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.
Make one big string out of two smaller strings
Choose the best fitting dominoes
Rotate and display numbered tile
Replace multiples of 5 with NaN
Get all prime factors
Kurchan 5x5 - Optimal Score
Still more miles to go before I sleep
Three...is a magic number.
Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.
What digit is it?
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