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
Make the vector [1 2 3 4 5 6 7 8 9 10]
Find the longest sequence of 1's in a binary sequence.
Determine Whether an array is empty
Generate a random matrix A of (1,-1)
Determine whether a vector is monotonically increasing
Extract leading non-zero digit
Word Counting and Indexing
Longest Divisor Run
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Contact your local office