org.amino.utility
Class FastRandom

java.lang.Object
  org.amino.utility.FastRandom

public final class FastRandom
extends java.lang.Object

This class provides fast random method. The quality of random number is not as good as standard library. And it's also not thread-safe, which means two threads might get the same random number if data race occurs.

Author:

Zhi Gan (ganzhi@gmail.com)

Method Summary

static int	nextInt(int upper) Generate a pseudo-random integer.
static int	rand() Generate a pseudo-random integer.

Methods inherited from class java.lang.Object

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

Method Detail

rand

public static int rand()

Generate a pseudo-random integer. The range of generated number is [0, 24001)

Returns:

a pseudo-random integer which lies between [0, 24001)

nextInt

public static int nextInt(int upper)

Generate a pseudo-random integer. The range of generated number is [0, upper]

Parameters:

upper - Upper bound of generated random number

Returns:

a pseudo-random integer which lies between [0, min(24001, upper))