# A little problem with the speed for 'Summing Digits'

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Is it possible for writing this programming without using Original function..?

this is the example:

f( n ) = 1+2+3+4+5+6+7+8+9+2 = 47

f(f( n )) = 4+7 = 11

f(f(f( n ))) = 1+1 = 2

g( 1234567892 ) = 2

And this is my script below,

but I used two Func >> StringMid & StringLeft

```Local \$step = 0
\$xx = InputBox("", "")

while 1
\$s1 = _StrLen(\$xx)
\$xx = _LoopAccumulator(\$s1)
\$step += 1
If _strlen(\$xx) == 1 Then
ExitLoop
EndIf
WEnd

MsgBox(0, "", \$xx & @CRLF & \$step & " STEP")

Func _LoopAccumulator(\$x)
Local \$s = 0
For \$i = 1 To \$x
\$s += StringMid(\$xx, \$i, 1)
Next
Return \$s
EndFunc

Func _StrLen(\$char)
Local \$i = 0
Do
\$i += 1
\$chr = StringLeft(\$char, \$i)
\$n = \$chr
Until \$n == \$char
Return \$i
EndFunc```
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• Moderators

Underdogger,

I would do it this way - no point in making it recursive:

```\$sNumbers = "1239"

Do
\$sNumbers = _Summer(\$sNumbers)
Until StringLen(\$sNumbers) = 1

ConsoleWrite(\$sNumbers & @CRLF)

Func _Summer(\$sInit)

\$aSplit = StringSplit(\$sInit, "")
\$iTotal = 0
For \$i = 1 To \$aSplit[0]
\$iTotal += \$aSplit[\$i]
Next
ConsoleWrite(\$iTotal & @CRLF)
Return String(\$iTotal)

EndFunc```

M23

Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind

Open spoiler to see my UDFs:

Spoiler

ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area

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I'd do it all in one run:

```Local \$aValues[6] = [1234567892, 12345, "87564", 16418961607, -5889740361, "123.456"]

For \$numb In \$aValues
ConsoleWrite("The sum of the absolute value of the integer part of " & \$numb & " is " & _DigitSum(\$numb) & @LF)
Next

Func _DigitSum(\$value)
\$value = Abs(Int(\$value))
ConsoleWrite(\$value & @LF)
Local \$aDigits = StringSplit(\$value, '', 2)
Local \$iSum = 0
ConsoleWrite(\$iSum & ' + ' & \$digit & " --> ")
\$iSum += \$digit
ConsoleWrite(\$iSum & " --> ")
If \$iSum > 9 Then \$iSum = Mod(\$iSum, 10) + 1
ConsoleWrite(\$iSum & @LF)
Next
Return(\$iSum)
EndFunc```

Geez, which idol should I implore to have tabs being kept verbatim in AutoIt code blocks?

Edited by jchd

This wonderful site allows debugging and testing regular expressions (many flavors available). An absolute must have in your bookmarks.
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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