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
Test if a Number is a Palindrome without using any String Operations
Back to basics 21 - Matrix replicating
Set some matrix elements to zero
Number of Horns on a unicorn!
Given area find sides
Tic Tac Toe FTW
Return the 3n+1 sequence for n
Given two strings, find the maximum overlap
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