I was going though problems on graph theory posted by Prof. Ericksson from my alma-mater and came across this rather unique question about pigeons and their innate tendency to form pecking orders. The question goes as follows: Whenever groups of pigeons gather, they instinctively establish a pecking order. For any pair of pigeons...
I am calling the results form a query to a list on my site based on if the item is "downtown_hosted". This works fine but I would now like to sort that list DESC, but can't seem to get the syntax correct. Below is what I have: $result_events = mysql_query("SELECT * FROM events WHERE downtown='downtown_...
I've found myself running back through some old 3.5 framework legacy code, and found some points where there are a whole bunch of lists and dictionaries that must be updated in a synchronized fashion. I've determined that I can make this process infinitely easier to both utilize and understand by converging these into custom container cl...
Hi, the program gives following exception: Exception in thread "main" java.lang.NullPointerException at myclasses.BubbleSort.run(BubbleSort.java:42) at acm.program.Program.runHook(Program.java:1519) at acm.program.Program.startRun(Program.java:1508) at acm.program.Program.start(Program.java:729) at myclasses.BubbleS...
I have a table defined like this: Column: Version Message Type: varchar(20) varchar(100) ---------------------------------- Row 1: 2.2.6 Message 1 Row 2: 2.2.7 Message 2 Row 3: 2.2.12 Message 3 Row 4: 2.3.9 Message 4 Row 5: 2.3.15 Message 5 I want to write a T-Sql query that will get ...
Let's say I run an ActiveRecord query and it returns 3 results, with a bunch of attributes. I want to add 3 attributes to each record in the Array so I can do sorting at a code-level. These 3 include: num_comments, num_views, last_view. How do I add these attributes? How do I then sort the records, in order of precendence, by num_comm...
I am trying to override Ruby's <=> (spaceship) operator to sort apples and oranges so that apples come first sorted by weight, and oranges second, sorted by sweetness. Like so: module Fruity attr_accessor :weight, :sweetness def <=>(other) # use Array#<=> to compare the attributes [self.weight, self.sweetness] <=> [other.we...
How can i sort myScriptCellsCount.MyCellsCharactersCount (list int type) in linq public class MyExcelSheetsCells { public List<int> MyCellsCharactersCount { get; set; } public MyExcelSheetsCells() { MyCellsCharactersCount = new List<int>(); } } void ArrangedDataList(DataTabl...
I have the following list IEnumerable<Car> cars The Car object has a model and a year. I want to sort this list by model and then year (within model) what is the best way of doing this ? ...
Is there an algorithm to split a sequence of random numbers into two groups based on a median value determined on the fly(without sorting them)? Ex. If I have the sequence 2-3-6-7-1-4-5, the result would be two separated groups: A) 1 2 3 B) 5 6 7 Median value: 4 ...
I'm looking for an efficient way to calculate the rank vector of a list in Python, similar to R's rank function. In a simple list with no ties between the elements, element i of the rank vector of a list l should be x if and only if l[i] is the x-th element in the sorted list. This is simple so far, the following code snippet does the tr...
I am trying to sort the search results of a thinking_sphinx search. The columns I want to sort are in associated tables: class Membership < ActiveRecord::Base define_index do indexes :title indexes user.first_name, :as => :first_name indexes user.last_name, :as => :last_name has :organization_id, :active set_property...
I would like to know the best way to sort a long list of strings wrt the time and space efficiency. I prefer time efficiency over space efficiency. The strings can be numeric, alpha, alphanumeric etc. I am not interested in the sort behavior like alphanumeric sort v/s alphabetic sort just the sort itself. Some ways below that I can t...
Possible Duplicate: How to sort a Map<Key, Value> on the values in Java? I have a HashMap of the type: HashMap<String, Integer> h = new HashMap<String, Integer>(); The HashMap contains a list of Strings and the Integer is a counter for the number of times that String has been found. What I would like to be able to do is sor...
dear all, i am implementing a tableviewer that is able to sort values depengin on their column order. e.g. column1-column2-columnX sorts the rows first on the values of column 1, then column 2, column.... Therefore i want to use a ColumnViewerSorter, especially the method "int doCompare(Viewer viewer, Object e1, Object e2);" inside t...
Hi friends, I'm a drupal newbie... I have created a block with View Module to list events (title, event date) at homepage. dates are being entered into textbox and such format as below; December 5-7, 2010 December 4-6, 2011 July 17-19, 2011 ... When I set Sort Criteria as date, it just mess :/ it doesn't sort chron...
Hi, So I wanna sort an array of Points using the built in sorting method, by a specific coordinate, say x. How can I do this? Heres a sample code: Point A[] = new Point[10]; // ... Initialize etc. Arrays.sort(A, x-coordinate); Is there a built-in comparator for x-coordinates in Point Class? If not, how can I create one and use it. An...
Is there any special parameter that i can pass to search url to sort it by date . And is there any parameter to increase the number of search results returned ? Thanks ...
I'm trying to query a Wordpress database and get the post titles to sort in a correct order. The titles are formatted like this: Title 1, Title 2.. I need to sort them in ascending order, how can I do this? If I just sort them ascending they will come out like: 1,10,11... Right now my order by statement is this but it does nothing: ORD...
Write a static method in Java : public static void sortByFour (int[] arr) That receives as a paramater an array full of non-negative numbers (zero or positive) and sorts the array in the following way : In the beginning of the array all the numbers that devide by four without a remainder will appear. After them all the numbers in th...