Random

Min	[可选] 随机数的最小值,默认为 0.
Max	[可选] 随机数的最大值,默认为 1.
Flag	[可选] 设为 1, 则返回整数,默认返回浮点数.

成功:	返回最小值与最大值之间的伪随机数.
失败:	@error 设置为非 0 值.

其结果在取整数时, 返回值在最小值及最大值之间, 包含最小, 最大值(取浮点数时可以缺少"最大值"参数).

如果最小和最大值相同, 则本函数将返回那个值 - 这种情况下 @error 标志不会被设置

由 Takuji Nishimura, Makoto Matsumoto, Shawn Cokus, Matthe Bellew 与 Isaku Wada 编写.

Mersenne Twister 算法用于生成随机数. 设计考虑了其它各种发生器的缺点.

产生随机数的速度也挺快; 它避免了乘法和除法的使用, 同时还很好地利用了缓冲和管道.

如果满足以下条件, 则允许以源代码格式或二进制格式, 经过修改或不经修改, 进行再分发和使用:

1. 再分发源代码时,必须保留上述版权说明,此条件列表和以下免责声明.

2. 以二进制格式再分发必须在文档和/或随分发版本一起提供的其他资料中复制上述版权说明, 此条件列表和以下免责声明.

3. 没有专门的事先书面许可,不得用贡献者的姓名来签署或宣传由此软件衍生的产品.

此软件由版权拥有者和贡献者"照原样"提供. 对于任何明示或暗示的担保, 包括但不限于对商业可行性, 针对特定用途的适用性的暗示担保, 我们均不负责.

#include <MsgBoxConstants.au3>
; Flip a coin.
Example()
Func Example()
    If Random(0, 1, 1) Then ; Return an integer between 0 and 1.
        MsgBox($MB_SYSTEMMODAL, "", "The side of the coin was: Heads") ; If the random integer was 1 then heads was thrown.
    Else
        MsgBox($MB_SYSTEMMODAL, "", "The side of the coin was: Tails") ; If the random integer was 0 then tails was thrown.
    EndIf
EndFunc   ;==>Example

#include <MsgBoxConstants.au3>
; Roll a die.
Example()
Func Example()
MsgBox($MB_SYSTEMMODAL, "", "The die landed on number " & Random(1, 6, 1) & ".") ; Return an integer between 1 and 6.
EndFunc ;==>Example

#include <MsgBoxConstants.au3>
; Create a random string of text.
Example()
Func Example()
    Local $sText = ""
    For $i = 1 To Random(5, 20, 1) ; Return an integer between 5 and 20 to determine the length of the string.
        $sText &= Chr(Random(65, 122, 1)) ; Return an integer between 65 and 122 which represent the ASCII characters between a (lower-case) to Z (upper-case).
    Next
    MsgBox($MB_SYSTEMMODAL, "", "The random string of text was: " & $sText) ; Display the string of text.
EndFunc   ;==>Example

#include <MsgBoxConstants.au3>
; Result of when Min and Max are the same value.
Example()
Func Example()
    Local $iRandom = Random(10, 10)
    If @error Then
        MsgBox($MB_SYSTEMMODAL, "", "An error occurred, due to the fact both values are exactly the same: " & $iRandom)
    EndIf
EndFunc   ;==>Example