I originally had the following callback passed as a parameter to the javascript array sort() function: function sortNumber(a,b) { return a-b; } However this doesn't work when my array contains positive and negative decimal numbers (i.e. -107.578, 97.453 etc.) How would I modify this to sort properly? ...
Hi, There are a couple of other posts about sorting a vector A based on values in another vector B. Most of the other answers tell to create a struct or a class to combine the values into one object and use std::sort. Though I'm curious about the performance of such solutions as I need to optimize code which implements bubble sort to ...
private static char[] quicksort (char[] array , int left , int right) { if (left < right) { int p = partition(array , left, right); quicksort(array, left, p − 1 ); quicksort(array, p + 1 , right); } for (char i : array) System.out.print(i + ” ”); System.out.println(); return array; } privat...
I'm trying to understand the space requirements for a Mergesort, O(n). I see that time requirements are basically, amount of levels(logn) * merge(n) so that makes (n log n). Now, we are still allocating n per level, in 2 different arrays, left and right. I do understand that the key here is that when the recursive functions return the sp...
Lets say i have the strings abc_ and abc2_. Now, normally when sorting i C# abc2_ would come after abc_, leaving the result: abc_ abc2_ I am using this to sort, if it matters: var element = from c in elements orderby c.elementName ascending select c; How can i change this? I want abc_ to come last. Reversing is not ...
I'm in a situation where I must output a quite large list of objects by a CharField used to store street addresses. My problem is, that obviously the data is ordered by ASCII codes since it's a Charfield, with the predictable results .. it sort the numbers like this; 1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 2, 20, 21.... Now the ob...
Hi All, I am using C#,ASP.NET I have a Gridview for which I have provided Sorting, Edit functionality. I am not able to perform EDIT when I perform Sorting. After sorting edit is set on some other row. I think there is some problem with the index it is taking.. Can any one help me how to fix this.. Regards sbmarya ...
Hi, I need to optimize some code that sorts a vector<pair<int, float >>a where the pairs needs to be sorted on the float value. The vector will have an length between 0 and 5. I've been googling and reading up on sorting methods in C++ but cannot find any benchmarks on sorting tiny data sets. For the system it's important be as fast as ...
How would you sort a scala.collection.Map[java.lang.String, Int] by its values (so on the Int)? What is a short and elegant way to do that? ...
I have a number of chunks of data. For arguments sake we'll say they are File 1 - 150Kb File 2 - 50Kb File 3 - 70Kb File 4 - 60Kb File 5 - 70Kb File 6 - 100Kb File 7 - 90Kb For transmission, I can package these up into a max payload of 300Kb. If you just iterate through them in order you'd get TRANS1: 150Kb + 50Kb + 70Kb = 270...
I have a hierarchy of nodes stored in DB. I select all, store them in an array, then iterate over them and create a nested array in memory. The input looks like this: [{name: A}, {name: B}, {name: X, parent: A}, {name: Y, parent: A}, {name: C}] The output looks like this: [{name: A, children:[{name: X}, {name: Y}]}, {B}, {C}] ...
In php I have a numerical array of associative arrays: mainArray: [ array1:['title':'Record a','order':'2'], array2:['title':'Record b','order':'4'], array3:['title':'Record c','order':'1'], array4:['title':'Record d','order':'3'] ] What is the simplest way to sort mainArray by the 'order' value of each associative array? Th...
I have a class named Graph, in this class I have a member named V, it is a vector. I have a struct named Edge, and a list of Edges. like below: struct Edge{ int u; int v; Edge(int u,int v){ this->u=u; this->v=v; } }; struct Vertex{ int d; int f; . . . } class Graph{ vector < Vertex > V; . . . int edgeCmp(Edge* ...
I have data like: Audio 1 Test File 10 Audio 2 Audio 3 File 11 Audio 1 Audio 13 Audio 22 File 20 Test Test File 22 Audio 10 File 1 File 2 I need it order first by the text (i.e. Audio, File, Test) and then by number (1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22 etc.) The problem is that sorti...
I am trying to sort the documents which I retrieve from MongoDB by a key that is in the first of several embedded documents. I am using mongod v1.4.3 with the ruby gem mongo-1.0.2. One document looks like this: >> pp MONGODB.collection('hotel_offer_groups').find_one "offers"=> [{"price"=>520.0, "rate"=>nil, "id"=>523960640,...
I have a struct like this: struct db { string name,sur; int num; }; And declared an array of db structs: struct db a[10]; and every member of a[] is filled with a name, surname and a number but there can be the same number appearing multiple times. I need to sort the numbers, and print the results, i.e. sort by the num of each s...
Hello guys! Actually this is an interesting topic from programming pearls, sorting 10 digits telephone numbers in a limited memory with an efficient algorithm. You can find the whole story here What I am interested in is just how fast the implementation could be in python. I have done a naive implementation with the module bitvector. T...
Write a static method in Java: public static void sortByFour (int[] arr) That receives as a parameter an array full of non-negative numbers (zero or positive) and sorts the array in the following way: In the beginning of the array all the numbers that are divisible by four will appear. After them all the numbers in the array that di...
Okay, a before; Array ( 'home' => array('order' => 1), 'about' => array(), 'folio' => array('order' => 2), 'folio/web' => array('order' => 2), 'folio/print' => array('order' => 1) 'contact' => array('order' => 2) ) And a desired after; Array ( 'home' => array('order' => 1), 'contact' => array('order' =...
Let's say I have a list of objects. (All together now: "I have a list of objects.") In the web application I'm writing, each time a request comes in, I pick out up to one of these objects according to unspecified criteria and use it to handle the request. Basically like this: def handle_request(req): for h in handlers: if h....