local $_ = '12345';
while( /(?=..)/g ) {
    my $pos = pos();
    s/\G(.)(.)/$2$1/;
    pos() = $pos + length($2);
}
print $_, $/
__END__
23451

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- tye        

In reply to Re^2: rotate a vector with a regex? (//g, s/\G) by tye
in thread rotate a vector with a regex? by misterperl

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