binary-tree

问题 We have to write the nodes of a binary tree to a file. What is the most space efficient way of writing a binary tree . We can store it in array format with parent in position i and its children in 2i , 2i+1 . But this will waste lot of space in case of sparse binary trees. 回答1: One method which I like is to store the preorder traversal, but also include the 'null' nodes in there. Storing the 'null' nodes removes the need for also storing the inorder of the tree. Some advantages of this method

问题 To begin with, this question is not a dup of this one, but builds on it. Taking the tree in that question as an example, 1 / \ 2 3 / / \ 4 5 6 How would you modify your program to print it so, 1 2 3 4 5 6 rather than the general 1 2 3 4 5 6 I'm basically looking for intuitions on the most efficient way to do it - I've got a method involving appending the result to a list, and then looping through it. A more efficient way might be to store the last element in each level as it is popped, and

问题 I am confused about the terminology of the below trees, I have been studying the Tree, and I am unable to distinguish between these trees: a) Complete Binary Tree b) Strict Binary Tree c) Full Binary Tree Please help me to differentiate among these trees. When and where these trees are used in Data Structure? 回答1: Wikipedia yielded A full binary tree (sometimes proper binary tree or 2-tree or strictly binary tree) is a tree in which every node other than the leaves has two children. So you

问题 I have just learnt how to create a binary search data structure, which is going to be used to store thousands of words from a dictionary. The problem that I am getting is that it is taking a long time to count add and remove data. Usually 199263ms or 200 seconds for 100000 words to count. I was told that having a tree that can self balance will improve the efficiency and make the operations faster. My question is how can I make my tree auto balance so to make it efficient. I have made slight

问题 I have just learnt how to create a binary search data structure, which is going to be used to store thousands of words from a dictionary. The problem that I am getting is that it is taking a long time to count add and remove data. Usually 199263ms or 200 seconds for 100000 words to count. I was told that having a tree that can self balance will improve the efficiency and make the operations faster. My question is how can I make my tree auto balance so to make it efficient. I have made slight

问题 i have to count how many times a word exists in the binary tree and i couldn't do this ,how can i do this? here is my code ; #include "stdio.h" #include "stdlib.h" #include "string.h" struct treeNode { char data[20]; int count; struct treeNode *leftPtr, *rightPtr; }; int number = 1; typedef struct treeNode TreeNode; typedef TreeNode *TreeNodePtr; void insertNode(TreeNodePtr *treePtr, char word[]); void alphabetic(TreeNodePtr treePtr); int main() { /*reading strings from the file and add them

问题 i have to count how many times a word exists in the binary tree and i couldn't do this ,how can i do this? here is my code ; #include "stdio.h" #include "stdlib.h" #include "string.h" struct treeNode { char data[20]; int count; struct treeNode *leftPtr, *rightPtr; }; int number = 1; typedef struct treeNode TreeNode; typedef TreeNode *TreeNodePtr; void insertNode(TreeNodePtr *treePtr, char word[]); void alphabetic(TreeNodePtr treePtr); int main() { /*reading strings from the file and add them

问题 I would like feedback on my code please. It is an assignment for school where we were asked to write a function that swaps the left and right side binary trees. Our class that our professor gave us was swapBinaryTrees and the rest was left up to us. I am getting a whole lot of compiler errors and I am not sure where I am going wrong with my syntax. I am getting errors when I compile it like line 14 expected init-declarator '<'token the line in reference is void binaryTreeSearch<elemType>:

问题 I would like feedback on my code please. It is an assignment for school where we were asked to write a function that swaps the left and right side binary trees. Our class that our professor gave us was swapBinaryTrees and the rest was left up to us. I am getting a whole lot of compiler errors and I am not sure where I am going wrong with my syntax. I am getting errors when I compile it like line 14 expected init-declarator '<'token the line in reference is void binaryTreeSearch<elemType>:

问题 I'm trying binary tree type constructor which is: data Tree a = Leaf a | Branch a (Tree a) (Tree a) How we prove that not all kinds of binary tree can be represented by this constructor? How we improve this definition to cover all types of binary tree? And how it works? 回答1: Your Tree a has labels of type a at every Branch and every Leaf constructor. So, for example, Branch 'u' (Branch 'n' (Leaf 'i') (Leaf 'p')) (Leaf 'z') looks like this: +-'u'-+ | | +-'n'-+ 'z' | | 'i' 'p' That excludes,