sort

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I'm looking for an algorithm, which could perform better, than Arrays.sort() . I know this will look like a silly question asked million times, but please read on. Let's have two classes implementing Comparable whose natural ordering is based on an int value. The first compareTo method looks like this: public int compareTo ( ComparableInteger o ) { return this . value - o . value ; } The second is this: public int compareTo ( ComparableInteger o ) { if ( this . value > o . value ) { return 1 ; } else { if ( this . value == o .

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'd like to have list of object sorted with property 'sort_1'. But when I want to remove I'd like it to use property 'id'. The following code represents the problem. package javaapplication1; import java.util.TreeSet; public class MyObj implements Comparable<MyObj> { public long sort_1; public long id; public MyObj(long sort, long id) { this.sort_1=sort; this.id=id; } @Override public int compareTo(MyObj other) { int ret = Long.compare(sort_1, other.sort_1); return ret; } public String toString() { return id+":"+sort_1; } public static void

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I use a multibinding with a value converter to provide the visual display of a collection of items in my DataContext . Here is a snippet of the XAML; <DataGrid.Columns> <DataGridTextColumn x:Name="Column1" SortMemberPath="{Binding Path=SomeDataModelProperty}"> <DataGridTextColumn.Binding> <MultiBinding Converter="{StaticResource MyCustomConverter}"> <Binding Path="SomeDataModelProperty" /> <Binding RelativeSource="{RelativeSource Self}" Path="ActualWidth" /> <!-- Other bindings --> </MultiBinding> </DataGridTextColumn.Binding> <

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have list of lists similar to this: a <- list( list(day = 5, text = "foo"), list(text = "bar", day = 1), list(text = "baz", day = 3), list(day = 2, text = "quux") ) with unknown number of fields and the fields my be out of order. how can I sort this list based on day? I need the list to be sorted ascending. I've search but I only found how to sort vectors. Is it possible to sort a list? 回答1: In order to sort that given "list of lists" a you can try to use sapply() with the extraction operator [[ to retrieve data from the list. These are

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Possible Duplicate: How to use std::sort with a vector of structures and compare function? I have a cat object (what?) and a catSort object which obviously sorts the cat objects. Below is the classes class cat { public: int age; }; class catSorter { public: vector< cat > cats; vector< cat > SortCatsByAge(); void AddCat( cat new_cat ); }; void catSorter::AddCat(cat new_cat){ this->cats.push_back(new_cat) } vector< cat > catSorter::SortCatsByAge(){ // Sort cats here by age! } cat tim; tim.age = 10; cat mark; mark.age = 20 cat phil; phil.age =

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am working on a Search Engine built in Lucene 5.2.1, but I am having trouble with Sort updated option for Search. I get an error while searching with the Sort option: Exception in thread "main" java.lang.IllegalStateException: unexpected docvalues type NONE for field 'stars' (expected=NUMERIC). Use UninvertingReader or index with docvalues. at org.apache.lucene.index.DocValues.checkField(DocValues.java:208) at org.apache.lucene.index.DocValues.getNumeric(DocValues.java:227) at org.apache.lucene.search.FieldComparator$NumericComparator

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm trying to GROUP , SORT and COUNT in a single query one of my table named 'commodities'. Here is a simplification of my MySql table : family sub_family name detailed_name Agro Grains Wheat Wheat per 1 mt Agro Grains Corn Corn per 1 mt Agro Grains Sugar Sugar per 1 mt Agro Fruits Apple Apple red Agro Fruits Apple Apple green Agro Fruits Apple Apple yellow Agro Fruits Lemon Lemon classic Wood Tree Lemon Lemon in logs Wood Tree Oak Oak in logs Wood Tree Epicea Epicea in logs Wood Packaging Kraftliner Krafliner 3mm I would like to : GROUP by

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Is there a way to sort std::map by the data rather than the key? Right now my code duplicates the entire map in to an array just to do this. 回答1: As far as I can remember, std::map will give you the iterator that will go through the items sorted by the key. Only way to go through the sorted items by the value, and still use the map, is to rewrite whole collection to another map, with key and value reversed. 文章来源: std::map sort by data?

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to use aggregate with with project, match and sort but i am getting an exception ( MongoResultException to be exact) saying exception: A pipeline stage specification object must contain exactly one field. It works fine when I did not use sort and limit but I need them for this. The reason I am not using find() because I read somewhere that it can increase performance. Please help $query = array(.... //An actual query that works with find() $collection = $this->db->CollectionName; $project = array( '$project' => array( 'Field1' =>

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm using KendoUI Grid to show data. I have server paging working like a charm. The each page change in the kendo grid is a new ajax request to the server and the server returns the correct page of data. I am now trying to do server-side sorting, but I'm having trouble getting model binding to bind to the sort values. This is what the request from the Kendo Grid looks like: My action method looks like this: public JsonResult GetReports(int pageSize, int skip, List<KendoSort> sort) { // sort is not being populated with the right data. }