I have a set of values as
G=[1 1 1 1 2 2 1 2 3 2 2 1 3 3]
in this there are 14 values,i want to fetch as following
there are 4 ones continously so i want to take first 1 ,then 2 2's continously ,i need first 2 ,then only 1 ,so i need to take that
So the output will be [1 2 1 2 3 2 1 3] with index positions [1 5 7 8 9 10 12 13]
kindly help
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