sorting

Javascript how to sort array of objects by numeric value of the string [duplicate]

China☆狼群 提交于 2020-06-23 09:45:38
问题 This question already has answers here : Sort array of strings by integer (which is the first character) (3 answers) Sort Array Elements (string with numbers), natural sort (8 answers) Closed 2 years ago . Below is an example of my array of objects and I am supposed to sort these by name. The js normal sorting sorts as shown below, however my target is to sort by the numeric value, eg: "1 ex, 2 ex, 3 ex, 4 ex, 11 ex ..". Could someone help me how to achieve this? [{id: 588, name: "1 ex"} {id:

Sort list of dicts by multiple values [duplicate]

拜拜、爱过 提交于 2020-06-23 01:56:21
问题 This question already has answers here : Sort a list by multiple attributes? (5 answers) Closed 3 years ago . I have the following dict tempdata = {'logs': [ {'starttime':'901', 'time':'5' }, {'starttime':'902', 'time':'3' }, {'starttime':'900', 'time':'2' }, {'starttime':'901', 'time':'2' }, {'starttime':'905', 'time':'1' }, {'starttime':'904', 'time':'1' } ] } I want to primarily sort by starttime . Which I do perfectly with: tempdata['logs'] = sorted(tempdata['logs'],key=lambda k: k[

Maintain subsequence order in OrderBy

我只是一个虾纸丫 提交于 2020-06-22 11:55:10
问题 Suppose I have a class with an integer Day property and an IEnumerable<T> of objects where the days are 2, 3, 4, 1, 3, 3 and 5 (in that order). Is there a way to guarantee that the order of the subsequence where (for example) o.Day == 3 is maintained from its elements' relative positions in the original list without requiring an explicit, custom implementation of IEnumerable ? 回答1: OrderBy is documented as being stable, if that is what you mean; so: you shouldn't need to do anything.

javascript sort function sorting wrong [duplicate]

跟風遠走 提交于 2020-06-22 10:08:48
问题 This question already has answers here : How to sort an array of integers correctly (23 answers) Closed 7 years ago . Hello I have a textbox having values like <input type="hidden" value="2,1,4,5,3,6,7,8,9,10,11,12" class="sortvalues" id="1_1_parent"> Now what I want to take the value of this textbox, want to split the values to array and then as last result I need a sorted array. What I have done. allsortedValues = $(".sortvalues").val(); allsortedValues = allsortedValues.split(",");

C - add element to sorted-linked-list (alphabetical sorting)

北城余情 提交于 2020-06-17 14:20:08
问题 I have to do some kind of work here. My task is to write words from file to a struct in alphabetical order. I thought "hmmmm.. that's easy", but not - it isn't. Or just I f*cked it up :( Can you guys tell me how should I alphabetically add words to my list using these 3 functions? Or maybe it is other way to do this? I share most of my code. struct Word { char* word; struct Word* pNext; }; typedef struct Word Word; bool IsLegitWord(char* word){ int word_length = strlen(word); int i = 0; for(i

How can I fix the issue in quick sort algoritm in Java

孤者浪人 提交于 2020-06-17 09:43:26
问题 I have a problem about sorting object array thanks to quick sort algorithm. I created Person object including id , name , surname and lastly age . I used comparator to sort list in terms of the attributes of person object. Here is an example shown below. Comparator<Person> compTr = new Comparator<Person>() { @Override public int compare(Person p0, Person p1) { return Long.compare(p0.getId(), p1.getId()); } }; I think my problem is located in both two while loop by implementing greaterthan and

How to sum and group a table by a specific column

落花浮王杯 提交于 2020-06-17 09:38:30
问题 I have a database like this: Question table: QId | Title ---------- 1 | SR 4 | TR 9 | AA Answer table: RId | QId ---------- 2 | 1 3 | 1 5 | 4 6 | 4 7 | 1 8 | 4 Vote table: PubId | Type ------------- 2 | P 3 | N 3 | N 1 | P 1 | N 5 | P 4 | P 2 | N 2 | P I want to calculate the score of every question. The score of a question is the difference between positive and negative votes on that question and all of its answers. For example the score of question 1 (with answers as 2, 3 and 7) with QId of

sort matrix up to nth column c++

淺唱寂寞╮ 提交于 2020-06-17 09:36:10
问题 If I have a matrix like this: 4 5 3 6 8 7 9 5 4 2 1 3 and I want only to sort only the first two rows such that I get: 3 4 5 6 7 8 9 5 4 2 1 3 How can I achieve that using C++14? 回答1: C++ STL provides a function sort that sorts a vector or array. The average of a sort complexity is N*log2 (N) Syntax: sort(first, last); Here, first – is the index (pointer) of the first element in the range to be sorted. last – is the index (pointer) of the last element in the range to be sorted. Example: For

Is there a way to keep the sorting in core data in the time order the objects are added? [duplicate]

柔情痞子 提交于 2020-06-17 09:32:21
问题 This question already has an answer here : How to sort Core Data array based on Date Entered (1 answer) Closed 23 days ago . If I just add mocked data to coreData like this: func mockData() {´ let entity = NSEntityDescription.entity(forEntityName: "LocalDoorCoreDataObject", in: context) for i in 1...3 { var myEntity = MyCoreDataObject(entity: entity!, insertInto: context) myEntity.dName = "MOCKED NAME \(i)" } } But when I fetch the data it's not ordered 1, 2, 3, but is rather listed randomly.

Sorting CouchDB result by value

生来就可爱ヽ(ⅴ<●) 提交于 2020-06-17 06:44:31
问题 I'm brand new to CouchDB (and NoSQL in general), and am creating a simple Node.js + express + nano app to get a feel for it. It's a simple collection of books with two fields, 'title' and 'author'. Example document: { "_id": "1223e03eade70ae11c9a3a20790001a9", "_rev": "2-2e54b7aa874059a9180ac357c2c78e99", "title": "The Art of War", "author": "Sun Tzu" } Reduce function: function(doc) { if (doc.title && doc.author) { emit(doc.title, doc.author); } } Since CouchDB sorts by key and supports a