contact: shaunrd0@gmail.com | URL: www.shaunreed.com | GitHub: shaunrd0 ##
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################################################################################
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## bst.h
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*/
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#ifndef BST_H
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#define BST_H
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#include <iostream>
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// TODO: Add balance() method to balance overweight branches
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class BinarySearchTree {
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public:
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BinarySearchTree() : root(nullptr) {};
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BinarySearchTree(const BinarySearchTree &rhs) : root(clone(rhs.root)) {};
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BinarySearchTree& operator=(BinarySearchTree rhs);
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~BinarySearchTree() { makeEmpty(root);};
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int findMin() const;
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int findMax() const;
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bool contains(const int &x) const;
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bool isEmpty() const;
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void insert(const int &x);
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void remove(const int &x);
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void makeEmpty();
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void printInOrder() const;
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void printPostOrder() const;
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void printPreOrder() const;
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private:
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struct BinaryNode{
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int element;
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BinaryNode *left;
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BinaryNode *right;
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BinaryNode(const int &el, BinaryNode *lt, BinaryNode *rt)
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:element(el), left(lt), right(rt) {};
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};
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BinaryNode *root;
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BinaryNode * clone(BinaryNode *t) const;
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void insert(const int &x, BinaryNode *&t) const;
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void remove(const int &x, BinaryNode *&t) const;
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BinaryNode * findMin(BinaryNode *t) const;
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BinaryNode * findMax(BinaryNode *t) const;
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bool contains(const int &x, BinaryNode *t) const;
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void makeEmpty(BinaryNode * & t);
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void printInOrder(BinaryNode *t) const;
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void printPostOrder(BinaryNode *t) const;
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void printPreOrder(BinaryNode *t) const;
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};
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#endif //BST_H
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