pairing | godoc https : //godoc.org/github.com/mnhkahn/pairing
kandi X-RAY | pairing Summary
kandi X-RAY | pairing Summary
pairing is package can encode and decode integers, decoded integers can keep sorts. It base on cantor pairing function. Wiki:
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pairing Key Features
pairing Examples and Code Snippets
def stable_matching(
donor_pref: list[list[int]], recipient_pref: list[list[int]]
) -> list[int]:
"""
Finds the stable match in any bipartite graph, i.e a pairing where no 2 objects
prefer each other over their partner. The functi
public static boolean countFriendsPairing(int n, int a[]) {
int dp[] = new int[n + 1];
// array of n+1 size is created
dp[0] = 1;
// since 1st index position value is fixed so it's marked as 1
for (int i = 1; i
static int countFriendsPairing(int n)
{
int a = 1, b = 2, c = 0;
if (n <= 2) {
return n;
}
for (int i = 3; i <= n; i++) {
c = b + (i - 1) * a;
a = b;
b
Community Discussions
Trending Discussions on pairing
QUESTION
I have 2 large dataframes, df1 and df2. I am missing a column (colB) in df2 and I would like to add that column based of the values in the shared column (colA). If I was using Excel I would do this via a standard vlookup formula but I’m struggling to get the desired results using the pandas merge function.
colA and colB both contain multiple entries of the same value so I’m using this line of code to create a new dataframe with only the unique pairings.
...ANSWER
Answered 2021-Jun-11 at 12:01If you are getting more rows after the merge, this means that colA
is not a unique key of df_keyvalues
. This in turn means that the mapping colA -> colB
is not unique in df1
, i.e. for at least one value of colA
there are multiple values of colB
.
You need to create a unique mapping colA -> colB
from df1
first. One way to do this would be:
QUESTION
I have a Json object which i get from a API, so i can not change it and need to work with it like it is. I see it have a lot of backlashes but if i put the json string into a json validator i get the info its vallid.
if i use the json object in javascript i also can read it until the last part where i get a error, when you take my json string and you do the following steps, you will see no error message:
...ANSWER
Answered 2021-Jun-07 at 01:20When you see an error like that after adding that particular line, then the syntax error is on that line. With that being said, you cannot have variable names in JavaScript start with a number. But, you can still make it work by accessing the object like a map rather than a member variable, by using bracket instead of dot notation syntax:
QUESTION
I want to convert an object into an array of Key/Value pairings. For instance:
...ANSWER
Answered 2021-Jun-06 at 01:59Note that the desired dictToArray
function type can run afoul of the problem mentioned in Why doesn't Object.keys return a keyof type in TypeScript?, whereby an object types in TypeScript are open and values can contain more properties at runtime than are known to the compiler. This:
QUESTION
I'm trying to match job candidates to mentors based on different several variables that would hopefully create a good match. There are two Pandas DataFrames (one for candidates and one for mentors) that I'm trying to connect based on experience, location, desired job, etc.
For example I have a mentor DataFrame that might look something like the below:
...ANSWER
Answered 2021-Jun-04 at 00:08@Henry is on the right path. You'll need to modify your candidate dataframe to a) make sure all arrays are the same length (or add NaN
s if you don't have them, and b) tweak a bit to make sure you actually have some matches.
I used your mentor_df, and the following candidate_df:
QUESTION
I have a repetitive sanity-check process I go through with most calls to a BeautifulSoup object where I:
- Make the function call (
.find
,.find_all
,.select_one
, and.select
mostly) - Check to make sure the element(s) were found
- If not found, I raise a custom
MissingHTMLTagError
, stopping the process there.
- If not found, I raise a custom
- Attempt to retrieve attribute(s) from the element(s) (using
.get
orgetattr
)- If not found, I raise a custom
MissingHTMLAttributeError
- If not found, I raise a custom
- Return either a:
- string, when it's a single attribute of a single element (
.find
and.select_one
) - list of strings, when it's a single attribute of multiple elements (
.find_all
and.select
) - dict, when it's two attributes (key/value pairs) for multiple elements (
.find_all
and.select
)
- string, when it's a single attribute of a single element (
I've created the below solution that acts as a proxy (not-so-elegantly) to BeautifulSoup methods. But, I'm hoping there is an easier eay to accomplish this. Basically, I want to be able to patch all the BeautifulSoup methods to:
- Allow for an extra parameter to be passed, so that the above steps are taken care off in a single call
- If using any of the above methods without providing the extra parameter I want to return the BeautifulSoup objects like normal or raise the
MissingHTMLTagError
if the return value is None or an empty list.
Most of the time the below function is used with a class variable (self._soup
), which is just a BeautifulSoup object of the most-recent requests.Response
.
ANSWER
Answered 2021-May-31 at 23:21I believe I've figured out a succinct and reasonable way to accomplish what I'm looking for with the following wrapper:
QUESTION
I have developed an application on an on-board device which allows a smartphone to be able to connect in secure BLE.
Everything works fine but I notice that every time I do a "pairing" via an Android smartphone, that the smartphone "bonds" the device even though I specified in the request that I did not want bondage. I don't have this problem on IOS.
Here are the requests that are sent by my on-board device to the smartphone:
Is it possible that Android does not support "pairing only"? If it is paired, it does a "boding" automatically even if it has received a request asking it not to do a bond?
Thank you
...ANSWER
Answered 2021-May-26 at 14:16"Non-bondable mode" is mandatory to support in the Bluetooth Core specification. If Android makes a permanent bond, even though you say to not bond in the "Pairing response", it's a bug in Android. Please file a bug report to Android Open Source Project (AOSP).
QUESTION
I have a set of pairs of record IDs and for each pair a corresponding probability that these records actually belong to each other. Each pair is unique, but any given ID may be part of more than one pairing.
E.g.:
...ANSWER
Answered 2021-May-25 at 13:26One approach is to switch from using a column-row based model like you have with the data frames to using a Graph model. There are several python libraries that can do this including NetworkX. https://pypi.org/project/networkx/
The idea is each of your pairs becomes nodes in a graph, and then the edges are assigned the weights. Once you have that data structure, you can take any given node and find the highest weight edge. You can do all sorts of edge weight based path algorithms.
There is another python library: https://github.com/pgmpy/pgmpy which is built on networkx that will even be probability-aware. It might have what you need even more closely.
For this sort of query a graph library is oodles more efficient than trying to do it with row-column data structures.
QUESTION
I am new to Pandas (but not to data science and Python). This question is not anly about how to solve this specific problem but how to handle problems like this the panda-way.
Please feel free to improve the title of that question. Because I am not sure what are the correct terms here.
Here is my MWE
...ANSWER
Answered 2021-May-25 at 12:43You can filter your data frame this way:
QUESTION
I have a table of events like this
...ANSWER
Answered 2021-May-21 at 20:50here is one way using window function:
QUESTION
I am currently working on a C#-UWP app that needs to be able to discovery bluetooth devices (Not BLE) on the network and ones that have been previously connected to/paired.
Im sure anyone who is new to this task will have quickly found the documentation and example are of little help. I have learned more from Stackoverflow questions about peoples experimentations than from the docs and examples, but anyways.
My main question/problem is this: After setting up the device watcher to find bluetooth devices I found that I consistently get multiple additions of the same device but having a different bluetooth address (this is a device that was previously paired but not live on the network). After much investigate and brainstorming, we discovered that each device id is actually a pairing of the devices MAC address and the BT receivers MAC address.
The reason I was getting 3 device additions per 1 physical device is because I have connected to that same device with 3 different BT receiver dongles in the past. So my question is, is there anyway to make the device watcher return the device that corresponds to the currently active BT receiver dongle?
Otherwise I will need to find the currently active BT receivers MAC address and filter out the devices that do not have this, because otherwise the user will see 3 identical devices to select and only 1 of them will pass while the other 2 will fail.
While on this subject I would also like to mention that the device properties dont seem to be working. Before creating the watcher, I have a list of properties like this for example:
...ANSWER
Answered 2021-May-19 at 09:40Update
I found a quick solution that overcomes this problem (although i did find a lot more problems with the device watcher but that is probably a topic for another question).
For now I simply get the current BT adaptors MAC address and then check each incoming device if it has this MAC address in its pair. If it does not that means the device is paired with an old/unused BT adaptor.
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