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
Choose the best fitting dominoes
Count up then down
Maximum value in a matrix
Matlab Basics - Rounding I
Finding Perfect Squares
Find the peak 3n+1 sequence value
Make a Palindrome Number
Swap the first and last columns
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