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Smalltalk - help

Smalltalk - help

i'm new and i have this  problem:
It is an "Unhandled exception: subscript out of bound"

a2:= Array new: 10.
Transcript clear.
i :=0.
a1 := #(6 1 9 3 4 13 77 99 33 10 34 22 33 78 55 66 90 2 3 4 7 8 0).
1 to: a1 size  do: [:j | ((a1 at: j) rem:2) = 0 ifFalse: [ (a2 at: i put: (a1 at: j)). i := i+1]].

I just want to select odds from array a1..

RE: Smalltalk - help

I found the solution

a2:= OrderedCollection new:56.
Transcript clear.
a1 := #(6 1 9 3 4 13 77 99 33 10 34 22 33 78 55 66 90 2 3 4 7 8 0).
1 to: a1 size  do: [:j | ((a1 at: j) rem:2) = 0 ifFalse: [ (a2 add: (a1 at: j))]].

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