Can sombody please tell me how to make @myarray (in the codesample below) contain chars a-z, and 1-9 without actually typing them? (like with some cool tr//something?

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@myarray=("a","b","c");
srand;

while($i<8) {
 $index=rand(@myarray);
 $mysamplepass="$mysamplepass"."@myarray[$index]";
 $i=$i+1;
}
print $mysamplepass;
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