Math::N...erseAdd(3)

💖 Math::NumSeq::ReverseAdd 💖

okay bestie, so this page is Math::N...erseAdd(3) from the User Contributed Perl Documentation collection, and it's literally all about a lil Perl module that does the reverse-add thing. sit down, hydrate, let's go 🫶

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✨ NAME ✨

Math::NumSeq::ReverseAdd — steps of the reverse-add algorithm 🌸

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🎀 SYNOPSIS 🎀

use Math::NumSeq::ReverseAdd;
my $seq = Math::NumSeq::ReverseAdd->new (start => 196);
my ($i, $value) = $seq->next;

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🦋 DESCRIPTION 🦋

So the vibe is: you give it a starting point, and it spits out the reverse-add sequence from there. The whole gimmick is that you take a value, flip its digits around, add the flipped version back to the original, and boom 💥 that's your next value.

Like for example with start => 1:

1,2,4,8,16,77,154,605,1111,2222,...

watch the magic happen at 16: reverse those digits and you get 61, and then 16+61=77 which is the next value. it's giving ✨ arithmetic ✨

There's some genuine interest in whether you ever hit a palindrome like 77 in the sequence — but bestie, the sequence here just keeps going forever and ever, no cap. 🏃‍♀️💨

Default behavior? Digits get reversed in decimal. But the radix parameter lets you pick a different base if you're feeling spicy. 🌈

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💅 FUNCTIONS 💅

Peep "FUNCTIONS" in Math::NumSeq for the behavior that's common to, like, all the sequence classes. 👑

• $seq = Math::NumSeq::ReverseAdd->new (start => $n)
• $seq = Math::NumSeq::ReverseAdd->new (start => $n, radix => $r) — Create and return a new sequence object. new sequence object, who dis 💖

🔢 Random Access 🔢

• $value = $seq->ith($i) — Return the *$i*th value in the sequence. just hand it an index, it hands you a value. iconic behavior fr fr 🎀

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🌟 SEE ALSO 🌟

• Math::NumSeq
• Math::NumSeq::ReverseAddSteps

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🏠 HOME PAGE 🏠

<http://user42.tuxfamily.org/math-numseq/index.html>

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📜 LICENSE 📜

Copyright 2011, 2012, 2013, 2014, 2016, 2019, 2020 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 of the License, 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/>.

okay real talk for one sec 🙈 — that warranty bit is NOT a joke, it's all caps for a reason. no promises, bestie. read the actual license.

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and that's the whole page, periodt 💅 this was perl v5.42.0, dated 2025-07-25 — ty for coming to my ted talk, mwah 🫶💖