My professor provided me with a file called CursorList.cpp that implements a "Cursor Linked List". The problem is - I have no idea what that even is!
Could anybody give me the gist of it?
Thanks!
Situation: There are several entities in a simulated environment, which has an artificial notion of time called "ticks", which has no link to real time. Each entity takes it in turns to move, but some are faster than others. This is expressed by a delay, in ticks. So entity A might have a delay of 10, and B 25. In this case the turn order would go:…
Suppose I have a function which can either take an iterable/iterator or a non-iterable as an argument. Iterability is checked with try: iter(arg).
Depending whether the input is an iterable or not, the outcome of the method will be different. Not when I want to pass a non-iterable as iterable input, it is easy to do: I’ll just wrap it with a…
Consider the 0/1 knapsack problem.
The standard Dynamic Programming algorithm applies only when the capacity as well as the weights to fill the knapsack with are integers/ rational numbers. What do you do when the capacity/weights are irrational?
The issue is that we can't memoize like we do for integer weights because we may need…
I'm implementing a interpreter-like project for which I need a strange little scheduling queue. Since I'd like to try and avoid wheel-reinvention I was hoping someone could give me references to a similar structure or existing work. I know I can simply instantiate multiple queues as I go along, I'm just looking for some perspective…
Is there any tricky way to implement a set data structure (a collection of unique values) in C? All elements in a set will be of the same type and there is a huge RAM memory.
As I know, for integers it can be done really fast'N'easy using value-indexed arrays. But I'd like to have a very general Set data type. And it would be…
We have to maintain and even develop C-code of our legacy system. Is there good collection library that would support Java/C# (new versions) style collections. Hashtable, HashSet, etc. Of course without objects, but with structs. The HashTable key limitations to "strings" and ints is not a problem. It wouldn't be bad if it's…
Hi,
I'm creating fantasy football system on my website but i'm very confuse about how I should link some of my table.
Tables
The main table is Pool which have all the info about the ruling of the fantasy draft.
A standard table User, which contains the usual stuff.
Intersection table called pools_users which contains…
I have a dictionary object like:
Dictionary<string, HashSet<int>> dict = new Dictionary<string, HashSet<int>>();
dict.Add("foo", new HashSet<int>() { 15,12,16,18});
dict.Add("boo", new HashSet<int>() { 16,47,45,21 });
I have to print in such a way such that result…
Hi guys. I'm looking to create an options table in my db that makes every record a system option, so I can work with a little number of fields.
My db has the following structure:
3 columns named id, name, and value
The following data is inserted as an example:
+--+-----------+--------------------------+
|id|name…
Hi,
Scenario is as follows:-
I want to reverse the direction of the singly linked list, In other words, after the reversal all pointers should now point backwards..
Well the algorithm should take linear time.
The solution that i have thought of using another datastructure A Stack.. With the help of which the…
I am attempting to create a nice interface to access a data set where each value has several possible keys. For example, suppose that I have both a number and a name for each value in the data set. I want to be able to access each value using either the number OR the name.
I have considered several possible…
Hi,
The situation is as follows:-
We have n number and we have print
them in sorted order. We have access
to balanced dictionary data structure,
which supports the operations serach,
insert, delete, minimum, maximum each
in O(log n) time.
We want to retrieve the numbers in
sorted order…
I'm in need for a data structure that can handle small sets (10-20 strings, at most 50, of varying length) very fast. False positives is ok, but false negatives are not.
The last requirement makes bloom filters seem like a good fit, but I'm not sure about their speed, any other recommendations?
How to implement a buffer of the packets where each packet is of the form:
typedef struct{
int32 IP; //4-byte IP-address
int16 ID; //unique sequence id
}t_Packet;
What should be the most appropriate data structure which:
(1) allows to collect at least 8000 such packets (fast Insert and…
I'm trying to save the address of a dynamic array index.
struct sstor *dlist;
struct node *q;
q->item = &(dlist->item[(dlist->sz)-1]); // Problem?
This is my node
struct node {
char **item;
struct node *next;
struct node *prev;
};
This is my array
struct sstor {
int sz;…
Im running through a set of DirectX tutorials online and I have the following structure:
struct CUSTOMVERTEX
{
FLOAT x, y, z, rhw; // from the D3DFVF_XYZRHW flag
DWORD color; // from the D3DFVF_DIFFUSE flag
}
My basic understanding of directX leads me to thing tha color is made up of 8-bit…
I'm looking for an efficient way of storing an ordered list/set of items where:
The order of items in the master set changes rapidly (subsets maintain the master set's order)
Many subsets can be defined and retrieved
The number of members in the master set grow rapidly
Members are added to and…
I need to sort data based on the third column of the table data structure. I tried based on the answers for the following question. But my sorting does not work. Please help me in this.
Here goes my code.
Object[] data = new Object[y];
rst.beforeFirst();
while…
I've got a set of data that has three attributes, say A, B, and C, where A is kind of the index (i.e., A is used to look up the other two attributes.) What would be the best data structure for such data?
I used two dictionaries, with A as the index of each. However, there's key…
While searching for some functions in C++ STL documentation I read that push and pop for priority queues needs constant time.
"Constant (in the priority_queue). Although notice that push_heap operates in logarithmic time."
My question is what kind of data structure is used to…
I'm developing a OpenGL based simulation in C++. I'm optmizing my code now and i see throughout the code the frequently use of std:list and std:vector. What is the more performatic: to continue using C++ stl data structs or a pointer based linked list? The main operation that…