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topten

List of words in a random order (no repeat)

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topten

I have a list of words:  Black, Blue, Red, Brown, Yellow

I need each time to generate a new list in a random order   Blue, Brown, Yellow, Red, Black and another time it should be generated in a different way Brown, Yellow, Red, Blue, Black. What is the best way to achieve it?

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topten

I have found this function though

Func _GenerateRandomNumbers($iGenerateNums, $iMaxEachNum, $iMinEachNum=0)
    If $iGenerateNums > ($iMaxEachNum - $iMinEachNum) + 1 Then Return SetError(1, 0, 0)

    Local $aRandom[$iGenerateNums]

    For $i = 0 To $iGenerateNums-1
        While 1
            $aRandom[$i] = Random($iMinEachNum, $iMaxEachNum, 1)

            For $j = 0 To $iGenerateNums-1
                If $j = $i Then ContinueLoop
                If $aRandom[$j] = $aRandom[$i] Then ContinueLoop 2
            Next

            ExitLoop
        WEnd
    Next

    Return $aRandom
EndFunc

 

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jchd

Do you want a random order at every invokation of the function (which may give a previously provided result) or a random order with guarantee that the new result hasn't already appeared?

Is your list an array and do you expect an array as result?

Possible functions to use: _ArrayShuffle(), _ArrayCombinations(), _ArrayPermute()

 


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Melba23

topten,

Put the items into an array and use _ArrayShuffle:

#include <Array.au3>

Global $aArray_Base[5] = ["Black", "Blue", "Red", "Brown", "Yellow"]

While 1
    $aArray = $aArray_Base
    _ArrayShuffle($aArray)
    _ArrayDisplay($aArray, "Shuffled", Default, 8)
WEnd

M23

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jchd

Another possibility as explained in my previous post: randomly select one of the N! permutations of the N elements. M23 code may and will displayed previously given results when run forever, while this code is sure to never repeat (but obviously has finite number of permutations to display).

Local $aArray_Base = ["Black", "Blue", "Red", "Brown", "Yellow"]

;~ While 1
;~  $aArray = $aArray_Base
;~  _ArrayShuffle($aArray)
;~  _ArrayDisplay($aArray, "Shuffled", Default, 8)
;~ WEnd

Local $aPerm = _ArrayPermute($aArray_Base, '|')
MsgBox(0, "", "Displaying the " & $aPerm[0] & " permutations randomly")
_ArrayDelete($aPerm, 0)
_ArrayShuffle($aPerm)
For $s In $aPerm
    _ArrayDisplay(StringSplit($s, '|', 2), "Next permutation", Default, 8)
Next

 


This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.
Another excellent RegExp tutorial. Don't forget downloading your copy of up-to-date pcretest.exe and pcregrep.exe here
RegExp tutorial: enough to get started
PCRE v8.33 regexp documentation latest available release and currently implemented in AutoIt beta.

SQLitespeed is another feature-rich premier SQLite manager (includes import/export). Well worth a try.
SQLite Expert (freeware Personal Edition or payware Pro version) is a very useful SQLite database manager.
An excellent eBook covering almost every aspect of SQLite3: a must-read for anyone doing serious work.
SQL tutorial (covers "generic" SQL, but most of it applies to SQLite as well)
A work-in-progress SQLite3 tutorial. Don't miss other LxyzTHW pages!
SQLite official website with full documentation (may be newer than the SQLite library that comes standard with AutoIt)

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