For reasons outside of my control I am trying to build a graph-like data structure in PostgreSQL. The business requirement is that everytime a node changes, its edges need to be re-computed. Also, there is the possibility of stale reads…
I was thinking on developing a function for age that returns a graph's adjacency matrix. An adjacency matrix stores the number of edges between two nodes. The complexity to check if an edge exists within an adjacency matrix is O(1),…
I'm trying to draw visual representation of sorting algorithms. Bubble Sort is working fine, but Selection Sort don't care about how much time I put in the setInterval timer, he runs on the same speed no matter what (until I…
There is a set of users. A person can have multiple users, but ref1 and ref2 might be alike and can therefore link users together. ref1 and ref2 does not overlap, one value in ref1 does not exist in ref2.…
I'm working on implementing a puzzle board game called Double-Choco published by Nikoli magazine Where the board is a 2-dimensional matrix with cells that are either white or gray. The goal is to divide the grid into blocks by drawing…
A graph is bipartite if and only if it is 2-colorable. Again A graph is bipartite if and only if every edge belongs to an odd number of bonds, minimal subsets of edges whose removal increases the number of components…
I was making a graph for a recommendation system and added vertices for users, categories and products and edges to represent the connections between them. One product may have connections to categories and a rating as a property for them.…
The program goal is to traverse through various airports and output the shortest path between PHX and BKK using Breadth First Search algorithm. However, I am facing difficulty in printing the result. The expected output (shortest path) is: PHX ->…
I am trying to install the age-viewer from GitHub by following these steps: Cloning the repository Changing directory to age-viewer Running "npm run setup" However, I am encountering issues with missing packages and 34 vulnerabilities (3 moderate, 22 high, 9…
I've been stuck on this SQL query for a day now, so I'm throwing it up here and would appreciate any advice others can give. This is the problem: I want to generate a set of pairs of tags (named…