MATLAB: I want to sort a data like this as given below

sort

0 0 3 4 5 0 0 0 0 10 11 12 13 14 15 0 0 0 0 20 21 22 0 0 0 is the data in which i have to subtract (5-3),(15-10),(22-20) can anybody tell me how to do it

Best Answer

This code locates the beginning and end values of any non-zero sequence, and calculates their differences:
>> X = [0,0,3,4,5,0,0,0,0,10,11,12,13,14,15,0,0,0,0,20,21,22,0,0,0];
>> Y = diff([0,X,0]>0);
>> X(Y(2:end)<0) - X(Y(1:end-1)>0)
ans =
     2     5     2
Have a look at X(Y(2:end)<0) and X(Y(1:end-1)>0) if you want to know how this works.
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