'Root null' presentation slideshows

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Chapter 10

Chapter 10. Binary Trees. Chapter Objectives. Learn about binary trees Explore various binary tree traversal algorithms Learn how to organize data in a binary search tree Discover how to insert and delete items in a binary search tree Explore nonrecursive binary tree traversal algorithms

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Binary Trees

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CSE 373: Data Structures and Algorithms

CSE 373: Data Structures and Algorithms. Lecture 8: Trees. "the". "of". "if". "to". "down". "from". "by". "she". "you". "in". set.contains("to"). true. "him". "why". set.contains("be"). false. set. Set ADT. set : A collection that does not allow duplicates

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????????? ?? ????????. ??????????? ??????. 8. class Tree { static private class TreeNode { Object key; TreeNode left, right; public TreeNode(Object key, TreeNode left, TreeNode right) { this .key = key;

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Search Trees - Motivation

Search Trees - Motivation. Assume you would like to store several ( key , value ) pairs in a data structure that would support the following operations efficiently Insert ( key, value ) Delete ( key, value ) Find ( key ) Min () Max () What are your alternatives? Use an Array

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Dictionnaire

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Iterator

Iterator. 5. 4. iter 1. 3. 2. 6. 5. 4. 1. 9. 2. while (iter.hasNext()) { ..... ..... iter.next()..... }. 5. iter 2. 3. 8. 1. 2. 7. 1. iter 3. In what order?. The internal information and structures are protected. 6. 2. 7. 4. 1. 3. 9. 8.

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Binary Search Trees (BST)

root. 25. 50. 15. 35. 70. 10. 22. 31. 44. 66. 90. 4. 12. 18. 24. Binary Search Trees (BST). Hierarchical data structure with a single pointer to root node Each node has at most two child nodes (a left and a right child) Nodes are organized by the Binary Search property:

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CS 210 Revision 2 Spring 2012

CS 210 Revision 2 Spring 2012. BST, Hash Tables, Heaps. Write a function INTERNAL to return the number of internal nodes in a BST. template <class keyType , class dataType > int binaryTree < keyType , dataType >::INTERNAL() { NodePointer aRoot ; aRoot = root;

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import java.io.*; class Tree implements Serializable {

import java.io.*; class Tree implements Serializable { static private class Node implements Serializable { int _data; Node _ls, _rs; Node(int data) {_data = data; _ls = _rs = null; } } Node _root=null; public void insert(int data) { if(_root==null) {

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