# Help with 2D array

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Hello,

I have a 2D array with made in this way

I need to check for:

• Duplicate, but only for the name-surname field
• Unique value.

Assuming this is the name surname field:

AA (avoid)

AA (take this, last duplicate)

BB (take this)

CC (take this)

DD (avoid)

DD (avoid)

DD (take this)

EE (take this)

ecc

I need to get always the last in case of duplicate and the unique value, mading another array. I'll hope i was clear enought. Some help with this? I have try to check but is complicated for me. Thanks

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• Moderators

HeyTom,

Welcome to the AutoIt forums.

Something like this should do the trick:

```#include <Array.au3>

Global \$aArray[][] = [["AA", "-"], _
["AA", "+"], _
["BB", "+"], _
["CC", "+"], _
["DD", "-"], _
["DD", "-"], _
["DD", "+"], _
["EE", "+"]]

For \$i = UBound(\$aArray) - 1 To 1 Step -1
\$sCurrent = \$aArray[\$i][0]
; Look for earlier duplicates
For \$j = \$i - 1 To 0 Step -1
If \$aArray[\$j][0] == \$sCurrent Then
; Clear the line - many options to do this for the real array
\$aArray[\$j][0] = ""
Else
; Stop looking
ExitLoop
EndIf
Next
\$i = \$j + 1

;Just for testing
;_ArrayDisplay(\$aArray, \$i & " - " & \$j, Default, 8)

Next

; Now you have the values you need and can rewrite the array as necessary
_ArrayDisplay(\$aArray, "Ended", Default, 8)```

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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Thanks Melba, just a little note maybe i was't clear:

[["A", "A", "-"]

Two separate field for name and surname. Is the same code or i'll change something? Thanks again

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• Moderators

HeyTom,

A couple of changes needed:

```#include <Array.au3>

Global \$aArray[][] = [["Tom", "AA", "-"], _
["Tom", "AA", "+"], _
["Tom", "BB", "+"], _
["Tom", "CC", "+"], _
["Tom", "DD", "-"], _
["Tom", "DD", "-"], _
["Tom", "DD", "+"], _
["Tom", "EE", "+"]]

For \$i = UBound(\$aArray) - 1 To 1 Step -1
\$sCurrent = \$aArray[\$i][1]
; Look for earlier duplicates
For \$j = \$i - 1 To 0 Step -1
If \$aArray[\$j][1] == \$sCurrent Then
\$aArray[\$j][1] = ""
Else
ExitLoop
EndIf
Next
\$i = \$j + 1

;_ArrayDisplay(\$aArray, \$i & " - " & \$j, Default, 8)

Next

_ArrayDisplay(\$aArray, "Ended", Default, 8)```

Over to you to spot the differences!

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'll study it, thanks again

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