Detecting Universal Sink in Directed Graphs Using Adjacency Matrix
A universal sink in a directed graph is a vertex with in-degree |V|-1 and out-degree 0. Given an adjacency matrix representation, we can determine the existence of such a vertex in O(V) time by simultaneously traversing rows and columns.
func findUniversalSink(matrix [][]int) int {
n := len(matrix)
candidate := 0
for i := 0; i ...
Posted on Tue, 15 Sep 2026 16:48:50 +0000 by jjk2
Understanding Graph Data Structures: Adjacency Matrix and Adjacency List Representations
A graph is a data structure consisting of a set of vertices (nodes) and a set of edges that define the relationships between these vertices. Mathematically, a graph G is represented as G = (V, E), where:
V is a finite, non-empty set of vertices.
E is a finite set of relationships between vertices. For an undirected graph, an edge is represente ...
Posted on Wed, 02 Sep 2026 16:46:28 +0000 by GoodCoffee