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| From | Ben Bacarisse <ben.usenet@bsb.me.uk> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: How to encode/decode string of decimal digits |
| Date | 2015-10-22 20:48 +0100 |
| Organization | A noiseless patient Spider |
| Message-ID | <87twpi4rcp.fsf@bsb.me.uk> (permalink) |
| References | (7 earlier) <n0ab85$e5r$1@dont-email.me> <n0ai26$56d$1@dont-email.me> <87fv13gjgr.fsf@bsb.me.uk> <87vb9zez2u.fsf@bsb.me.uk> <eb30863e-a503-42d9-bbc7-b58a196aea0b@googlegroups.com> |
supercat@casperkitty.com writes: > On Thursday, October 22, 2015 at 9:51:41 AM UTC-5, Ben Bacarisse wrote: >> ... Fancier encodings can get up to 18 digits and, if I've counted >> them right, it is theoretically possible to encode all strings up to 19 >> digits in 64 bits, but that's likely to be very messy. > > A uint64_t handles numbers up to 18446744073709551616 (20 digits) > > Simple approach: Add 2 to the first digit, replacing it with two digits 10 or > 11 if needed. Very nice. I like it. I don't think I'd ever have come up with adding 2 to the lead digit. (It doesn't naturally encode the empty string of digits, but that would be trivial to add as a special case if needed -- zero springs to mind!) <snip> -- Ben.
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How to encode/decode string of decimal digits pozz <pozzugno@gmail.com> - 2015-10-19 14:28 +0200
Re: How to encode/decode string of decimal digits Bartc <bc@freeuk.com> - 2015-10-19 14:07 +0100
Re: How to encode/decode string of decimal digits pozz <pozzugno@gmail.com> - 2015-10-19 15:58 +0200
Re: How to encode/decode string of decimal digits Bartc <bc@freeuk.com> - 2015-10-19 15:22 +0100
Re: How to encode/decode string of decimal digits Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-10-19 15:58 +0100
Re: How to encode/decode string of decimal digits Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-10-19 22:28 +0100
Re: How to encode/decode string of decimal digits Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-10-19 13:30 -0400
Re: How to encode/decode string of decimal digits Robert Wessel <robertwessel2@yahoo.com> - 2015-10-19 16:18 -0500
Re: How to encode/decode string of decimal digits Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-10-19 21:38 -0400
Re: How to encode/decode string of decimal digits Jorgen Grahn <grahn+nntp@snipabacken.se> - 2015-10-20 08:00 +0000
Re: How to encode/decode string of decimal digits Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-10-19 15:50 +0100
Re: How to encode/decode string of decimal digits Keith Thompson <kst-u@mib.org> - 2015-10-19 09:01 -0700
Re: How to encode/decode string of decimal digits Tim Rentsch <txr@alumni.caltech.edu> - 2015-10-19 12:11 -0700
Re: How to encode/decode string of decimal digits pozz <pozzugno@gmail.com> - 2015-10-20 13:51 +0200
Re: How to encode/decode string of decimal digits Bartc <bc@freeuk.com> - 2015-10-20 13:38 +0100
Re: How to encode/decode string of decimal digits glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-20 16:05 +0000
Re: How to encode/decode string of decimal digits pozz <pozzugno@gmail.com> - 2015-10-21 09:29 +0200
Re: How to encode/decode string of decimal digits Bartc <bc@freeuk.com> - 2015-10-21 11:27 +0100
Re: How to encode/decode string of decimal digits pozz <pozzugno@gmail.com> - 2015-10-21 17:55 +0200
Re: How to encode/decode string of decimal digits Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-10-21 08:03 -0400
Re: How to encode/decode string of decimal digits pozz <pozzugno@gmail.com> - 2015-10-21 17:53 +0200
Re: How to encode/decode string of decimal digits supercat@casperkitty.com - 2015-10-21 09:37 -0700
Re: How to encode/decode string of decimal digits David Brown <david.brown@hesbynett.no> - 2015-10-22 11:47 +0200
Re: How to encode/decode string of decimal digits pozz <pozzugno@gmail.com> - 2015-10-22 13:44 +0200
Re: How to encode/decode string of decimal digits Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-10-22 13:45 +0100
Re: How to encode/decode string of decimal digits Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-10-22 15:51 +0100
Re: How to encode/decode string of decimal digits supercat@casperkitty.com - 2015-10-22 09:31 -0700
Re: How to encode/decode string of decimal digits Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-10-22 20:48 +0100
Re: How to encode/decode string of decimal digits pozz <pozzugno@gmail.com> - 2015-10-23 10:14 +0200
Re: How to encode/decode string of decimal digits Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-10-23 11:14 +0100
Re: How to encode/decode string of decimal digits Bartc <bc@freeuk.com> - 2015-10-23 11:47 +0100
Re: How to encode/decode string of decimal digits Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-10-23 13:22 +0100
Re: How to encode/decode string of decimal digits David Brown <david.brown@hesbynett.no> - 2015-10-22 15:07 +0200
Re: How to encode/decode string of decimal digits glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-22 22:05 +0000
Re: How to encode/decode string of decimal digits pozz <pozzugno@gmail.com> - 2015-10-23 10:15 +0200
Re: How to encode/decode string of decimal digits glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2015-10-19 22:02 +0000
Re: How to encode/decode string of decimal digits supercat@casperkitty.com - 2015-10-20 10:09 -0700
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