Java Utililty Methods Factorial

List of utility methods to do Factorial

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Description

The list of methods to do Factorial are organized into topic(s).

Method

doublefactorial(double n)
This will return the factorial of the given number n. 
if (n == 1 || n == 0)
    return 1;
for (double i = n; i > 0; i--, n *= (i > 0 ? i : 1)) {
return n;
doublefactorial(double n)
factorial 
if (n < 0.0)
    throw new Error("Can not compute the factorial of a negative number");
if (n <= 1.0)
    return 1.0;
if (n <= 4.0) {
    int floor = (int) Math.floor(n);
    int ceil = (int) Math.ceil(n);
    if (floor == ceil)
...
intfactorial(final int a)
factorial 
int factorialVal = 1;
for (int i = 2; i <= a; i++) {
    factorialVal = factorialVal * i;
return factorialVal;
longfactorial(final long value)
Takes the factorial of a value. 
long fac = 1;
for (int i = 0; i < value; i++) {
    fac *= (value - i);
return fac;
doublefactorial(int c)
factorial 
if (c < 0)
    throw new IllegalArgumentException("Can't take the factorial of a negative number: " + c);
if (c == 0)
    return 1;
return c * factorial(c - 1);
intfactorial(int i)
factorial 
return f[i];
intfactorial(int input)
factorial 
int output;
switch (input) {
case 0: {
    output = 1;
    break;
case 1: {
    output = 1;
...
longfactorial(int integer)
Compute the factorial of an integer 
if (integer < 1) {
    return 0;
if (integer < 3) {
    return integer;
long factorial = integer;
integer--;
...
longfactorial(int n)
Computes n!. 
if (n == 0)
    return 1;
long fact = n;
for (int i = n - 1; i > 1; --i)
    fact *= i;
return fact;
intfactorial(int n)
Standard factorial calculation. 
if (n == 0)
    return 1;
int fact = 1;
for (int i = 1; i <= n; i++)
    fact *= i;
return fact;