sorting

问题 currently I'm working on a project where i'm required to sort a total of 6 arrays. I've managed to sort the arrays individually using a quicksort, however, I'm just wondering if there is a way to sort 1 array and reflect that on the order of elements in the other arrays. For example, if I sort my date array to an ascending order, I want the other arrays to still match up with the dates in respect to the new order. If possible, could this still be done through a quick sort? 回答1: Likely you

问题 I was looking at another page here on stackoverflow and came across a working implementation of cycle sort, but I don't understand how a statement with a semicolon can exist before the curly braces in a while loop. I thought that the while loop is supposed to completely terminate and take no further actions once it finds a statement with a semicolon, so how is it that the code within the curly braces is getting executed? At first glance, I would interpret this as "var" gets incremented with

问题 I was looking at another page here on stackoverflow and came across a working implementation of cycle sort, but I don't understand how a statement with a semicolon can exist before the curly braces in a while loop. I thought that the while loop is supposed to completely terminate and take no further actions once it finds a statement with a semicolon, so how is it that the code within the curly braces is getting executed? At first glance, I would interpret this as "var" gets incremented with

问题 I have a sample code at StackBlitz that I expanded a little to include another new level Company under Address under User. It is based on the answer to a question. I like to have another nested sortable table under the Address. When a user clicks on an address row, I like to expand that row and show a table of company name, floor and unit. So far I have no luck. Appreciate if someone help me on writing the codes? Thanks 来源： https://stackoverflow.com/questions/59042625/angular-mat-table-3

问题 I have a list whose elements are like the following: Region_1.csv, Region_33.csv, Region_2.csv, Region_4.csv, Region_105.csv, .... The list has all numbers ranging from 1-105 with none missing. I want to sort this list according to the region number such that it looks like this: Region_1.csv, Region_2.csv, Region_3.csv, Region_4.csv, Region_105.csv etc. Since the numbers have variable digits, I am struggling to sort this list. Thanks. 回答1: You can use sorted with a custom function, splitting

问题 I have an array of arrays: Array ( [0] => Array ( [id] = 7867867, [title] = 'Some Title'), [1] => Array ( [id] = 3452342, [title] = 'Some Title'), [2] => Array ( [id] = 1231233, [title] = 'Some Title'), [3] => Array ( [id] = 5867867, [title] = 'Some Title') ) The need to go in a specific order: 3452342 5867867 7867867 1231233 How would I go about doing that? I have sorted arrays before, and read plenty of other posts about it, but they are always comparison based (i.e. valueA < valueB). Help

问题 I'm trying to solve this task of finding the unique element inside an array. So far I managed to solve 95%, but I'm failing on 0. I get an error saying that expected 0 and got 1. I should get //10, which it does, but after I'm failing the test online. For all other values it has passed. Any ideas about how to solve this and what I'm missing here? function findOne(arr) { let x = arr[0]; for (let i of arr) { if (i === x) { continue; } else { x = i; } return x; } } console.log(findOne([3, 10, 3,

问题 Just wondering what the best approach is. The following code needs to be able to sort a string date as a date value in descending order, but with pagination. documentList = collection.find().skip(skip).limit(limit).sort(Sorts.descending("ReceivedDate")); Aside from the sort not working the rest of the line works a treat. Im still getting used to using Mongo. thought it best to find out the right way, or good way, of doing things. Get into good habbits early. The difference to the links I

问题 I recently got the will_paginate gem installed and it works great, but I would like it to work with the setup I currently have. Right now I show all feeds (or posts) on the same page, but they are sorted after how many people clicked on that page: controller.rb @t = Time.now @h1 = @t - 1.hour @feeds = Feed.find(:all, :order => "created_at DESC").sort { |p1, p2| p2.impressionist_count(:filter=>:all, :start_date=>@h1) <=> p1.impressionist_count(:filter=>:all, :start_date=>@h1)} Now... I tested

问题 General Information I have a ListView containing multiple columns. I have used a Microsoft Method to sort my ListView Columns. The ListView is populated by a SQL Query which correctly sorts Strings and Integers together ( code shown below ). For Example: String & Integer Sorting Problem The following JobNumber strings are considered as sorted "10", "1", "2", "3" Using my SQL Query, they will become "1", "2", "3", "10" SQL String & Integer Sorter Here is the Query I use to sort Strings and