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by: Paul Moore |
last post by:
I'm trying to check a graph (represented in the usual Python adjacency
list format) for loops. This is dead simple - you use a depth-first
search, and look out for "back edges" (edges from a vertex "back" to
one you've already seen).
I already have a DFS algorithm which generates each edge in turn. It's
great for what it does, but it ignores back edges.
def DFS(graph, start, seen = None):
if not seen:
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by: Magnus Lie Hetland |
last post by:
Is there any interest in a (hypothetical) standard graph API (with
'graph' meaning a network, consisting of nodes and edges)? Yes, we
have the standard ways of implementing graphs through (e.g.) dicts
mapping nodes to neighbor-sets, but if one wants a graph that's
implemented in some other way, this may not be the most convenient (or
abstract) interface to emulate. It might be nice to have the kind of
polymorphic freedom that one has with,...
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by: SubNeo |
last post by:
hello
i have a problem - i need an algorithm which computes the minimum
number of disjoint path in a labirynth.
but i think that using a graph to do it is a good idea, but all i've
found is that F.T. Boesch had written "Covering the points of a graph
with point-disjoint paths..." in 1974. or something like that.
i couldn't find that article in Internet (at least a free one)
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by: sasha.mal |
last post by:
Hello everybody!
Could anyone help with a practical graph isomorphism algorithm, coded
in C++ (C would also do), to work with genus bounded graphs of a
bounded degree.
Currently, any algorithm to work with planar graphs with degree bounded
by 4 (on a quadratic grid) would also help.
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by: Jef Driesen |
last post by:
I'm working on an image segmentation algorithm. An essential part of the
algorithm is a graph to keep track of the connectivity between regions.
At the moment I have a working implementation, but it's not flexible
enough anymore and I need something more advanced. I already have a data
structure in mind, but I don't know how to implement that nicely in C++.
// Main class which holds the lists with
// edges and vertices. These lists are...
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by: Amol |
last post by:
I am working on an interesting graph optimization problem and I would
like to have a few expert opinions for helping me with a solution.
So here goes ...
I have a black box with a complex internal circuitry that is
represented in the form of a graph. I have to abstract the graph by
reducing the number of internal points and constructing cumulative
paths from each input to every possible output in case a path exists (a
series...
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by: Shuch |
last post by:
Hi all,
I am in shortage of time...and i want to know if someone has a code
written in c++ or c for finding the shortest path using stack or
queue??????my specifications r as follow:
Input data:
n = integer number representing the number of vertices
k = small integer number representing the maximal vertex degree
G = unoriented labeled connected graph G with n vertices and maximal
degree k
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by: sriniwas |
last post by:
Hi Frnd's,
m using prefuse visulation,it's have one display class and this class have one saveImage(outPutStream, String jpg,double size);. now graph is converting ia jpg image properly.now my problem is tht,If graph is to large if it going out of screen thn ,i m getting jpg image on screen disply graph,m not getting the image of tht graph which going out of screen. this is my code
This is my code
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by: Glenton |
last post by:
Hi All
Here is a very simple little class for finding a shortest route on a network, following Dijkstra's Algorithm:
#!/usr/bin/env python
#This is meant to solve a maze with Dijkstra's algorithm
from numpy import inf
from copy import copy
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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