Return double factorial
n(n-2)...(5)(3)(1), n>0, odd
n!! = n(n-2)...(6)(4)(2), n>0, even
1 , n = -1, or n = 0
6!! = (6)(4)(2) = 48
Neither n = -1, nor n = 0 are tested.
Back to basics 22 - Rotate a matrix
Rotate input square matrix 90 degrees CCW without rot90
Sophie Germain prime
kmph to mps
Even or Odd
Challenging perms function!
Mean = Standard Deviation
Cryptography with A Square Matrix : Encoding
Repeat string n times - 2
Digit concentration in Champernowne's constant
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