data-structures | A collection of powerful data structures | Natural Language Processing library
kandi X-RAY | data-structures Summary
kandi X-RAY | data-structures Summary
A collection of powerful data structures
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Top functions reviewed by kandi - BETA
- Entry point
- Synchronized
- Splits a node into two lists
- Inserts a node into the tree
- Removes the node at the given index
- Remove the specified object from the linked list
- Example of testing
- Benchmark int queue
- Test program
- Performs a benchmark of the benchmark
- Initializes the structures
- Unify two components
- Update the value at a given index
- Insert a new value at the given index
- Returns the rank of two nodes
- Queries an interval for a range query
- Construct the suffix array
- Removes the specified element from the heap
- Returns an iterator over all the keys in this map
- Construct the suffix array
- Remove a key from the map
- Returns a string representation of this combination
- Adds the given string to the bloom filter
- Returns an iterator over the nodes in the tree
- Returns an iterator over this node
- Returns a string representation of the hash table
data-structures Key Features
data-structures Examples and Code Snippets
Community Discussions
Trending Discussions on data-structures
QUESTION
I tried going through many similar questions regarding munmap_chunk(): invalid pointer
errors, but I'm stuck as to what to do. I tried adding free
commands too.
I'm a C++ novice and normally use Python and Java, so the whole concept of pointers and memory management are new to me. It would be great if someone can explain what I'm doing wrong.
Here is my code for my Array class for a generic T:
...ANSWER
Answered 2021-Jun-03 at 07:39Thanks to @S.M. @anastaciu and @jkb for their guidance.
The original code posted here was:
QUESTION
I'm learning a bit of JavaScript, but I'm having hard time understanding the lesson on FreeCodeCamp about the recursion countdown (link).
In the lesson, there this initial example. But I'm confused on how it operates:
...ANSWER
Answered 2021-Jun-01 at 17:26Here what the array looks like inside of each function call if this helps:
QUESTION
How can I call in batch a multiple level of array ?
I want to create an array of unique value with multiples data, then I will manage to make an associative array after unyfing the values.
I have a csv file with lot of value like this :
...ANSWER
Answered 2021-May-21 at 08:21when a variable that requires delayed expansion to access is composed of additional delayed variables, an additional for loop can be used to access sub variables:
QUESTION
this is a very small piece of code taken from this book about the Dijkstra Algorithm in Ruby: I think I can't post the entire example for copyright issue, so if you want you can download the source code from the above link of the book, the file will be in the folder jwdsal2-code\code\connecting_everything_with_graphs\dijkstra.rb
. - it runs perfectly and there isn't any error in the code.
The excerpt from the code is the following:
...ANSWER
Answered 2021-May-06 at 07:22Your solution is almost correct.
You assign the name
of the city to the current_city
variable whereas the original solution assigns the city object.
QUESTION
Hi there I'm trying to create a small tool that will create child directory's within the Root directory
Root Dir(python) And child Dir(DS, WEB, Flask, Learn) stuff like that
At starting I have done it statically Here is the Code
...ANSWER
Answered 2021-May-02 at 20:38To prompt the user, you can create a small function which ask for the user to enter values in order.
For example:
QUESTION
I'm trying to display a stacked bar chart on my web page, but it's not working.
I've tried to follow the documentation about data structure, but it seems not working. The two data are made from an Ajax call and built in js.
https://www.chartjs.org/docs/latest/general/data-structures.html
I've made a jsfiddle if you want to look at what I've done.
...ANSWER
Answered 2021-Apr-13 at 17:08So after, investigating styles and formatting, it was just a problem of versions. The parse options were not present in version 2.8.
QUESTION
I was studying DMA proxy and DMA proxy channels. Basically they are like letting Userspace application to write tx, read rx kernel data-structures. and let the device to access virtual memory data structures since devices understand physical addresses.
This code https://github.com/mstuehn/dma_proxy/blob/master/dma_proxy_test.c
and this article that I am reading https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18842418/Linux+DMA+From+User+Space
And from this Thesis http://www.diva-portal.org/smash/get/diva2:22746/FULLTEXT01.pdf it says this
in Linux the kernel uses virtual memory address but most hardware systems use physical address for bus addressing. For hardware to be able to access data structures residing in kernel virtual memory space these structures have to be mapped to physical memory address. Its not sufficient to use simple address conversion methods since some system memory management unit have to be re-programmed and bounce buffers have to be used (probably in system memory management unit -- please clarify).
I think I have some grasp of dma proxy drivers and associated Userspace application(What I am guessing is it is used in embedded Linux systems).
But What's the point of all of this for example if I am looking at NIC card, then whatever I suppose to get with the mmap call in Userspace application and Kernel implementation of MMAP
in proxy driver will have kernel data structure. in case of NIC card the RX/TX will be the device specific data structures representation in kernel memory space since geting struct ethhdr
/ struct iphdr
/ struct tcphdr
/ etc. from return of mmap is not possible since the above paragraph from thesis says conversion of virtual addresses to Userspace addresses is probably not possible (basically it says physical address. I am assuming this from the text read )
So basically I am not fully getting the use of dma proxy drivers. I need some explanation to clear this out and how can the return of mmap
calls be used in applications i.e. server applications in embedded Linux systems
ANSWER
Answered 2021-Apr-11 at 13:15What's the point of all of this for example if I am looking at NIC card, then whatever I suppose to get with the mmap call in Userspace application and Kernel implementation of MMAP in proxy driver will have kernel data structure.
What do kernel data structures have to do with it? If you are using DMA to get data from a NIC then surely you are getting raw data (ethernet frames, for example). The layout of such data is defined by the applicable network protocol and whatever higher-level protocols apply to the payload.
The kernel sources do define C structure types whose layouts map the fields of ethernet headers, IP headers, TCP headers, etc, but these follow the externally-defined layout of the data, not the other way around.
in case of NIC card the RX/TX will be the device specific data structures representation in kernel memory space
The formats of network transmissions are not device-specific (generally speaking).
since geting struct ethhdr / struct iphdr / struct tcphdr / etc. from return of mmap is not possible since the above paragraph from thesis says conversion of virtual addresses to Userspace addresses is probably not possible (basically it says physical address. I am assuming this from the text read)
Irrelevant (see above). Nevertheless, the quoted thesis excerpt says nothing at all like what you describe. It's not talking about user space versus kernel space at all, but rather about hardware programming interfaces vs kernel code. It is expressing some of the complications involved in writing (kernel-space) drivers.
how can the return of mmap calls be used in applications
The driver provides an interface to userspace in the form of a character device. Mmapping an appropriate range of bytes from that device into a program's memory space provides access to whatever data the driver exposes that way. In the case of an interface for DMA, that would presumably be the contents of the (physical) memory involved in the DMA transfer.
QUESTION
I have the following list:
...ANSWER
Answered 2021-Mar-29 at 01:52All you need is pd.Series(dictionary_variable)
As the example you shown, I provide this code for your problem, hope to be helpful:
QUESTION
I'm trying to subclass pandas data structure. If I set a field on the instance, it works fine.
...ANSWER
Answered 2021-Mar-26 at 20:43Your current version creates scheme
as an attribute (like .index
, .columns
):
QUESTION
I'm working on a min heap implementation and am really new to the concept.
Using this as reference:
https://www.geeksforgeeks.org/building-heap-from-array/
https://algorithmtutor.com/Data-Structures/Tree/Binary-Heaps/
I modified the code and came up with:
(this is the code I'm having problems with, all other code is irrelevant to my problem, at least so I think)
...ANSWER
Answered 2021-Feb-24 at 21:28The problem is the line node[0] = node[*n - 1];
in extractKey
. That is setting two of your node pointers to the same value, so you no longer have 100 unique node pointers. (As a consequence, it is also leaking memory.) Changing the line to swap(&node[0], &node[*n - 1]);
should solve the problem.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install data-structures
You can use data-structures like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the data-structures component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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