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
Put two time series onto the same time basis
Square Digits Number Chain Terminal Value (Inspired by Project Euler Problem 92)
Sleeping Queens 1
Break it up! Break it up!
Must be in the front row...
A matrix of introverts
Lowest sum from a group of digits
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