sorting

问题 Can a default Javafx table sort on multiple fields by dragging the columns on a dropzone? My user need to select one or multiple columns to sort on different columns. The application is fully written in Java8 with JavaFX. The source code that I now use is: import java.util.Collections; import java.util.Comparator; import java.util.function.Function; import javafx.application.Application; import javafx.beans.property.SimpleObjectProperty; import javafx.geometry.Insets; import javafx.geometry

问题 I have an ArrayCollection of Objects. Each Object has the following keys/values: {date: 2009-12-01, visits=13555, bouceRate=45} {date: 2009-12-05, visits=46955, bouceRate=45} {date: 2009-12-06, visits=13685, bouceRate=45} {date: 2009-12-02, visits=13685, bouceRate=45} {date: 2009-12-04, visits=68755, bouceRate=45} {date: 2009-12-03, visits=35875, bouceRate=45} I need to sort this ArrayCollection by date, so it would be from past to present - like so: {date: 2009-12-01, visits=13555, bouceRate

问题 In our MongoDB document, we have two fields, organisationId and employeeId . I want to show all the elements in a collection that have either of them matching the query parameters, so a basic OR. One condition for Sorting is that I require is that the documents that have both the fields matching the query parameters should occur first, and then the documents matching organisationName parameter, next. The idea is to show the data for the employee (i.e., you) first and then that of your

问题 I'm reading a multi-dimensional array from JSON. I then need to sort based on two of the parameters, about 3 levels deep in the array. I've tried array_multisort, but could only do one level at a time. I then moved to usort, based on several examples I saw here on stackoverflow, but it stubbornly refuses to work. JSON: [ { "multiple parameters": "foobar", "projects": [ { "id": "00101", "date": "9", "time": "14:00", "duration":"30" }, { "id": "EX001", "date": "8", "time": "13:30", "duration":

问题 I've got two arrays var mp3 = ['sing.mp3','song.mp3','tune.mp3','jam.mp3',etc]; var ogg = ['sing.ogg','song.ogg','tune.ogg','jam.ogg',etc]; i need to shuffle both arrays so that they come out the same way, ex: var mp3 = ['tune.mp3','song.mp3','jam.mp3','sing.mp3',etc]; var ogg = ['tune.ogg','song.ogg','jam.ogg','sing.ogg',etc]; there's a few posts on stackoverflow that shuffle arrays in different ways--this one is pretty great--but none of them demonstrate how to shuffle two arrays in the

问题 We currently have some data on an HDFS cluster on which we generate reports using Hive. The infrastructure is in the process of being decommissioned and we are left with the task of coming up with an alternative of generating the report on the data (which we imported as tab separated files into our new environment) Assuming we have a table with the following fields. Query IPAddress LocationCode Our original SQL query we used to run on Hive was (well not exactly.. but something similar) select

问题 I try to drop and trim a list to build a pagination system local function createMap(postId, paramDate) local m = map { id = postId, date = paramDate }; return m; end function get(rec, binName, from, to) if aerospike:exists(rec) then local l = rec[binName] if (l == nil) then return nil else local length = #l; if (length <= 10 and to <=10) then return l; elseif (to >= length) then local drop = list.drop(l, from); return drop; else list.trim(l, to);--Remove all elements at and beyond a specified

问题 I have used the bin packing js implementation here https://github.com/jakesgordon/bin-packing When I specify the frame size as 800x600 and Blocks size as 150x700,150x700 it would say that, it cant accommodate However, there is ample space. The same when 700x150, 700x150 is made, it would fit it. How Do I adapt the code, so that it can dynamically rotate the block size and fits in to the frame. The js packer used here is, Packer = function(w, h) { this.init(w, h); }; Packer.prototype = { init:

问题 I am working on a problem in which I am given a number and need to find every possible permutation of the digits in that number. For example, if I am given 20 , the answer would be: 20 and 02 . I know that there are n! possible permutations, and I have divided up the numbers so that each digit is an element in an array. My question is: How can I loop through this array to generate every possible combination of a number that is at least 2 digits long but no more than 6. 回答1: Say the n

问题 I have one table with every Fortune 1000 company name: FortuneList: ------------------------------------------------ |fid | coname | ------------------------------------------------ | 1 | 3m | | 2 | Amazon | | 3 | Bank of America | | 999 | Xerox | ------------------------------------------------ I have a 2nd table with every user on my newsletter: MyUsers: ------------------------------------------------ |uid | name | companyname | ------------------------------------------------ | 1350 |