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.
Swap the first and last columns
Back to basics 9 - Indexed References
Get the elements of diagonal and antidiagonal for any m-by-n matrix
Operate on matrices of unequal, yet similar, size
Converting binary to decimals
Make one vector from two others
Miles to go before I sleep
Two fractions, one sum
Now 20% off!
I'm going to enjoy watching you calculate, Mr Anderson
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