Is it necessary for vertex labels to be distinct within a graph?

I am currently developing a browser-based application that allows users to create graphs, manipulate them, and run algorithms on them. At the moment, each vertex is represented by a unique positive integer. However, I am considering implementing labeled vertices, where the label can be any string. This presents a dilemma as to whether duplicate labels should be allowed and how they should be stored. Several options are being considered:

  1. Maintain integer vertex ids and enforce unique labels. This may lead to confusion between labels and vertex ids, particularly with JavaScript automatically converting numbers to strings.
  2. Stick with integer vertex ids but permit duplicate labels. While this offers more flexibility, it could also result in user confusion.
  3. Do away with numeric vertex ids entirely and identify vertices solely by their unique labels. But elevating something that seems like a property to an identifier doesn't feel quite right.
  4. Explore alternative approaches?

After researching various graph libraries, I've noticed that each has its own method for dealing with this issue. I understand that there may not be a definitive answer to my question, so I welcome opinions and insights. Thank you in advance!

javascripttypescriptgraph-theorygraph-databases

Answer №2

In order to maintain a graph with unique node values, we can implement an adjacent list where each node value is assigned a unique ID generated by the hash value of the previous node. Deleting a new node may incur some cost as it requires recalculating the hash.

For example:
Let count = 1
class HashValue
{
   getUniqueNodeGenerator();
}
---------------------------------------------------------------------------------------------------------------------------------------
Whenever a new node is created, the hash value is calculated from existing values to compute the new hash value.
UniqueID: Hash value calculated by (1 and String Name)
UniqueID: Hash value calculated by Hash Value Of Node 1 and New Node
UniqueID: Hash value calculated by Hash Value Of Node 2 and New Node
UniqueID: Hash value calculated by Hash Value Of Node 3 and New Node
UniqueID: Hash value calculated by Hash Value Of Node 4 and New Node
UniqueID: Hash value calculated by Hash Value Of Node 5 and New Node    
------------------------------------------------------------------------------
Label Here 
string getUniqueNode()
{
    calculate unique node
}
struct user
{
   string name;
   string UniqueID;
}
class graph
{
    int numvertices;
    list<user> *adjLists;
    bool *visited ;
public:
    graph(int V);
    void addEdge(int src,int dest);
    void DFS(int vertex);
};

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Parsing JSON data using a regular expression

Within my JavaScript file lies a plethora of object literals: // lots of irrelevant code oneParticularFunction({ key1: "string value", key2: 12345, key3: "strings which may contain ({ arbitrary characters })" }); // more irrelevant code My ta ...

javascriptpythonjsonregex

Discover a JavaScript table using a for loop

Currently, I'm in the process of setting up a search bar within a table that has been populated by looping data retrieved from an API. My goal is to allow users to search for specific entries either by name or email. Unfortunately, I seem to be encoun ...

javascriptajaxfor-loophtml-tablesearch-box

Arrangement of watch attachment and $timeout binding

I recently encountered a component code that sets the HTML content using $scope.htmlContent = $sce.trustAsHtml(content). Subsequently, it calls a function within a $timeout to search for an element inside that content using $element.find('.stuff' ...

javascriptangularjs

Conceal the countdown clock and reveal the message box

I am attempting to create a functionality where the text box will replace the timer when it reaches 0, and then the timer will be hidden. I am seeking a straightforward solution using either the 'v-show' or 'destroy' property in vue.js ...

javascripthtmlcssvue.jsvuetify.js

React canvas losing its WebGL context

What is the best practice for implementing a webglcontextlost event handler for React canvas components? class CanvasComponent extends React.Component { componentDidMount() { const canvasDOMNode = this.refs.canvas.getDOMNode(); DrawMod ...

canvasreactjstypescriptwebgl

Tips for retrieving data sent through Nextjs Api routing

Here is the API file I have created : import type { NextApiRequest, NextApiResponse } from 'next/types' import { PrismaClient } from '@prisma/client' const prisma = new PrismaClient() export default async function handler(req: NextApi ...

reactjstypescriptnext.js

The Console.log() function displays the current state and value of a promise object within the Q library

Whenever I attempt to print a promise object from Q, the result that I receive is as follows: var Q = require('q'); var defaultPromise = new Q(); console.log('defaultPromise', defaultPromise); defaultPromise { state: 'fulfilled& ...

javascriptnode.jspromiseq

Guide to building a hierarchical data object with JavaScript

Prior This object consists of multiple rows: { "functions": [ { "package_id": "2", "module_id": "2", "data_id": "2" }, { "package_id": ...

javascriptjsonangular-cli

What could be causing the strange output from my filtered Object.values() function?

In my Vue3 component, I created a feature to showcase data using chips. The input is an Object with keys as indexes and values containing the element to be displayed. Here is the complete code documentation: <template> <div class="row" ...

javascripttypescriptvue.jsvuejs3

In TypeScript, the choice between using `private readonly` within a class and

I have been contemplating the best method and potential impacts of referencing constants from outside a class within the same file. The issue arose when I was creating a basic class that would throw an error if an invalid parameter was passed: export cla ...

javascripttypescriptclassecmascript-6constructor

Transferring data from a child to a parent component in Angular 2 using a combination of reactive and template-driven approaches

Recently delving into Angular 2 ( and Angular overall ) , I found myself at a crossroads with my co-worker. He opted for the template-driven method while I leaned towards the reactive-driven approach. We both built components, with his being a search produ ...

angulartypescriptangularjs-directiveangularjs-scopecomponents

"Upon refresh, the overflow property of the child element is being applied to the window position

In the React app I'm working on, there's a search results page where users can apply filters. These filter selections update the query params in the URL and trigger a re-mount in React. However, I've encountered an issue across different bro ...

javascripthtmlcssreactjs

Attempting to generate a nested array structure in order to produce a JSON object for output

I am currently working on a JavaScript script that interacts with the Netsuite ERP platform to retrieve data. Currently, the script is returning data in an array format, specifically product information. While this is functional, I would prefer it to retu ...

javascriptarraysjsonloopsstringify

Sending a PHP variable to a modal using jQuery Ajax

I've encountered an issue with my jQuery ajax script. I'm struggling to pass a variable to the modal despite spending all weekend trying to debug it. Here is the link used to call the modal and the ID I want to pass: echo '<img src="./i ...

javascriptphpjqueryajax

What is the best way to keep a button visible at all times and active without needing to be clicked?

<v-card :style="{ textAlign: 'left' }" class="basic-card pa-6" :class="{ 'small-padding': !$vuetify.breakpoint.xl }" elevation="0" flat :height="windowHeight - 104 + 'px&ap ...

javascripthtmlvue.jsvue-componentvuetify.js

"Encountering an Error with Route.get() when attempting to utilize an imported

I have a function that I exported in index.js and I want to use it in test.js. However, when I try to run node test, I encounter the following error message: Error: Route.get() requires a callback function but got a [object Undefined] What am I doing wro ...

javascriptnode.jsexpress

Using JavaScript to fetch elements by their ID along with a button

UPDATE: I have corrected the semi-colons, case sensitivity, and brackets in the code. It functions properly if I eliminate the functions after buttonPARTICULAR! Why is that? UPDATE: Issue resolved. My mistake. Apologies!!! :-Z When I simplify it like thi ...

javascriptdom-events

To effectively execute a JQuery / Javascript function, it is essential to incorporate both $(document).ready and $(document).ajaxSucces

I have a JavaScript function that is used for basic UI functionality across my site. Some elements affected by this function are injected via Ajax, while others are static HTML. Currently, I have duplicated the function and applied it to both $(document). ...

javascriptjqueryajax

The parameter type must be a string, but the argument can be a string, an array of strings, a ParsedQs object, or an array of ParsedQs objects

Still learning when it comes to handling errors. I encountered a (Type 'undefined' is not assignable to type 'string') error in my code Update: I added the entire page of code for better understanding of the issue. type AuthClient = C ...

node.jsstringtypescriptfirebase

Caution: Make sure to assign an object to a variable before exporting it as the default module

While working with react-redux, my root Reducer appears like this: import Customers from "./customers/reducer"; export default { Customers }; Recently, I encountered a warning saying: Assign object to a variable before exporting as module def ...

javascriptreactjsredux