permutation

Function permutation 

Source
pub fn permutation(n: u64, k: u64) -> u64
Expand description

Calculate the number of permutations of n items taken k at a time.

§Arguments

  • n - The total number of items.
  • k - The number of items to choose.

§Panics

If k is greater than n, this function will panic.

§Returns

  • u64 - The number of permutations.