程序包 cn.vorbote.commons

类 MathUtil

java.lang.Object

cn.vorbote.commons.MathUtil

public final class MathUtil
extends Object

This util class can make some formal calculation.

方法概要

修饰符和类型	方法	说明
static double	Average(Collection<? extends Number> numbers)	Get the average value of the numbers
static long	Factorial(int n)	Calc the factorial of n
static boolean	IsBetween(Number num, Number noLess, Number noGreater)	Check the num whether is between the noLess and noGreater number
static double	Sum(Collection<? extends Number> numbers)	Get the sum of the numbers

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

方法详细资料

Factorial

public static long Factorial(int n)

Calc the factorial of n

参数:

n - The number N should greater or equal to 0

返回:

The result of factorial n

抛出:

RuntimeException - The n should greater or equal to 0

Sum

public static double Sum(Collection<? extends Number> numbers)

Get the sum of the numbers

参数:

numbers - The numbers

返回:

The sum value of the numbers

Average

public static double Average(Collection<? extends Number> numbers)

Get the average value of the numbers

参数:

numbers - The numbers

返回:

The average value of the numbers

IsBetween

public static boolean IsBetween(Number num,
                                Number noLess,
                                Number noGreater)

Check the num whether is between the noLess and noGreater number

参数:

num - The number

noLess - The num should not less than this number.

noGreater - The num should not bigger than this number.

返回: