See my function "seqle" on FileExchange. It may not be as compact, but it's easy to use and both encodes and decodes.
The problem statement would have been clearer if the principle of RLE had been explained with an encoding example first. Alternatively, it would have been useful to explicitly mention that the data in vector x is being read pairwise.
ugly but more fun than loops!
note: repelem did not exist back when this problem was created
not limited to 1-9
This is my favourite
Best score without regexp
Which values occur exactly three times?
Project Euler: Problem 7, Nth prime
Back to basics 13 - Input variables
The Answer to Life, the Universe, and Everything
Generate a NaN...on purpose
The Goldbach Conjecture
Select every other element of a vector
Make the vector [1 2 3 4 5 6 7 8 9 10]
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