traversal

问题 I have an object that is dynamically created. Here's a simple example: global.data { children: [ 0: { children: [ 0: { children: value } ] } ] } What I want to do is check if the object (global.data) has a property of 'children', grab properties from it, and send that object ('children') back through the loop to see if it has a property of 'children' of it's own. I want it to keep going until there are no more 'children' left to traverse though. 回答1: Run a while loop till it reaches to

问题 I have a XML like this - <DOCUMENT> <SERVICE> <ID>1338</ID> <NAME> <EN>this is an english name</EN> <DE>this is a german name</DE> </NAME> </SERVICE> </DOCUMENT> As you can see the elements inside the name tag are XML like but not really formatted as elements. The output XML needs to look like <SERVICES> <SERVICE ID="1338" EN="this is an english name" DE="this is a german name"/> </SERVICES> I am trying to get the value of the EN and DE through XPATH. I have tried to playaround with disable

问题 Let's say we have a fully connected directed graph G . The vertices are [a,b,c] . There are edges in both directions between each vertex. Given a starting vertex a , I would like to traverse the graph in all directions and save the path only when I hit a vertex which is already in the path. So, the function full_paths(a,G) should return: - [{a,b}, {b,c}, {c,d}] - [{a,b}, {b,d}, {d,c}] - [{a,c}, {c,b}, {b,d}] - [{a,c}, {c,d}, {d,b}] - [{a,d}, {d,c}, {c,b}] - [{a,d}, {d,b}, {b,c}] I do not need

问题 Is there a way to recursively traverse a tree and return an array that is scoped to that recursive method? So I recently answered someone else's question on this topic. That question can be found here: SO Question. My solution uses an array outside of the scope of the recursion, and therefore the method cannot (or at least probably should not) return the array. However, is there a way to write a recursive method for traversing trees such that it returns an array? Even writing an initial

问题 I have a problem whit EWS ( Exchange Webservice ) I send an request for FindFolders <?xml version="1.0"?> <soap12:Envelope xmlns:soap12="http://schemas.xmlsoap.org/soap/envelope" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENC="http://www.w3.org/2003/05/soap-encoding" xmlns:M="http://schemas.microsoft.com/exchange/services/2006/messages" soap12:encodingStyle="http://www.w3.org/2003/05/soap-encoding" xmlns:T="http://schemas

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I'm not sure how I'm going to attack the traversing of my Huffman Tree. The tree is correct, I just have a hard time figuring out how to traverse it in a good way. For some reason, my traversing method gives no result... UPDATE: Cleaned up the code, made it more Object Oriented Node class: public class Node {

问题 What I want to do is to traverse the node in order, so that I can print the node in binary tree in order. void inorder_traverse(node* root, function<void(node*)> visit) { if (root == nullptr) return; cout << root->data << ", "; inorder_traverse(root->left, visit); visit(root); inorder_traverse(root->right, visit); } I saw this code for inorder traversing a binary tree. Traversing goes all the nodes so I thought I could print all the data of all visited nodes using traversing function. Would

问题 I want to be able to hide/disable the prev link when I am at the first box and disable the next link at the last box because at the moment you can keep clicking on next at the last box and when you do this it breaks as clicking previous no longer works. see demo in fiddle <span id="wrapper"> <span id="prev"><a href="#">Go to Prev</a></span> <span id="content"> <div class="box">1</div> <div class="box">2</div> <div class="box">3</div> <div class="box">4</div> <div class="box">5</div> <div id=

问题 I am having some trouble understanding how A* search could be applied to a robot traversing a maze in real time . I understand how A* works but only in "pre-computed" sense (i.e. if you were to work out the whole path before attempting to traverse the maze). How would you use it to give an answer to "where to next" at every step of the maze? Or am I missing something? Thanks a lot! 回答1: Generally the robot will map out the maze as best it can, then run the pathfinding algorithm and follow the

问题 So I have a pyramid traversal app and I'd like to be able to PUT to URIs that don't exist. Is there a way to do this in the view config? So for example I have this @view_defaults(context=models.Groups, renderer='json') @view_config(request_method='GET') class GroupsView(object): def __call__(self): ''' This URI corresponds to GET /groups ''' pass @view_config(request_method='PUT') def put(self): ''' This URI should correspond to PUT /groups/doesnotexist ''' pass Of course the put doesn't work