It's very sad that there is no matlab function "npermsk".
Not work for R is long, and k is small.
For example, R = 1:100, k = 2.
@li haitao, the max digital is 9. If length of R great than 10, it is another problem. I think you can submit a problem like this but larger R.
@ Binbin Qi, You're right.
Reverse Run-Length Encoder
Twins in a Window
Compute a dot product of two vectors x and y
Back to basics - mean of corner elements of a matrix
Sums of Multiple Pairs of Triangular Numbers
Singularity v5 (with apologies to the true hack masters)
Hackathon - String version
Sleeping Queens 1
Sums of Distinct Powers
Find the treasures in MATLAB Central and discover how the community can help you!
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