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
First non-zero element in each column
Make an awesome ramp for a tiny motorcycle stuntman
matrix of natural number
Is the input divisible by 3?
Find the peak 3n+1 sequence value
Test for balanced parentheses
Find the longest sequence of 1's in a binary sequence.
Find the palindrome
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