algorithm - Grid data structure - Stack Overflow
2010年8月24日 · Then you just need a deleted bit in that data structure. By the way, Edmund's scheme would be fine for you as well. Even though it takes O(n) time to delete a row or column of length n, you can presumably amortize that cost against the cost of creating those n elements, making the delete O(1) amortized time.
What are the lesser known but useful data structures?
PS: I am also interested in techniques like Dancing links which make clever use of properties of a common data structure. EDIT: Please try to include links to pages describing the data structures in more detail. Also, try to add a couple of words on why a data structure is cool (as Jonas Kölker already pointed out).
excel - Set data structure in VBA - Stack Overflow
2017年1月18日 · Simply write a wrapper for Scripting.Dictionary that exposes only set-like operations.. clsSet. Option Explicit Private d As Scripting.Dictionary Private Sub Class_Initialize() Set d = New Scripting.Dictionary End Sub Public Sub Add(var As Variant) d.Add var, 0 End Sub Public Function Exists(var As Variant) As Boolean Exists = d.Exists(var) End Function Public …
What are the underlying data structures used for Redis?
2012年3月9日 · The Set data structure uses a Dictionary to guarantee there are no duplicates. The Sorted Set uses a dictionary to map an element to its score, which is why ZSCORE is an O(1) operation. 3. Doubly Linked Lists. The list data type is implemented using Doubly Linked Lists. Redis' implementation is straight-from-the-algorithm-textbook.
Whats the difference between objects and data structures?
2014年5月1日 · A data structure is a structure which organizes certain data in a certain way. You can implement structures in ways different that by using classes (that's what you do in languages which don't support OOP e.g.; you can still implement a data structure in C let's say).
What is Vector data structure - Stack Overflow
2015年9月12日 · So, the data structure representing a vector must include the size, whereas an array doesn't have storage to include the size, it's assumed by the way it's allocated. That is to say, if you dynamically allocate an array, there is no data structure storing the size of that array, the programmer must assume to know that size, or store it in a ...
data structures for scheduling workflow? - Stack Overflow
2010年3月6日 · I'm wondering what kind(s) of data structures / algorithms might help facilitate handling the following situation; I'm not sure if I need a single FIFO, or a priority queue, or multiple FIFOs. I have N objects that must proceed through a predefined workflow. Each object must complete step 1, then step 2, then step 3, then step 4, etc.
Table like java data structure - Stack Overflow
2009年11月7日 · class Structure { Object [][] data; Object [] indexColumn; // the sij? And that's it: you should add a sort method indicating the direction, and sort using the "indexColumn" It is VEEERY simple I think ( and If I understood your "question" )
Are there any open source C libraries with common data structures?
I'm looking for a C library with common reusable data structures like linked lists, hash tables etc. Something like the source distributed with Mastering Algorithms with C (Paperback) by Kyle Loudon.
oop - Class vs data structure - Stack Overflow
2010年11月22日 · A data structure is a conceptual way of modeling data, each different data structure having different properties and use cases. A class is a syntactic way that some languages offer to group data and methods.