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.
Determine whether a vector is monotonically increasing
Sum of first n terms of a harmonic progression
How many trades represent all the profit?
Say something funny
Some Assembly Required
Must be in the front row...
Muphry's Law of MATLAB
Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Contact your local office