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
Determine if input is odd
Find the nearest integer
Relative ratio of "1" in binary number
Swap two numbers
Verify Law of Large Numbers
Find the two-word state names
Determine whether a vector is monotonically increasing
Tic Tac Toe FTW
Find state names that start with the letter N
Word Counting and Indexing
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