sortedlist

问题 CHECK UPDATE 3 below I found out the issue I ran into is related to a known serious problem with c# string comparers for .Net 4.0, 4.0 client and 4.5, that will lead to inconsistent sort order of lists of strings (causing the output to depend on the order in the input and the sort algorithm used). The problem was reported to Microsoft in Dec 2012 and closed as "won't be fixed". A work around is available, but is so much slower that it is hardly practical for large collections. While

问题 I have created a program which compares different search methods which search for a random int value 0-999 from a sorted array which is 0-999. I have created a binary search which works perfectly and after doing this I decided to try to create a search which, instead of splitting the values into half, splits them into 1/3 and 2/3 depending. So basically if I have {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15} and I was looking for 10 I would go from above to {6,7,8,9,10,11,12,13,14,15} to {10,11,12,13

问题 just started to learn about linked list and have to make a OOP to read, sort, and display some file. Here's the format of the txt file: 20 john adam george . . . the first number is the number of names included in the txt file and each line follows has a name. Here's my main.cpp #include "ListClass.h" #include <iostream> #include <fstream> #include <string> using namespace std; int main() { //declaring class ListClass name; string file; char holder[256]; cout<<"Please enter the data file to

问题 I would like to understand the Computational Complexity of a ConcurrentDictionary vers SortedList (Which is O(logarithmic(n)) ), is a ConcurrentDictionary just a concurrent synchronized implementation of a SortedList ? or do these data structures vary? among one another? 回答1: ConcurrentDictionary<T,U> is a concurrent version of a Dictionary<T,U> . It does not sort by keys like a SortedList<T,U> . The complexity is closely related to a Dictionary<T,U> 's complexity, so fetches approach O(1).

问题 Suppose we have a datatype of sorted lists, with proof-irrelevant sorting witnesses. We'll use Agda's experimental sized types feature, so that we can hopefully get some recursive functions over the datatype to pass Agda's termination checker. {-# OPTIONS --sized-types #-} open import Relation.Binary open import Relation.Binary.PropositionalEquality as P module ListMerge {𝒂 ℓ} (A : Set 𝒂) {_<_ : Rel A ℓ} (isStrictTotalOrder : IsStrictTotalOrder _≡_ _<_) where open import Level open import

问题 I am making gallery app and I want to add sorting to it I can sort item at run time by using Comparator but problem is whenever I quit app the list came form database again and all the list is unsorted I want to give option in my app to sort by date,size, name etc can you guys help how can i ahcevie this and remmeber user's choice if he next time run the app I have also read about sorted-list please tell me what is solution to my problem or any sample code currently I am doing this like this

问题 This would probably be implemented as a tree or something? My point is it needs to be efficient. I don't know where to find good implementations of data structures for Javascript for something like this, though. I don't want to have to roll my own if I can avoid it. Help appreciated. 回答1: Depends why you need it. For instance, if you only need the top element, this binary heap might be okay for you. Otherwise, implement a binarySearch and insertSorted functions for arrays, should not be more

问题 I have some problems understanding RecyclerView s SortedList . Lets say I have a very simple class only having a very simple class holding data: public class Pojo { public final int id; public final char aChar; public Pojo(int id, char aChar) { this.id = id; this.aChar = aChar; } @Override public String toString() { return "Pojo[" + "id=" + id + ",aChar=" + aChar + "]"; } } My understanding is that the sorted list won't contain any duplicates. But when I have a SortedList with callbacks like

问题 This is a continuation of questions like this one. Are there any guidelines for tweaking the performance? I don't mean gains in big-O, just saving some linear time. For example, how much does pre-sorting save on either SortedList or SortedDictionary ? Say I have a person-class with 3 properties to sort on, one of them is age in years. Should I bucket the objects on age first? Should I first sort on one property, then use the resulting list/dictionary to sort on two properties and so on? Any

问题 I have an application which got hung up when I tried to add items to it. When I checked the trace file I got this entry: for (int i=0; i<objects.Count; i++) { DataModelObject dmo = (DataModelObject)objects.GetAt(i); sl.Add(dmo.Guid, dmo); } } I don't know how to solve this issue. 回答1: The problem is that in a sorted list each key needs to be unique. So you need to check that you aren't inserting the same key (guid value) twice. Code shown below: for (int i=0; i<objects.Count; i++) {