public final class BigIntegerUtils extends Object
BigInteger
.Modifier and Type | Method and Description |
---|---|
static BigInteger |
combination(int n,
int k)
Compute the combination function or the binomial coefficient.
|
static BigInteger |
factorial(int n)
Compute the n factorial.
|
static BigInteger |
permutation(int n,
int k)
Compute the permutation function.
|
public static BigInteger factorial(int n)
n
- an integern!
public static BigInteger combination(int n, int k)
n
- the size of the full setk
- the size of a combinationn! / (n-k)! / k!
public static BigInteger permutation(int n, int k)
n
- the size of the full setk
- the size of a permutationn! / (n-k)!
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