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): 问题: First of all this is homework , and I found another topic talking about the same subject but there was no answer. Here is the problem: The main problem is how to make this kind of sort. Should I convert each integer to bits and compare them? Please do not give me the solution just a hint or an explanation of how to do it. Thanks for your help ! [EDIT] I found this script in the internet but i did not understand how it works : #include <cstdlib> #include <iostream> #include <string> #include <cctype> #include<algorithm> #include<string>

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 need to sort a highscore file for my game I've written. Each highscore has a Name, Score and Date variable. I store each one in a List. Here is the struct that holds each highscores data. struct Highscore { public string Name; public int Score; public string Date; public string DataAsString() { return Name + "," + Score.ToString() + "," + Date; } } So how would I sort a List of type Highscores by the score variable of each object in the list? Any help is appreciated :D 回答1: I don't know why everyone is proposing LINQ based solutions that

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 a fetch request defined within my core data model called "RemainingGaneProjections". I want to execute that fetch request and sort the results by one of the entity's attributes. My code looks like this: NSFetchRequest *projectionsRequest = [model fetchRequestTemplateForName:@"RemainingGameProjections"]; NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"confidence" ascending:NO]; [projectionsRequest setSortDescriptors:[NSArray arrayWithObject:sortDescriptor]]; When I try to execute this code it crashes with the

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 understand that using SELECT unnest(ARRAY[5,3,9]) as id without an ORDER BY clause, the order of the result set is not guaranteed. I could for example get: id -- 3 5 9 But what about the following request: SELECT unnest(ARRAY[5,3,9]) as id, unnest(ARRAY(select generate_series(1, array_length(ARRAY[5,3,9], 1)))) as idx ORDER BY idx ASC Is it guaranteed that the 2 unnest() calls (which have the same length) will unroll in parallel and that the index idx will indeed match the position of the item in the array? I am using PostgreSQL 9.3.3. 回答1

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: Say I have at database table containing information about a news article in each row. The table has an integer "sort" column to dictate the order in which the articles are to be presented on a web site. How do I best implement and maintain this sort order. The problem I want to avoid is having the the articles numbered 1,2,3,4,..,100 and when article number 50 suddenly becomes interesting it gets its sort number set to 1 and then all articles between them must have their sort number increased by one. Sure, setting initial sort numbers to 100

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: Suppose I've a generic interface: interface MyComparable > { public int compare(T obj1, T obj2); } And a method sort : public static > void sort(List list, MyComparable comp) { // sort the list } I can invoke this method and pass a lambda expression as argument: List list = Arrays.asList("a", "b", "c"); sort(list, (a, b) -> a.compareTo(b)); That will work fine. But now if I make the interface non-generic, and the method generic: interface MyComparable { public > int compare(T obj1, T obj2); } public static > void sort(List list, MyComparable

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: data = c(1,2,3,4) names = c("foo", "bar", "baz", "yak") d = data.frame(data, row.names=names) This returns: data foo 1 bar 2 baz 3 yak 4 Now, I'd like to sort this dataframe by the column, without losing the row names attached. So, my result would be: data yak 4 baz 3 bar 2 foo 1 I've already tried the following: d[order(-d$data),] , which of course only gives me the one-dimensional list. arrange(d, desc(data)) from the plyr package, which drops the row names. Find out the order with o = order(-d$data) , then reconstruct the frame with 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 would like to quickly monitor some hosts using commands like ps,dstat etc using ansible-playbook. The ansible command itself perfectly does what I want, for instance I'd use: ansible -m shell -a "ps -eo pcpu,user,args | sort -r -k1 | head -n5" and it nicely prints all std output for every host like this: localhost | success | rc=0 >> 0.0 root /sbin/init 0.0 root [kthreadd] 0.0 root [ksoftirqd/0] 0.0 root [migration/0] otherhost | success | rc=0 >> 0.0 root /sbin/init 0.0 root [kthreadd] 0.0 root [ksoftirqd/0] 0.0 root [migration/0] However

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: This might be trivial, but I don't understand why the default implementation of Selection Sort is not stable? At each iteration you find the minimum element in the remaining array. When finding this minimum, you can choose the first minimum you find, and only update it when an element is actually smaller than it. So, the chosen element at each iteration is the first minimum - meaning, it's first on the previous sort order. So, to my understanding, the current sort will not destroy an order generated by a previous sort on equal elements. What

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: This question already has an answer here: how to sort array inside collection record in mongoDB 13 answers MongoDB sort documents by array elements 1 answer I'm trying to sort the data with nested field, called orderIndex . router.get("/", (req, res) => { Book.find({ _id: req.params.id }) .sort({ 'Book.chapters.orderIndex': "asc" }) //doesn't work .then(books => { res.render("books/index", { books: books }) }); }); Example of what a Book looks: //Book { "_id": { "$oid": "1234517fe46cf86900af82f" }, "chapters": [ { "_id": { "$oid": "a1" },