Math::NumSeq::DigitLength -- length in digits
use Math::NumSeq::DigitLength; my $seq = Math::NumSeq::DigitLength->new (radix => 10); my ($i, $value) = $seq->next;
The length in digits of integers 0 upwards,
1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,...
The default is decimal digits, or the optional radix
can give another base. For example ternary
1,1,1,2,2,...,2,3,...
Zero is reckoned as a single digit 0 which is length 1.
See "FUNCTIONS" in Math::NumSeq for behaviour common to all sequence classes.
$seq = Math::NumSeq::DigitLength->new (radix => $r)
Create and return a new sequence object.
$value = $seq->ith($i)
Return length in digits of $i
.
$bool = $seq->pred($value)
Return true if $value
occurs as a digit length. This means simply $value >= 1
since lengths are 1 or more.
Math::NumSeq, Math::NumSeq::DigitLengthCumulative, Math::NumSeq::DigitCount, Math::NumSeq::AllDigits
http://user42.tuxfamily.org/math-numseq/index.html
Copyright 2010, 2011, 2012, 2013, 2014 Kevin Ryde
Math-NumSeq is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version.
Math-NumSeq is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with Math-NumSeq. If not, see <http://www.gnu.org/licenses/>.