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.
Find the longest sequence of 1's in a binary sequence.
Back to basics 10 - Max Float
Get the length of a given vector
The 5th Root
Reindex a vector
Kurchan 5x5 - Optimal Score
Exponents in Factorials
Breaking Out of the Matrix
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