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
Create a cell array out of a struct
Project Euler: Problem 10, Sum of Primes
Set some matrix elements to zero
02 - Vector Variables 3
Make a checkerboard matrix
Remove the small words from a list of words.
Indexed Probability Table
Select every other element of a vector
Back and Forth Rows
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