sorting

问题 Suppose I have a Javascript array, like so: var test = ['b', 'c', 'd', 'a']; I want to sort the array. Obviously, I can just do this to sort the array: test.sort(); //Now test is ['a', 'b', 'c', 'd'] But what I really want is an array of indices that indicates the position of the sorted elements with respect to the original elements. I'm not quite sure how to phrase this, so maybe that is why I am having trouble figuring out how to do it. If such a method was called sortIndices(), then what I

问题 I have below ObservableCollection<string> . I need to sort this alphabetically. private ObservableCollection<string> _animals = new ObservableCollection<string> { "Cat", "Dog", "Bear", "Lion", "Mouse", "Horse", "Rat", "Elephant", "Kangaroo", "Lizard", "Snake", "Frog", "Fish", "Butterfly", "Human", "Cow", "Bumble Bee" }; I tried _animals.OrderByDescending . But I don't know how to use it correctly. _animals.OrderByDescending(a => a.<what_is_here_?>); How can I do this? 回答1: Introduction

问题 I have below ObservableCollection<string> . I need to sort this alphabetically. private ObservableCollection<string> _animals = new ObservableCollection<string> { "Cat", "Dog", "Bear", "Lion", "Mouse", "Horse", "Rat", "Elephant", "Kangaroo", "Lizard", "Snake", "Frog", "Fish", "Butterfly", "Human", "Cow", "Bumble Bee" }; I tried _animals.OrderByDescending . But I don't know how to use it correctly. _animals.OrderByDescending(a => a.<what_is_here_?>); How can I do this? 回答1: Introduction

问题 So i have a class with five integer members struct Person { int health; int sport; int relatioship; int happiness; int intelligence; }; I want to know which one has the highest value, which one the second highest... Depending on the ranking of this 5 integers i want to assign them a job. 回答1: You can sort a representation of each of the values, and use that choose the job. enum Stat { Health; Sport; Relatioship; Happiness; Intelligence; }; using Stats = std::array<Stat, 5>; using Job = std:

问题 Where can I get a sample code for merge sort a link list? 回答1: Here. (Courtesy of Google) 回答2: Here's a description of how to implement it. 来源： https://stackoverflow.com/questions/1733420/where-can-i-get-c-c-sample-code-for-merge-sort-a-link-list

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 2 years ago . In the last hours I have tried to write the selection sort algorithm in Java without looking at finished code. I just read how the algorithm works (by words). I won't copy paste the explanation but rather depict it (to check if I understood it): -We have one unsorted array A and an empty array B (which has the

问题 I have a csv file separated by semicolons. Which contains lines as shown below.. And I need to sort it by the first and third column, respecting the groups of lines defined by the value of the first column. booke;book;2 booke;booke;1 booke;bookede;6 booke;bookedes;8 booke;booker;4 booke;bookes;7 booke;booket;3 booking;booking;1 booking;bookingen;2 booking;bookingens;3 booking;bookinger;7 booking;bookingerne;5 booking;bookingernes;6 booking;bookingers;8 booking;bookings;4 Expected output:

问题 I have this array : $data = Array ( [1] => Array ( [id] => '52040344' [outcome] => 0 [names] => Array ( [name_eng] => 'this is a name 2' ) ) [2] => Array ( [id] => 54030157 [outcome] => 1108541 [names] => Array ( [name_eng] => 'this is a name 1' ) ) [3] => Array ( [id] => '54030157 [outcome] => '109635' [names] => Array ( [name_eng] => 'this is a name 1' ) ) ) i want to to return an array with the sum of all outcome having the same id, knowing that if they have same id, they have same name.

问题 I need to sort the list of file names by their version number with least first, in windows batch script. The file names are like: 2_0_0to2_0_1 2_0_1_to2_0_2 ... 2_0_12_to2_0_13 ... I've tried dir and sort in Windows but it seems to only look at char positions which wouldn't work in the case of double digits. In Linux, I've done this with: ls *.txt | sort -n -t _ -k1 -k2 -k3. How to do this on Windows. Please help. Thanks! 回答1: Try this: @ECHO OFF &SETLOCAL ENABLEDELAYEDEXPANSION FOR %%x IN (*

问题 What is the sorting mechanism of Hibernate for implementation of getResultList() of JPA ? Is it by the id or is it not guaranteed a proper order ? I did not see any detail regarding this in JPA javadoc. /** * Execute a SELECT query and return the query results * as an untyped List. * * @return a list of the results * * @throws IllegalStateException if called for a Java * Persistence query language UPDATE or DELETE statement * @throws QueryTimeoutException if the query execution exceeds * the