
How to assign a particular row of two dimensional array passed as an argument of the function to onedimensional vector in c++ 
by Ertaz in C & C++ & C# 

This is what I do, but I get segmentation fault when I debug (Step Into
> v.assign() is the problem. void
vertex::sort_all_neighbours(int i, int **array, int size_array){ v.reserve(size_array); v.assign(&array[i][0],
&array[i][size_array1]); //for (j = 0; j < size_array; j++)
v[j] = array[i][j]; make_heap(v.begin(), v.end()); sort_heap(v.


Convert SingleDimensional array with child/parent relationships to MultiDimensional Tree in PHP 
by Chunkee in PHP 

I'm trying to write an algorithm to do the following: In
PHP/Postgres, I'm returning a 1dimensional array from the database, and
each row has a view_page_id as well as a view_page_parent_id. I've done a
selfjoin on the table, and am returning the results sorted ASC by
parent_id. Here's an example: Array (
[0] => Array (

Creating a three dimensional jagged array to store two dimensional arrays of varying size in java 
by Darren Torpey in Java 

Say I have less than ten two dimensional arrays representing matrices in
java. Each array is enumerated from 0 to 6. Each array is n*2^enumval
larger where n is the number of elements from the 0th enumerated array,
thus my multidimensional will almost be pyramid shaped, hence the need for
a jagged three dimensional array. Is it possible to create a jagged three
dimensional array?

matlab  creating a single dimensional array from two dimensional parts 
by Miklebud in Programming Languages 

hi i have the following situation h = [0,1,1,1; 0,0,0,0; 1,1,1,1];
i'll
check incoming values which can range between 0 and rowsize of h, i.e. in
this case 2,. so my options are 0,1,2. now i want to create a
single dimensional array (let's name it j) as follows whenever
the incoming value is 0 <

How can i create a onedimensional array to hold several twodimensional arrays? 
by Lucas Thompson in Programming Languages 

I have a game I've been working on. It is a text based RPG adventure
game. I hope to have the player navigate the world using simple text
commands. I have set it up so that the world should be divided into
"regions" or arrays. Each region is of the custom datatype Location and is
composed of a twodimensional array. I will use two variables to track the
players location which are really the two

Finding dimensional index in a multidimensional array in R 
by Idontcare in Programming Languages 

Am looking at say 3dimensional array M:
M<dim(3,3,3) I want to find an efficient way
to populate M with the following rule: M[i,j,k] = i/10 + j^2 +
sqrt(k), ideally without having to write a loop with a
for statemenet. For clarification, there is a
simple way to accomplishing this if M were 2dimensional. If i wanted to
hav

How to convert single dimensional arrays to multi dimensional ones? (C#) 
by bdurbin in Programming Languages 

I have to use a method which accepts double[,], but I only have a
double[]. How can I convert it? Solution so far: var array = new double[1, x.Length]; foreach (var i in
Enumerable.Range(0, x.Length)) { array[0, i] = x; }

assigning one row of a two dimensional array to a one dimensional matrix 
by rubyonrails in Programming Languages 

So I have a 2D array and I want to assign row 'pth' row of the 2D array
to a new 1D array: My code looks like this: float
temp[] = { *aMatrix[p] }; // aMatrix is a 10x10 array
// am trying to assign the pth row
// to temp. *aMatrix[p] = *aMatrix[max]; *aMatrix[max] = *temp; float t = b

C: twodimensional array slower then singledimensional? 
by Ansari in Programming Languages 

I thought, that if singledimensional is implemented somehow like
a[i]=*(a+i),
so a[i][j] must be
*(a+i*ROWSIZE+j)
Am I wrong? Read here http://habrahabr.ru/blogs/algorithm/135948/ Думаю, не стоит говорить о том, что
одномерный массив быст

Getting single dimensional array, not multi dimensional 
by fstender in Web Design 

When I run [w*2 for w in [1, 2, 3]]
I get [[2, 4, 6]]
but actually I
want [2, 4, 6]
Live example Obviously following is in option, but I do not want to rely on
that: [w*2 for w in [1, 2, 3]][0]

