How should I search and also delete in matrix?

Hy It is existing function for searching in the matrix ...?

I have list (numbers) in ([]x3) matrix. The 3rd columns is only 0 or 1. Based on 3rd columns I want to search in the matrix.

for example:

x:       y:       index:
------------------------
 2       4          0
 5       6          0
 7       8          1
....etc

If the 3rd element is 0 then get this element and get the x,y number to the other function for the goal. and also set this 3rd index to 1 (1 that means that was used).

Answer 1

[Jan]

M = [2, 4, 0; ...
     5, 6, 0; ...
     7, 8, 1];
index = (M(:, 3) == 0);
x = M(index, 1);
y = M(index, 2);
...
M(index, 3) = 1;

[x y]

Thank you :)