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.
Remove the small words from a list of words.
Find Rotated Substring
Approximation of Pi
Diophantine Equations (Inspired by Project Euler, problem 66)
That's some divisor you've got there...
Community Problem 500!
Unique dice configurations
It's Happy! It's Fun! It's Happy Fun Hyperball!
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