How to remove consecutive duplicates ?

for ex, step1=[{1}, {7,8}, {2}, {2}, {5}} I want my output to be step2=[{1}, {7,8}, {2}, {5}] Can anyone help me?

Answer 1

[Pawel Jastrzebski]

Consider the following example:

ConsecDuplic  = [1 2 2 3 4 5 5 5 6 7 8 9 9]

% Logical vector:
% check if next value is the same as previous one

LV = [false ConsecDuplic(2:end) == ConsecDuplic(1:end-1)]
NoDuplic = ConsecDuplic(~LV)

[Govind Narayan Sahu]

Thanks it worked. Easy to implement...