cycle

问题 I'm trying to code a program that uses Electrical Mesh Analasys. So I have the nodes of the circuit [A,B,C,D] and the branches that links the nodes [0,1,2,3,4,5,6,7,8]. How can I find the shortest cycles in an undirected graph with multi edges like the example bellow? Graph image (4 nodes, 9 edges/branches): Cycles: 0-1-0 5-6-5 6-8-6 1-4-2-1 2-7-3-2 4-7-5-4 The number of cycles that I need are: Cycles = Branches - (Nodes - 1), in this case I need 6 cycles. I have this data stored in arrays

问题 Non-trivial native extensions will require per-interpreter data structures that are dynamically allocated. I am currently using Tcl_SetAssocData, with a key corresponding to the extension's name and an appropriate deletion routine, to prevent this memory from leaking away. However, Tcl_PkgProvideEx also allows one to record such information. This information can be retrieved by Tcl_PkgRequireEx. Associating the extension's data structures with its package seems more natural than in the "grab

问题 Been perusing all the other questions, and I can't figure this out. I have a home page that features certain slides from another page I have using the jquery cycle plugin. What I need to do is have the link on the home page link directly to a slide that isn't the first slide of a group. Nothing that complicated. I have a link like this on my home page: <a href='portfolio.php'>SEE MORE</a> I've looked into adding named anchors using the pagerAnchorBuilder and then referencing that anchor in my

问题 I have a huge DataTable, and I need go by each row and validate an specific value. Which method give me more performance, an structure of IF ELSE or SELECT CASE? (I'm focused in the method that offer me the best performance) IF ELSE (METHOD #1) For Each vRow In vDTtemp.Rows If vRow("Item") = "Time" Then vRow("Result") = "000" ElseIf vRow("Item") = "DateTime" Then vRow("Result") = "001" ElseIf vRow("Item") = "String" Then vRow("Result") = "002" Else vRow("Result") = "N/A" End If Next SELECT

问题 The other question on this only answered how to detect a cycle, not also output it. So, I'd like to write an algorithm run BFS or DFS in O(V + E) time (V=vertices, E=edges), on an undirected graph, and output the cycle if it has one. What I know so far is how BFS/DFS works and that you can detect a cycle using BFS if you visit a node that already has been marked as visited. 回答1: To detect and output a cycle with DFS, just mark each vertex as you get to it; if any child of the current vertex

问题 My problem should be pretty simple, given a graph (BGL adjacency_list) is there a simple algorithm to remove cycles? My first attempt was to use the DFS visitor to detect an edge that'd close the cycle and then remove it but I was unable to implement it correctly. Any suggestions? Code samples would be best. 回答1: Boost is great. It has a depth_first_search method that accepts a visitor. You can see more information about it here. All you need to do is implement a visitor like this: class

问题 So I am trying to implement the solution suggested to me in my previous question (SharePoint SOAP GetListItems VS jQuery - Need some advice on how to use Ajax to cycle through Custom List items as well as Ajax refresh the list contents). I want to use the Cycle library found here: http://malsup.com/jquery/cycle2/ to cycle through the contents of a DIV that I am populating with rows from a custom SharePoint list. The html I am creating appears to be valid, but when I try to run the cycle code

问题 First of all, I am new to this Xcode/Objective-C thing, so go easy on me! :) I made a test app that, by pressing some buttons, the background changes. I have a red, blue, green, white, black and revive button. I made the app change the color of the backgrnd by pressing all the color buttons. However, I want to make the app cycle through the colors, say 100 times very fast when pressing the Revive button. For some reason, it doesnt work. The following is the code that isn't working: Using the

问题 I have two classes as shown below in a bi-directional Many to Many relationship: Parent implements Serializable{ @ManytoMany(//declaration for join table) @JsonBackReference @com.fasterxml.jackson.annotation.JsonIgnore Set <Child> childSet; } Child implements Serializable{ @ManytoMany(//declaration for join table) @JsonManagedReference @com.fasterxml.jackson.annotation.JsonIgnore Set <Parent> parentSet; // other getter and setters } I make a call in my DAO to get a particular parent.

问题 I have used jQuery Cycle in numerous projects. This time round I am getting a really bizarre visual glitch. On page load, all the slides are shown on top of each other, then as the script cycles through each slide, it eventually fixes itself (until the page is reloaded). For the example and code click here. The image below shows the glitch which seems to be happening in all browsers (tested in Firefox 4, Safari 5, Chrome 10, IE8) Adding a background colour to each slide div does "fix" the