I am trying to read/write binary trees to a file for a little project I'm working on for fun. I got frustrated and gave up; now, I am trying again! So I am writing the tree to file (or, rather, to string for now) like so:
string wBinTree(node *p)
{
string str = "";
[Code]....
But now I'm completely lost as to recreating the tree from a string. I thought of perhaps using an array/vector/string of 1's and 0's or trues and falses to keep track of where I was in the tree, but it's really beyond me.
I used a BFS to simulate graph-join structure in a C++ code, and had a binary tree that asks the user e.g. to insert a node in the tree among other options, anyhow, I reached a point where I should pass a set of vertices from the graph to the tree, but how to do so. So I wanted to ask is such a thing possible? i.e. passing vertices from a graph to a tree automatically (no user involvement is needed)?
Traversal of binary search tree. In my header file there is a function setTraversal (public) and private print file. As I understood from teacher's explanation, my setTraversal function should call the recursive print function and print the list depending on selected order (pre,in or post-order). I still cannot get my head around what should be in setTraversal function definition. All resources I read last two days explain each order separately (preorder, inorder, postorder). How can I combine them? Here is my code:
#include "NodeTypeBST.h" #include <iostream> enum TravType {PRE, IN, POST}; template<class T> class BST
I am having trouble figuring out inorder traversal in this assignment. I was given this function definition in the homework i have to declare it. The problem i am having is how to use function pointer to traverse the list.
void CBSTree<NodeType>::InOrderTraversal(void (*fPtr)(const NodeType&)) const; void CBSTree<NodeType>::InOrder(const CTreeNode<NodeType> *const nodePtr ,void (*fPtr)(const NodeType&)) const; //nodePtr is a pointer to a NodeType object (this is a recursive function, initially this points to the root). //fPtr is a pointer to a non-member function that takes a const reference to a NodeType object as input, and //returns nothing
I know without the function pointer parameter it will be like this
Following is the code for inserting elements in a tree and then retrieving them back using inorder traversal technique elements are getting inserted just fine,but the code doesn't displays the elements of the tree while performing inorder traversal..
I am trying to develop a function which prints a binary tree using post-order traversal (left, right, root) but I am experiencing some troubles. The code is compiled but when I run the program it crashes right before printing the post-order traversal.
Below you can find my code and the output from debugging.
Code: /** Program which represents a Binary Search Tree and is modified with the following functions: - smallest() - member function which searches for the smallest element in the tree. - preorder() - member function which prints the tree nodes using pre-order traversal - postorder() - member function which prints the tree nodes using post-order traversal (to be completed) */ #include <iostream> #include <cstdlib> #include <string> using namespace std; class TreeNode { public:
[code]...
This is from the debugger log:
Child process PID: 5720 At C:Program Files (x86)CodeBlocksProjectsTestmain.cpp:316 At C:Program Files (x86)CodeBlocksProjectsTestmain.cpp:317 At C:Program Files (x86)CodeBlocksProjectsTestmain.cpp:318 At C:Program Files (x86)CodeBlocksProjectsTestmain.cpp:319 Program received signal SIGSEGV, Segmentation fault. At C:Program Files (x86)CodeBlocksProjectsTestmain.cpp:279
For my data-structures class, I am attempting to create a binary search tree template to be used to create an AVL tree. I've written a Generic_Tree template for the BST to inherit from, and before I jump into implementing the AVL tree I'm testing the BST member functions. Everything was compiling fine until I added the BST insert() function. Now, I'm getting the following error message from my linker:
undefined reference to 'BST<void>::insert(int, void*)'
Create an a simple Payroll Management Application using the concept of Binary Tree. The program will allow you to add, sort, view, search record. The application have also the capability to save and retrieve data in a file.
It has been a while since I built a binary tree from scratch so I decided to do it. Everything works fine but this one function. When I enter a number to search it just keeps running and allowing me to keep enter numbers.
Code: void tree::search(int key,Node* leaf) { if (leaf == NULL) { std::cout<<"The tree is empty
I have a problem with the C code . I created two functions, one that runs through the tree inorder, the other that returns the maximum value in the tree. The problem is when I use in the main the method "max", which goes in a loop and not print anything on the screen . If I remove the call to method "max" it works fine. Here's the code:
Code:
#include<stdio.h> #include<stdlib.h> #define bool int /* A binary tree tNode has data, pointer to left child and a pointer to right child */ struct tNode {
I've almost got my code working. My issue is, if I type in either one of the first two id numbers, it finds the person and displays as it's supposed to, however if I type any of the last 6 id numbers it says id not found. I've been staring at this forever and can't see what I'm missing />/> ps, I haven't added in all my comments yet Binary tree template
//Binray tree template class #ifndef BINARYTREE_H #define BINARYTREE_H
I need to write a program to find the sum of depths of a binary tree, where a depth is by definition the shortest distance between a node and the root. I am required to code this using recursion.
I was thinking of first coding a helper recursion to find the depth for each node. What would be the best way to do that? If I could move from the node to the root, I believe programming this helper recursion would not be very difficult. Is there a way to progress from the node to the root?
I am having trouble with my deleteNode function, using recursion I am trying to delete a node from a binary tree. My tree is displayed as the following...
Tree: (node)->[left child, right child] (k)->[g,p] (g)->[c,h] (c)->[ ,e]
[Code]....
The result did show that it is erased but when I try to add the erase node "t" back into the tree it still exist. I am stumped on what to do when using recursion way of deleting node.
template <typename T> void insert(BTree<T>* tree, T item) { if (tree == nullptr) { tree = new BTree<T>(item); } else if (item < tree->val) { insert(tree->left, item); } else { insert(tree->right, item); } }
I think this function may not be working because I am modifying `tree`, which is a local variable. How do I actually modify the current pointer that `tree` represents, not just `nullptr`?
How to store values from a .txt file delimited with semicolons (;) into a class which is then stored into a Binary Search Tree. After browsing Google for a few hours, and trying various examples of people using Vectors, I just can't seem to get my program to work using Object Oriented Programming with an instance of the class Person.
My two classes are Person, and BinarySearchTree as follows:
class Person{ private: string first_surname; string second_surname; string name; int ID;
[Code] ....
Ok so my text file saves the data of each person in the same order as the class with each value separated by a semicolon.
i.e. First_Surname;Second_Surname;Name;ID;Telephone;Score;
void fillTree( BinarySearchTree *b) { string input[7]; Person p; fstream file("scores.txt", ios::in); // reads text file if(file.is_open()) {
[Code] ....
I understand that I get an error because a vector is saved as integers, and I am using strings, my question is, any other way to read the .txt file and save each data separated by a semicolon, into the Person class?
