Package io.keikai.doc.collab.lib0

Class PRNG

java.lang.Object

io.keikai.doc.collab.lib0.PRNG

public class PRNG
extends Object

Fast Pseudo Random Number Generators.

Given a seed a PRNG generates a sequence of numbers that cannot be reasonably predicted. Two PRNGs must generate the same random sequence of numbers if given the same seed. K-Note: Use SecureRandom instead

Method Summary

Modifier and Type	Method	Description
static boolean	bool(PRNG gen)
static PRNG	create()
static PRNG	create(int seed)
static int	int32(PRNG gen, int min, int max)
static String	letter(PRNG gen)
static long	long53(PRNG gen, long min, long max)
double	next()
static String	nextChar(PRNG gen)	original method name: char
static <T> T	oneOf(PRNG gen, List<T> list)
static <T> T	oneOf(PRNG gen, T[] array)
static double	real53(PRNG gen)
static int	uint32(PRNG gen, int min, int max)
static Uint8Array	uint8Array(PRNG gen, int len)
static long	unsignedLong53(PRNG gen, long min, long max)
static String	utf16Rune(PRNG gen)
static String	utf16String(PRNG gen)
static String	utf16String(PRNG gen, int maxlen)
static String	word(PRNG gen)
static String	word(PRNG gen, int minLen, int maxLen)

Methods inherited from class java.lang.Object

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

Method Details

create

public static PRNG create(int seed)

create

public static PRNG create()

next

public double next()

bool

public static boolean bool(PRNG gen)

long53

public static long long53(PRNG gen,
 long min,
 long max)

unsignedLong53

public static long unsignedLong53(PRNG gen,
 long min,
 long max)

int32

public static int int32(PRNG gen,
 int min,
 int max)

uint32

public static int uint32(PRNG gen,
 int min,
 int max)

real53

public static double real53(PRNG gen)

nextChar

public static String nextChar(PRNG gen)

original method name: char

Returns:

letter

public static String letter(PRNG gen)

word

public static String word(PRNG gen)

Parameters:

gen -

Returns:

A random word (0-20 characters) without spaces consisting of letters (a-z)

word

public static String word(PRNG gen,
 int minLen,
 int maxLen)

Parameters:

gen -

minLen -

maxLen -

Returns:

A random word (0-20 characters) without spaces consisting of letters (a-z)

utf16Rune

public static String utf16Rune(PRNG gen)

utf16String

public static String utf16String(PRNG gen)

utf16String

public static String utf16String(PRNG gen,
 int maxlen)

oneOf

public static <T> T oneOf(PRNG gen,
 T[] array)

oneOf

public static <T> T oneOf(PRNG gen,
 List<T> list)

uint8Array

public static Uint8Array uint8Array(PRNG gen,
 int len)