kandi X-RAY | arr Summary
kandi X-RAY | arr Summary
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Top functions reviewed by kandi - BETA
- Returns channels list
- Generate Channel List
- Get parent channel
- Get categories .
- Filters array by keys
- Return a channel list
- Get channel level
- Describe an array
- Get a value from an array using dot notation
- Set a value in an array .
arr Key Features
arr Examples and Code Snippets
Lines of Code : 71License : Permissive (MIT)
Copy$d=['a'=>1,'b'=>2];
Arr::get($d,'c','没有数据哟');
$d = ['web' => [ 'id' => 1, 'url' => 'lnmp.org.cn' ]];F
Arr::get($d,'web.url');
$d = ['id' => 1,'url' => 'lnmp','name'=>'ken'];
print_r(Arr::getExtName($d,['id','url']));
$data def fibonacci_search(arr: list, val: int) -> int:
"""A pure Python implementation of a fibonacci search algorithm.
Parameters
----------
arr
List of sorted elements.
val
Element to search in list.
Returns
public static int subSet(int[] arr) {
int n = arr.length;
int sum = getSum(arr);
boolean[][] dp = new boolean[n + 1][sum + 1];
for (int i = 0; i <= n; i++) {
dp[i][0] = true;
}
for (int j def kadanes(arr: list) -> int:
"""
If negative_exist() returns 0 than this function will execute
else it will return the value return by negative_exist function
For example: arr = [2, 3, -9, 8, -2]
Initially we set value o Community Discussions
Trending Discussions on arr
QUESTION
I have a store setup that has multiple arrays
I'm trying to search all arrays at once, via a textfield.
I can get this done, by calling a selector function on keyup, that filters the 4 arrays and pushes to a new array.
I've thought about merging all the arrays to one array before filtering, but I want to keep the results separate, as they are going to be displayed in categories.
Just trying to see if I can streamline the performance at all and if there's a more concise way of doing this, in case I need to do something similar with larger arrays.
my textField function:
...ANSWER
Answered 2021-Jun-15 at 19:16This should implement the selector function with less code and make it more adaptable to kinds of data, if needed you can specify a more precise type in the filter function.
QUESTION
When I use the following code to print all subsets of the string "abc", the code works as expected, printing : ab a b
...ANSWER
Answered 2021-Jun-15 at 19:20array.append() is a function that returns a None value. So in the first recursive call, you pass a None value instead of the appended array as you'd want. Here's a solution:
QUESTION
I'm trying to parallelize a merge-sort algorithm. What I'm doing is dividing the input array for each thread, then merging the threads results. The way I'm trying to merge the results is something like this:
...ANSWER
Answered 2021-Jun-15 at 01:58I'm trying to parallelize a merge-sort algorithm. What I'm doing is dividing the input array for each thread, then merging the threads results.
Ok, but yours is an unnecessarily difficult approach. At each step of the merge process, you want half of your threads to wait for the other half to finish, and the most natural way for one thread to wait for another to finish is to use pthread_join(). If you wanted all of your threads to continue with more work after synchronizing then that would be different, but in this case, those that are not responsible for any more merges have nothing at all left to do.
This is what I've tried:
QUESTION
I have the following digits:
...ANSWER
Answered 2021-Jun-15 at 18:03You can create temporary dictionary to group the digits:
QUESTION
Let's say I have a list of strings
...ANSWER
Answered 2021-Jun-15 at 16:52You can make use of the as const TypeScript syntax (See doc).
QUESTION
In my app I want the user to mention how many columns he wants for the table and then enter the data for those columns and create a table with those values. Here is what I have:
...ANSWER
Answered 2021-Jun-15 at 15:01You can name your input-fields as an array like:
And get it with var_dump($_POST['col_name']);
In your example you could do like this:
QUESTION
I am trying to divide merged information from one cell into separate cells.
one cell:
amount:2 price:253,18 price2:59,24 EU status:WBB NAS MRR OWA PXA min:1 opt:3 category: PNE code z:195750divided data: (I want to export each part into another cell)
amount:2 price:253,18 price2:59,24 EU status:WBB NAS MRR OWA PXA min:1 opt:3 category: PNE code z:195750I can't simply divide by finding empty space, status cell which is case-sensitive | status:WBB NAS MRR OWA PXA| has a different data range with spaces that can't be divided.
Split ( expression [,delimiter] [,limit] [,compare] )
...ANSWER
Answered 2021-May-24 at 11:44As the order is the same one way is to simply search for adjacent key names & parse out whats in-between:
QUESTION
I have an array of objects. I want to keep the objects with ID: 0 but remove the duplicates from the array where id > 0.
...ANSWER
Answered 2021-Jun-15 at 13:15QUESTION
I have a list [A,B,C,D,E] and a list of indexes [3,2,0,4,1] but the indexes actually points to itself, giving the order to follow.
So starting at 0, next index is 3, then at index 3, the next index is 4,1,2,0 etc.
I can achieve this by looping and updating the index, but my list may have thousands of points, Is there a way to avoid loops and vectorize this?
my code:
...ANSWER
Answered 2021-Jun-15 at 12:46What you're trying to do looks to me like a depth first search in the graph where each node is a number from 0 to n-1 (n = 5 in your example) with a single outgoing edge to the next index it points to. The python solution is already pretty efficient, but if you want something pre-made I think scipy has the solution:
QUESTION
I am solving this problem on dynamic array in which input first line contains two space-separated integers,n, the size of arr to create, and q, the number of queries, respectively.
Each of the q subsequent lines contains a query string,queries[i]. it expects to return int[]: the results of each type 2 query in the order they are presented.
i tried to attempt as below and my code seems fine to me but it gives segmentation fault error. please help me where I am getting conceptually wrong. thanks.
problem: Declare a 2-dimensional array,arr , of n empty arrays. All arrays are zero indexed.
Declare an integer,last answer , and initialize it to zero.
There are 2 types of queries, given as an array of strings for you to parse:
Query: 1 x y
Let idx=((queries[i][1]^last_answer)%n);.
Append the integer y to arr[idx].
Query: 2 x y
Let idx=((queries[i][1]^last_answer)%n);.
Assign last_answer=arr[idx][queries[i][2]%(arr[idx].size())] .
Store the new value of last_answer to an answers array.
input: 2 5
1 0 5
1 1 7
1 0 3
2 1 0
2 1 1
output:
7
3
...ANSWER
Answered 2021-Jun-15 at 11:25You are accessing elements of vector without allocating them.
resize() is useful to allocate elements.
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PHP requires the Visual C runtime (CRT). The Microsoft Visual C++ Redistributable for Visual Studio 2019 is suitable for all these PHP versions, see visualstudio.microsoft.com. You MUST download the x86 CRT for PHP x86 builds and the x64 CRT for PHP x64 builds. The CRT installer supports the /quiet and /norestart command-line switches, so you can also script it.
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