jodd.util
Class MathUtil

java.lang.Object
  jodd.util.MathUtil

public class MathUtil
extends java.lang.Object

Various math utilities.

Constructor Summary

MathUtil()

Method Summary

static long	factorial(long x) Calculates factorial of given number.
static boolean	isEven(int x) Returns true if a number is even.
static boolean	isOdd(int x) Returns true if a number is odd.
static int	parseDigit(char digit) Converts char digit into integer value.
static int	randomInt(int min, int max) Generates pseudo-random integer from specific range.
static long	randomLong(long min, long max) Generates pseudo-random long from specific range.

Methods inherited from class java.lang.Object

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

Constructor Detail

MathUtil

public MathUtil()

Method Detail

parseDigit

public static int parseDigit(char digit)

Converts char digit into integer value. Accepts numeric chars (0 - 9) as well as letter (A-z).

randomLong

public static long randomLong(long min,
                              long max)

Generates pseudo-random long from specific range. Generated number is great or equals to min parameter value and less then max parameter value. Uses Math.random().

Parameters:

min - lower (inclusive) boundary

max - higher (exclusive) boundary

Returns:

pseudo-random value

randomInt

public static int randomInt(int min,
                            int max)

Generates pseudo-random integer from specific range. Generated number is great or equals to min parameter value and less then max parameter value. Uses Math.random().

Parameters:

min - lower (inclusive) boundary

max - higher (exclusive) boundary

Returns:

pseudo-random value

isEven

public static boolean isEven(int x)

Returns true if a number is even.

isOdd

public static boolean isOdd(int x)

Returns true if a number is odd.

factorial

public static long factorial(long x)

Calculates factorial of given number.