To do that in-place: 

@array1 = (1,33,45,66);
for (reverse 0..$#array1) {
    splice @array1, $_, 0, $array1[$_];
}
print "@array1\n";
__END__
1 1 33 33 45 45 66 66

[download]

--shmem 

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

In reply to Re: How do I double up elements within an array? by shmem
in thread How do I double up elements within an array? by Anonymous Monk

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