if ($indx % 2 == 0)
#       ^


##</code><code>##

my @a = qw(1 10 5 345 2 12);


##</code><code>##

my @a = (1, 10, 5, 345, 2, 12);


##</code><code>##

my @a = split ' ', '1 10 5 345 2 12';


##</code><code>##

($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,