[−][src]Function number_encoding::combination
pub fn combination(n: usize, k: usize) -> usize
Returns the number of k
-combinations of a set of n
elements.
See wikipedia for more information.
Examples
assert_eq!(combination(4, 0), 1); assert_eq!(combination(4, 1), 4); assert_eq!(combination(4, 2), 6); assert_eq!(combination(4, 3), 4); assert_eq!(combination(4, 4), 1); assert_eq!(combination(4, 5), 0);