Use mod:://List::Util's reduce: 
use List::Util qw /reduce/;

my @arr= qw/7 6 4 90 5 7/;

my $index = reduce {$arr[$a] > $arr[$b] ? $a : $b} (0 .. $#arr);

print "$index\n";

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In reply to Re: How can I find the index of the biggest element in an array? by DillonYu
in thread How can I find the index of the biggest element in an array? by Anonymous Monk

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