Finding series of repeating numbers in matrix

Hello, I am trying to find begginings and endings of repeating zeros in matrix, eg: for input matrix:

1 0 0 0 0 0 1 1 0 0 1 1 1 0 0 0 0 0 1 1 0 0 0 1 0 0 1

I want to get:

beggining = [2 9 14 21 25]
ending = [6 10 18 23 26]

Does anyone know how to do it?

Answer 1

[Stephen23]

>> V = [1,0,0,0,0,0,1,1,0,0,1,1,1,0,0,0,0,0,1,1,0,0,0,1,0,0,1];
>> D = [V(1)==0,diff(V==0)];
>> find(D>0)
ans =
     2     9    14    21    25
>> find(D<0)-1
ans =
     6    10    18    23    26

[Michael Saniuk]

thanks, it worked!

Answer 2

[Guillaume]

v = [1 0 0 0 0 0 1 1 0 0 1 1 1 0 0 0 0 0 1 1 0 0 0 1 0 0 1]
beginning = strfind([1 v], [1 0])          
ending = strfind([v 1], [0 1])

Despite its name, strfind works with sequence of numbers as well.

[Michael Saniuk]

wow, this works too ^^ thank you