Databases
StackOverflow2013
Postsdbo
POhow to std::sort a 3 dimensional vector
Body
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POhow to std::sort a 3 dimensional vector
    text
    copied!<p>I have a vector declared as follow : </p> <pre><code>vector&lt;vector&lt;vector&lt;int&gt; &gt; &gt; myVector (148995,vector&lt;vector&lt;int&gt; &gt;(7,vector &lt;int&gt;(6,0))); </code></pre> <p>I would like to be able to use std::sort to sort it.</p> <p>I want to sort all the value of y by the value of y = 5 in Myvector[x][y][z] </p> <p>I would like to be able to sort one z at a time (z value can be from 0 to 5 ), i have tried to sort it as an independent 2d vector and only have Myvector[x][y] but I always get compile error while doing so.</p> <p>I have found this code on another stackoverflow question that works for 2d vector but my limited programming skills do not let me convert it for a 3d vector : </p> <pre><code>std::sort(myVector.begin(), myVector.end(), [](const std::vector&lt; int &gt;&amp; a, const std::vector&lt; int &gt;&amp; b){ return a[1] &gt; b[1]; } ); </code></pre> <p>thank you, Kaven</p> <p><strong>edit</strong></p> <pre><code>myVector[x][y][z] Myvector[x] = {0,1,2,3,...,200 000} myvector[0][y][0] = {44,30,21,15,1,600,25} myvector[1][y][0] = [25,24,10,7,1,700,30} myvector[0][y][2] = {34,20,11,6,1,400,25} myvector[1][y][2] = [33,24,10,7,1,300,40} </code></pre> <p>if i would sort myvector[x][y][z] for all x by the value of y = 5 and sort all 'y' values where z = 0 (z can change from 0 to 5)</p> <p>if i were to use the sort i would like and use it on z = 0 i would get </p> <pre><code>myvector[1][y][0] = {44,30,21,15,1,600,25} myvector[0][y][0] = [25,24,10,7,1,700,30} myvector[0][y][2] = {34,20,11,6,1,400,25} myvector[1][y][2] = [33,24,10,7,1,300,40} </code></pre>
 

Querying!

 
Guidance
An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload