Freaks City

Problem Overview Continuing with binary tree traversal problems. This is problem 513: Find the value of the bottom-left node in a binary tree. Problem Statement Given the root of a binary tree, return the value of the bottommost-leftmost node in the tree. The tree has at least one node. Example 1: Input: root = [2, 1, 3] Output: 1 Example 2: I ...

Binary Tree Node Definition public class BinNode { int data; BinNode leftChild; BinNode rightChild; BinNode() {} BinNode(int data) { this.data = data; } BinNode(int data, BinNode leftChild, BinNode rightChild) { this.data = data; this.leftChild = leftChild; this.rightChild = rightCh ...

Maximum Depth of a Binary Tree The maximum depth of a binary tree is defined as the number of nodes along the longest path from the root node down to the farthest leaf node. A leaf node is a node that has no children. This problem can be solved using either a recursive depth-first search approach or an iterative breadth-first search approach. R ...

Extracting Nodes at a Specific Depth in a Complete Binary Tree When processing a copmlete binary tree with sequentially provided nodes, an array-based representation provides direct mathematical access to child indices. By enforcing 1-based indexing, the left descendant of any element at position i is located at 2 * i, and the right descendant ...

Understanding Search Paradigms When approaching algorithmic challenges involving traversal, two primary methods dominate: Depth-First Search (DFS) and Breadth-First Search (BFS). While both traverse nodes in a graph or tree, their utility differs based on the problem constraints. BFS is fundamentally tied to the concept of shortest paths in unw ...

Water Flow Simulation Siumlate water flow using two visited matriecs for tracking. Depth-First Search Implementation package main import "fmt" var dirs = [][]int{{1, 0}, {-1, 0}, {0, 1}, {0, -1}} func main() { var rows, cols int fmt.Scanln(&rows, &cols) grid := make([][]int, rows) vis1 := make([][]bool, ...

Directed Acyclic Graphs (DAG)A Directed Acyclic Graph (DAG) is a directed graph containing no cycles. If a directed graph contains a cycle, no topological ordering exists. For a valid DAG, multiple valid topological orderings may be possible.For any vertex in a directed graph, the count of incoming edges is called in-degree, and the count of ou ...