sorting

问题 I've been playing this for a while. Why is val_a changed when I run the function to sort val b? How can I get around this? When I run the function separately they work, but when I run them together something goes wrong somewhere. var GLOBALS = {"items":[]}; var val_a; var val_b; GLOBALS.items=[ {"thing":"one","val_a":0.5,"val_b":0.2}, {"thing":"two","val_a":0.2,"val_b":0.3}, {"thing":"three","val_a":0.3,"val_b":0.1}]; val_a = GLOBALS.items.sort(function (a, b) { a=parseFloat(a.val_a); b

问题 I'm trying to get a sorted SearchResultCollection object based on department, and then by name (both alphabetical). I'm trying to load two properties, but this merely takes the last property specified and sorts it based on that. My current code is the following: DirectoryEntry entry = new DirectoryEntry(ConfigurationManager.AppSettings["LDAP"]); DirectorySearcher search = new DirectorySearcher(entry) { SearchScope = SearchScope.Subtree, Filter = "(&(objectClass=user)

问题 Here is the description about the algorithm/solution: Input: An array of ints and an array index Output: Kth largest element of the array Read the first K elements into an auxiliary array (the K largest found so far) Sort the K-element array Then: for each remaining element { if (if it is smaller than the smallest element of the aux. array) { throw it away } else { remove the current smallest element of the auxiliary array place the element into the correct position in the auxiliary array } }

问题 I was making a program to take 10 user input values(1-100) and use bucket sort to sort it according to the user preference whether by ascending or descending order. I was able to create the ascending order. This is my code for ascending, but how could I make it descending? public class BucketSort{ Scanner in = new Scanner(System.in); public void bucketSort(int array[], int numBuckets){ System.out.println("Choose Sorting Order:"); System.out.println("[A] Ascending \n[D] Descending \n Enter

问题 I have an array say $actual = array("orange", "banana", "apple", "raspberry", "mango","pineapple"); Now I want the "apple" value to hold the first index in the array such that it holds the first position and remaining values follow it as show below. Desired array : $output = array ("apple", "orange", "banana", "raspberry", "mango", "pineapple"); How can I achieve this ? Thanks for reading ! 回答1: $actual = array("orange", "banana", "apple", "raspberry", "mango","pineapple"); $apple = $actual[2

问题 I am a novice programmer I am looking up into a problem which is using a recursive function. Though I could understand the main point, there is an unclear issue which I could not decipher immediately as I go through the debugging process. I will appreciate your help on my question. The problem's concept ( merge sorting ) is pretty straight forward, but I am confused with the way a recursive function works in general. Bellow is the program I am dealing with (from Georgia Tech course on Python)

问题 I understand the algorithm of building heap tree (max or min) but i don't understand the code of it: First: How does this loop build a max heap?, why we started the i with n/2-1 ? // Build heap (rearrange array) for (int i = n / 2 - 1; i >= 0; i--) heapify(arr, n, i); and this is the Heapify function: Secondly: how did we assume that largest is "i" ? Third: why we heapify again in the last line? // To heapify a subtree rooted with node i which is // an index in arr[]. n is size of heap void

问题 This question already has answers here : Grouped sorting on a JS array (4 answers) Closed 6 years ago . If I have an array of locations like so: ["Roberts", "baltimore", "Maryland", "21212"], ["Adams", "baltimore", "Maryland", "21212"], ["Joes", "philadelphia", "Pennsylvania", "30333"], ["Carls", "new york", "New York", "40415"] Using Javascript or Jquery, How would I first sort them by state, then by name, so the resulting order would be: ["Adams", "baltimore", "Maryland", "21212"], [

问题 My current Project is a little Jquery Game. Every picture in the Array Bildquelle (which I saved in a json) belongs to a number in the Array numbers, but in the same order, so that Bild1 is number 1 etc. But I want to display they in a random order. Is there a way to sort them on the same random system? Thank you in advance! var Bildquelle = [ "../img/Bild1.png", "../img/Bild2.png", "../img/Bild3.png", "../img/Bild4.png", "../img/Bild5.png", "../img/Bild6.png", "../img/Bild7.png", "../img

问题 I need to sort a list of objects and an arbitrary sort property. If there are multiple objects in my list that have the same value for that sort property, then repeatedly sorting the same list will rearrange the members with the same value of sort property. To be clear, each time sort is run, a new list is generated and the order of members is arbitrary and not necessarily the same as it was the last time the list was sorted. Is there a way to avoid this? Here is a code sample: List<T> myList