The sub-arrays tag has no wiki summary.
7
votes
5answers
142 views
Create new array using content of other arrays in C#
I would like to know the most efficient way of creating new arrays from the content of other arrays.
I have several arrays of strings of the type:
public readonly string[] Taiwan = { "TW", "TWO" };
...
2
votes
2answers
777 views
Finding sub-array sum in an integer array
Given an array of N positive integers. It can have n*(n+1)/2 sub-arrays including single element sub-arrays. Each sub-array has a sum S. Find S's for all sub-arrays is obviously O(n^2) as number of ...
0
votes
1answer
30 views
Get integer value/position for keys in the sub array of a multi-dimensional array
I have multi-dimensional array where I'm trying to output an integer value for the keys in the second array (sub array).
My array is pretty basic, like this:
$array = array(
array(
'a' ...
0
votes
1answer
92 views
Intersection of maximum and minimum subarrays
Suppose we have an array of some integers (can be both +ve and -ve).
We find non-empty maximum and minimum subarrays(subarrays have successive elements only) from this.
My claim is that these ...
1
vote
1answer
72 views
Numpy savetxt loop
Using Numpy, I am going to split an array of dimension (557124,2), dtype = "S10", in 6 subarrays using
sub_arr = np.split(arr, 6)
Now I would like to use a for loop on save.txt and save the 6 ...
0
votes
1answer
117 views
C# Efficient Tree Argument Recursion, Efficient sub-array or sub-list
I have an in-memory tree structure, resembling a directory tree. That is: each node has a dictionary of named subnodes. I want an efficient method of traversing the tree, from a list or array of ...
0
votes
2answers
49 views
actionscript arrays merge
I posted my problem a few hours ago, but I think I figured out how to ask my question in a more comprehensible way.
This is my code:
// 1. Intro
var introPL1:Array = ...
0
votes
3answers
61 views
actionscript remove (concat?) sub-arrays
I have multiple sub-arrays in one huge array - MasterArray- meaning that the sub-arrays are already INSIDE the MasterArray. I would like to "fuse" all of those sub-arrays - to remove those [ ] square ...
0
votes
1answer
57 views
Can only one element of an array make a subarray?
I am not clear about subarray.
suppose: A[3]={1,2,3}
Can 1,2 and 3 individually be subarrays of A?
3
votes
1answer
337 views
Maximum K sub-arrays sum
I'm having trouble dealing with memoization and the bottom up approach algorithm for this problem:
suppose you have an array of elements xi such that -10000 < xi < 10000 ,for all 0 < i < ...
1
vote
4answers
89 views
Join rest of string array
private static string SetValue(string input, string reference)
{
string[] sentence = input.Split(' ');
for(int word = 0; word<sentence.Length; word++)
{
if ...
0
votes
2answers
152 views
PHP foreach not working with sub-array
Ok I need to work out how to do I get the following to work.
I have an array with sub-array
array (
'session' => '1359964785.85203874781',
'status' => 'cart',
'items' =>
array (
...
mongodb
0
votes
1answer
282 views
MongoDB $addToSet not working
I am not sure why but I am having a really hard time getting the $addToSet working for my sub array items
This is what it should look like
{
"items": [
{
"id": ...
0
votes
2answers
164 views
Find 2 continuous blocks of Array with largest sum. Return their sum
The blocks cannot overlap. Nor can they be adjacent. Assume length of A is > 2.
I know this is very similar to finding the sum of max subarray, and can be done in linear time.
I'm also pretty sure ...
0
votes
2answers
110 views
php make set of subarrays from subarray keys
i have an array like follows with a varying number of top level arrays:
Array
(
[1534] => Array
(
[userid] => 1534
[a1] => 3
[a2] => 6
...
