Binary Tree Algorithms: Bottom-Left Value, Path Sum Variants, and Tree Construction from Traversals
Finding the Bottom-Left Node Value
Given the root of a binary tree, return the value of the leftmost node at the deepest level.
Breadth-First Search (Iterative)
A level-order traversal naturally visits nodes layer by layer. The first node encountered in the final level is the answer.
#include <queue>
int findBottomLeftValue(TreeNode* roo ...
Posted on Sat, 13 Jun 2026 17:35:17 +0000 by eideticmnemonic
Binary Tree Construction and Traversal Algorithms in C
Binary Tree Implementation with Extended Preorder Input
This C program constructs a binary tree from an extended preorder sequence where missing children are marked with asterisks. It outputs postorder and inorder traversals and counts nodes with two children.
#include <stdio.h>
#include <stdlib.h>
typedef struct TreeNode {
cha ...
Posted on Wed, 10 Jun 2026 17:39:42 +0000 by Anco