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.
Right and wrong
Find the maximum number of decimal places in a set of numbers
Implement simple rotation cypher
Number of Horns on a unicorn!
Reverse the elements of an array
The cake is a lie...
Break it up! Break it up!
Two fractions, one sum
Reindex a vector
Hackathon - String version
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