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
Finding Perfect Squares
Is A the inverse of B?
Set some matrix elements to zero
Remove element(s) from cell array
Natural numbers in string form
Find the two-word state names
Connect Four Win Checker
Find the peak 3n+1 sequence value
Tic Tac Toe FTW
Find the palindrome
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