MATLAB: Finding series of repeating numbers in matrix

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?

Best Answer

>> 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
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