traversal

问题 I have a problem to find all possible paths. a a a b b a a a a b b a Traveling from starting point at 0,0 to end point at 2,3. I need to get all possible paths. Possible moves that I can do are moving down and moving right . Let me tell you where I am stuck. I am trying to do with a recursive function . Starting with point at 0,0 and moving towards right whenever I can and moving down only when I must. My recursive function : public static move(int i,int j) { if(possible(x,y+1)) { move(x,y+1)

问题 I have a table that contains multiple rows. Each row contains 5 columns (or 5 TDs). Inside of the first TD is a text field and a select box. The 4 other TDs each contain a table that contains a set of radio buttons. <tr bgcolor=#ffffff> <td valign=center> <select name=player1> <option>0</option> <option>1</option> </select> <input type="text" id="PlayerLocal1" name=p1name size=20> </td> <td> <table border=1> <tr> <td> <table border=0 cellspacing=0 cellpadding=0> <tr> <td><input type=radio

问题 I have a form with a bunch of text elements, some of which have a data attribute set. I want to loop through all the elements that have that attribute, extracting the attribute. I've created a fiddle here. var textInputs = $(':text'); alert('found ' + textInputs.length + ' textInputs'); var datas = textInputs.find('[data-foo]'); alert('found ' + datas.length + ' datas'); I'm finding the text elements, but my selector on the data attribute is returning no elements. Ideas would be helpful...

问题 I'm pretty much a beginner in programming, currently trying to build my first web scraper using JSoup. So far I am able to get the data that I want from a single page of my target site, but naturally I would like to somehow iterate over the entire site. JSoup seems to offer some kind of traversor/visitor (what's the difference?) for that, yet I have absolutely no idea how to make that work. I know what trees and nodes are and know the structure of my target site, but I don't know how to

问题 $(this).closest(".fieldfilters"); This returns nothing for me. The HTML structure is like this: <div class="fieldfilters" > <div class="filtri_ul_list"> <ul> <li> <a></a></li> </ul> </div> </div> $(this) is the <a> . As far as I understand closest traverses the DOM up and finds the closest match. Is there a problem with the selector being a class? Why doesn't this work? 回答1: Your usage of .closest() is perfectly fine. $(this).closest(".fieldfilters"); The most probable cause of your problem

问题 I'd like to traverse my graph using the neo4j traversal API, but I need to be able to specify which relationship type to use at every step, and the relationship type to use needs to be a function of the current node. Is there a way to do this? 回答1: in the current Traverser API you can't choose the exact relationship to traverse. Instead, you take the more granular approach of node.getRelationships(), chose the one you want and the end onde on it, and so on. The algo gets a bit more verbose

问题 I have written Perl code to actually create a Trie datastructure given a set of words in an array. Now I have problems traversing and printing the words. Also pasted the Dumper output of the Datastructure created. The final set of words after traversal doesn't seem to be right since the traversal logic is certainly missing something. But the trie creation is fine and works fast. Can someone help me here? The top level of the trie is a hash Each hash item has a key which is a letter and each

问题 I'm working on a simple assignment for a summer java course and was just hoping you guys could take a look at my code and see if the way I did it is the best way. The purpose is to create a simple int array with at least 25 elements and use a loop to traverse it and add up all the elements. I had some issues but looks like I got it to work. After I work it out I did a little research and saw some similar stuff where people were using a For Each loop (enhanced loop). Would that be a better

问题 I'm working on a project for my A level. It involves finding the maximum flow of a network, and I'm using javascript. I have a 2D array, with values in the array representing a distance between the two points. An example of the array: 0 2 2 0 0 0 1 2 0 0 0 2 0 0 0 0 I think I need to use a recursive technique to find a path; below is some pseudocode, assuming that the array is 4x4. a is (0,0), b is (3,3). function search(a,b) from a to b if element(i,j) != 0 then store value of element search

问题 I am currently building some code that traverses through directorys listing all files and paths and file sizes. I am now stuck with the final part of the traverse process which is the if statement to make the code go into any encountered directories. do { char *filename = entry->d_name; stat(filename,&buffer); if (S_ISDIR(buffer.st_mode)) { name = entry->d_name; chdir(name); if (strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0) continue; listdir(name); //THIS IS THE NAME OF