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.
Distance walked 1D
Choose the best fitting dominoes
Find the nearest integer
Oh Zero Zero Zero!!!
Kurchan 4x4 - Optimal score
Still more miles to go before I sleep
How Far Can You Throw Something?
Rewrite setdiff to account for non-unique values
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