## Insert in a binary tree (not BST) Python

I'm trying to insert a node in my binary tree. However, I don't know the proper way to do this. I understand that I should run a bfs and insert in the first null position. How do I translate that into a code? I was trying with DFS: The tree looks lik

## Binary tree, returns the parent of the node

I try to write a function which return the parent of the value node.The createAB function works,but i don't know to iterate the binary tree elements.How to make recursively call?.Please help me. ifstream f("store.txt");//store.txt:10 7 8 0 0 0 1

## Find and return a node in the Java binary tree

Hi I'm trying to find a node equal to a string given by parametres and return that node. My structure is a binary tree of strings. We assume that the string searched exists. The var q is inicializated to the root of the tree. (in the function I calle

## The lowest common ancestor of a binary search tree code does not pass

can anyone help me with this code? I cannot figure out where I'm blocked. Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. TreeNode* lowestCommonAncestor(TreeNode* root, TreeNode* p, TreeNode* q)

## How to count the total number of nodes in a binary tree

I need to count the total number of nodes in binary tree. The problem now arise when I execute this code, it's giving garbage value for total number of nodes. The output of my program is like 993814. which should be 7. How to fix this problem? #inclu

## Sum of the subset using recursion

My Input is: W[10] = {1, 3, 5, 7, 9, 12, 19, 22, 36, 63} X[10] = {0}; M = 79; I called the function by: findSolution(0,0,177); <br> Note: 177 is sum of all the elements inside W array. void findSolution(int s, int k, int r) { cout << "fn(

## Sub-matrices divisible by three on a beach in a segment tree

I have an array consist of decimal digits. Basically, I have to query that in a given range, how many continuous sub-arrays when considered as a decimal number gets divisible by 3. I am using the basic fact that number is divisible by 3 if sum of its

## Binary Tree Idiomatic Traversal (Maybe All Tree)

A Doubly Linked List enables idiomatic traversal of a Linked List and I thought why not for a Binary Tree? Traditionally, Binary Trees or Trees ingeneral are unidirectional and that implies, given a large tree with sufficient number of nodes, the run

## How to apply SQL LIMIT for three structure data?

I use a famous method for showing the three comment from SQL. How I can display only first three root comment with a all sub-comment? I tried to make something like: SELECT * FROM NAMES ORDER BY pid LIMIT 3 ASC, Id ASC LIMIT 3 But LIMIT is not suppor

## Is there a way to avoid copying the entire search path of a binary tree to the insert?

I've just started working my way through Okasaki's Purely Functional Data Structures, but have been doing things in Haskell rather than Standard ML. However, I've come across an early exercise (2.5) that's left me a bit stumped on how to do things in

## This recursive method to cross a binary tree crashes after a few recursions! Why?

This is my class Node and Traverse is a method to visit an Huffman binary tree and save the codes of the characters of a .txt file. Codes is a vector of string where I save the codes. Temp is the temporary string where I save the character's code to

## Haskell: version of the recursion of the tail of the depth of the binary tree

First of all I have two different implementation that I believe are correct, and have profiled them and thinking they are about of the same performance: depth::Tree a -> Int depth Empty = 0 depth (Branch b l r) = 1 + max (depth l) (depth r) depthTail

## Recursive width traversal of the binary tree

I'm trying to find a way to realize binary tree traversal using recursion in C or C++ language. I can implement breath-first traversal (reading each level) with iterative algorithm using queue or smth. else, but i need an algo to do this with recursi

## BST with duplicates

I know that, BST does not allow duplicates. For example, if I have a word "RABSAB". The Binary search tree for the above string is: R /\ A S \ B What if we wanted to include the duplicates in the tree. How the tree gonna change? I was asked this

## Create a doubleTree () of a binary search tree?

I came across a problem stating For each node in a binary search tree, create a new duplicate node, and insert the duplicate as the left child of the original node. The resulting tree should still be a binary search tree. http://cslibrary.stanford.ed

## Find the sum of node height in a binary tree recursively

How to find sum of node's height in a binary tree recursively? Example: public int totalHeight() { return totalHeight(root); } private int totalHeight(BinaryNode<AnyType> n) { int totalHeight = 0; if (n.left == null && n.right == null) retur

## Binary search trees and data with Python

I have a binary tree function with 3 pieces of data in each node. They are classified by id numbers. They also hold "Name" and "Mark" A certain function I'm having problem with is a name searching function, it looks like this: def find

## I have trouble creating a method to scan a whole binary tree, can you help me? (Need help)

import java.io.*; import java.util.*; import javax.swing.JOptionPane; //////////////////////////////////////////////////////////////// class Node { public char iData; // data item (key) public Node leftChild; // this node's left child public Node rig

## JAVA: Problems Creating a Binary Tree

Ok, here is my code. I am trying to practice with Binary Trees. Why can't my size() method access the root node of my binary tree? Also my root.left, and root.right assignments do not work. import java.awt.*; import java.awt.event.ActionEvent; import

## The isEmpty method for a binary tree problem

I am trying to write myself the isEmpty method for a binary tree but I am having a problem. So this is the method that I am using. public boolean isEmpty(){ if(root == null) return true; else return false; } When I add only one element, and then remo

## Insert in the binary tree without input sort

how can you build binary tree without sorting it, I.E if i have a input 5 4 9 8 1 2 7 how can you insert that into a reference based binary tree. I know this can be easily implemented with Array, but is it possible with reference base? Tree buildTree

## Code a nice basic printer for trees in Java

I need help in understanding how to code a pretty printer for any given binary tree. I know the first step is to do preorder to get all of the nodes. I know that during the preorder traversal, that's where all of the prettyness will be implemented. J

## Given a binary search tree and a number, find a path whose node data was added to be the given number.

Given a binary search tree and a number, find if there is a path from root to a leaf such that all numbers on the path added up to be the given number. I know how to do it by recursively. But, I prefer an iterative solution. If we iterate from root t

## Implementing a balanced binary search tree?

I have implemented a binary search tree and I want to add more functionality in its insertion function to make it a self-balancing tree. I am coding in C#. Can anybody please suggest me good tutorials or links on this? I did some searches and found s

## Cross a binary tree in Python

I am almost finished with a project that has us creating a dictionary class that utilizes a binary tree structure. I am however stuck on how to implement a method that prints out all the elements in the tree, I just don't have much experience with bi

## Find a binary tree and print valuable children

So I have spent many sleepless nights the last two weeks trying to work on what I thought would be a simple program: I am trying to create a Binary Tree from a list of integers in a specific file. The numbers are inserted into a binary tree. I then p

## Crossing order of level of a binary tree

void traverse(Node* root) { queue<Node*> q; Node* temp_node= root; while(temp_node) { cout<<temp_node->value<<endl; if(temp_node->left) q.push(temp_node->left); if(temp_node->right) q.push(temp_node->right); if(!q.empty())

## How to create a c / c ++ tree script?

How to create a script to : compare two trees, in c/c++ in a non recursive mode? also, How to create a script in c/c++ to verify if a tree is binary, in a non recursive mode? thanks in advance.First of all, in C/C++ you don't write scripts. you write

## Efficient berry storage for the binary tree

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

## List implemented using an inorder binary tree

For the new computer science assignment we are to implement a list/array using an inorder binary tree. I would just like a suggestion rather than a solution. The idea is having a binary tree that has its nodes accessible via indexes, e.g. t = ListTre