Thanks to autovivification, the direct calculation of max is unnecessary. To create an array whose final element is at the maximum position of a 1:

my @bits;
$bits[$_] = 1 for @pos;
for (0..($#bits-1)) {
  $bits[$_]=0 unless defined($bits[$_]);
}

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Best, beth

In reply to Re^2: sequence of positions to binary sequence by ELISHEVA
in thread sequence of positions to binary sequence by coldy

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