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¦^´_ 1# sjgau


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¦^´_ 2# sunnyso


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¦^´_ 3# sjgau

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¥»©«³Ì«á¥Ñ c_c_lai ©ó 2013-10-26 12:23 ½s¿è

¦^´_ 4# sunnyso
VBA Function Example

The RND function can only be used in VBA code in Microsoft Excel.
Here are some examples of what the RND function would return:
  1.     Int ((10 - 1 + 1) * Rnd + 1)     '   ¶Ç¦^¤¶©ó 1 ¨ì 10 ¶¡ªº¶Ã¼Æ­È
  2.     Int ((200 - 100 + 1) * Rnd + 100)   '  ¶Ç¦^¤¶©ó 100 ¨ì 200 ¶¡ªº¶Ã¼Æ­È
  3.     Int ((600 - 300 + 1) * Rnd + 300) '  ¶Ç¦^ ¤¶©ó 300 ¨ì 600 ¶¡ªº¶Ã¼Æ­È
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For example:
  1. Sub Demo()
  2.     Dim retNum As Integer

  3.     retNum = Int ((300 - 200 + 1) * Rnd + 200)
  4.     MsgBox "retNum ªº¶Ã¼Æ­È = " & retNum
  5. End Sub
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In this example, the variable called retNum would now contain a random number between 200 and 300.

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¦^´_ 6# sjgau


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http://en.wikipedia.org/wiki/Linear_congruential_generator

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R(n)= (R(n-1)*A + B) MOD C

A= 7^5= 16807,
B= 0
C= (2^31) - 1 = 2147483647
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¦^´_ 8# sjgau

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¦^´_ 9# sunnyso


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