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Re: Sort of trivial code challenge - may be interesting to you anyway

From Tim Rentsch <tr.17687@z991.linuxsc.com>
Newsgroups comp.lang.c
Subject Re: Sort of trivial code challenge - may be interesting to you anyway
Date 2026-03-11 07:57 -0700
Organization A noiseless patient Spider
Message-ID <86zf4e8lcf.fsf@linuxsc.com> (permalink)
References (3 earlier) <86ms0peby6.fsf@linuxsc.com> <10ockdh$3qpk6$1@dont-email.me> <10ocrjn$3qpk6$2@dont-email.me> <10od30j$79v9$1@dont-email.me> <20260307220446.000077d9@yahoo.com>

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Michael S <already5chosen@yahoo.com> writes:

[concerning implementing integer square root]

> Here is O(log(N)) variant [...]
>
> unsigned usqrt(unsigned x)
> {
>   if (x < 2)
>     return x;
>   unsigned y = x/2, r;
>   while ((r = x / y) < y)
>     y = (r + y) / 2;
>   return y;
> }

Right, O(log(N)).  The initial guess is kind of out in left field so
it takes a while to get into a good zone of convergence.

> And here is variation that is a little less simple, but not
> complicated and faster than one before, because it does fewer
> divisions.  The number of divisions that can't be implemented as
> shift is at most ceil(sqrt(ceil(log2(ceil(sqrt(val)))
>
> unsigned usqrt(unsigned x)
> {
>   if (x < 2)
>     return x;
>   unsigned y = 8, xx = x;
>   while (xx > 63) {
>     xx /= 64;
>     y *= 8;
>   }
>   unsigned r;
>   while ((r = x / y) < y)
>     y = (r + y) / 2;
>   return y;
> }

Here I think your analysis is a little off.  Newton's Method has
quadratic convergence, given an appropriate initial guess.  That
means the second while loop is O(log(# bits)), or O(log(log(N))).

The initial loop, to find a good initial guess, can also be made to
be O(log(log(N)));  exercise for the reader.

The foregoing assumes the usual C operators are O(1), which of
course isn't right as the width of the type involved gets larger,
but that assumption is typically made in this kind of analysis.

(Note: since the width of unsigned int is fixed, technically the
performance of these algorithms is all O(1).  But usually that
condition of constant width is ignored in this sort of discussion.)

> And here is less simple but still obvious implementation that does
> no divisions at all.  No multiplications as well.
>
> unsigned usqrt(unsigned x)
> {
>   if (x < 2)
>     return x;
>   unsigned xx = x;
>   int e = 0;
>   while (xx > 63) {
>     xx /= 64;
>     e += 3;
>   }
>   while (xx > 3) {
>     xx /= 4;
>     e += 1;
>   }
>   unsigned y = 1u << e;
>   x -= y << e;
>   for (e = e - 1; e >= 0; --e) {
>     unsigned d = y*2 + (1u << e);
>     if (d <= (x >> e)) {
>       x -= d << e;
>       y += 1u << e;
>     }
>   }
>   return y;
> }

Here the behavior is linear in the number of bits, or O(log(N)).  At
some point (but not for 32-bit integers) the division method wins
out.

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Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-02-19 16:55 -0500
  Re: Sort of trivial code challenge - may be interesting to you anyway jayjwa <jayjwa@atr2.ath.cx.invalid> - 2026-02-25 15:56 -0500
    Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-02-26 10:05 -0500
      Re: Sort of trivial code challenge - may be interesting to you anyway jayjwa <jayjwa@atr2.ath.cx.invalid> - 2026-02-26 13:20 -0500
  Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-02-26 17:06 +0000
    Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-02-26 17:27 +0000
      Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-02-26 14:31 -0500
    Re: Sort of trivial code challenge - may be interesting to you anyway jayjwa <jayjwa@atr2.ath.cx.invalid> - 2026-02-26 13:33 -0500
      Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-02-26 18:49 +0000
        Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-02-26 18:55 +0000
          Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-02-26 19:17 +0000
    Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-02-26 19:34 +0000
      Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-02-26 20:01 +0000
      Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-06 10:36 -0500
        Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-03-06 17:38 +0000
          Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-03-06 17:48 +0000
  Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-02-27 00:12 +0000
    [OT] Bart's scripting language solution (was Re: Sort of trivial code challenge - may be interesting to you anyway) Janis Papanagnou <janis_papanagnou@hotmail.com> - 2026-03-06 06:37 +0100
      Re: [OT] Bart's scripting language solution (was Re: Sort of trivial code challenge - may be interesting to you anyway) Bart <bc@freeuk.com> - 2026-03-06 15:48 +0000
        Re: [OT] Bart's scripting language solution (was Re: Sort of trivial code challenge - may be interesting to you anyway) Janis Papanagnou <janis_papanagnou@hotmail.com> - 2026-03-06 18:17 +0100
          Re: [OT] Bart's scripting language solution (was Re: Sort of trivial code challenge - may be interesting to you anyway) Bart <bc@freeuk.com> - 2026-03-06 21:46 +0000
  Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-02 00:44 -0800
    Re: Sort of trivial code challenge - may be interesting to you anyway Michael S <already5chosen@yahoo.com> - 2026-03-02 11:07 +0200
      Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-02 06:35 -0800
        Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-02 17:50 +0000
          Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-02 21:15 -0800
            Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-03 20:48 +0000
              Re: Sort of trivial code challenge - may be interesting to you anyway Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-03-03 22:47 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway David Brown <david.brown@hesbynett.no> - 2026-03-04 08:48 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-03-04 01:07 -0800
                Re: Sort of trivial code challenge - may be interesting to you anyway Michael S <already5chosen@yahoo.com> - 2026-03-04 12:09 +0200
                Re: Sort of trivial code challenge - may be interesting to you anyway Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-03-04 11:19 -0800
                Re: Sort of trivial code challenge - may be interesting to you anyway David Brown <david.brown@hesbynett.no> - 2026-03-04 12:58 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-11 11:31 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-04 13:20 +0000
              Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-04 08:30 -0500
                Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-04 14:36 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-04 10:02 -0500
                Re: Sort of trivial code challenge - may be interesting to you anyway Michael S <already5chosen@yahoo.com> - 2026-03-04 19:27 +0200
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-05 13:49 -0500
                Re: Sort of trivial code challenge - may be interesting to you anyway Michael S <already5chosen@yahoo.com> - 2026-03-05 21:02 +0200
                Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-05 20:39 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-05 19:24 -0500
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-05 13:54 -0800
              Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-12 05:50 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-13 11:58 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-13 23:00 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-15 15:54 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-15 23:42 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-04-06 12:02 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-15 15:43 -0700
    Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-02 17:40 -0500
      Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-02 21:09 -0800
        Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-03 08:23 -0500
          Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-03 06:20 -0800
            Re: Sort of trivial code challenge - may be interesting to you anyway Michael S <already5chosen@yahoo.com> - 2026-03-03 23:56 +0200
              Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-03 15:51 -0800
                Re: Sort of trivial code challenge - may be interesting to you anyway Michael S <already5chosen@yahoo.com> - 2026-03-04 11:45 +0200
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-04 07:01 -0800
              Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-11 11:37 +0100
            Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-04 08:29 -0500
              Re: Sort of trivial code challenge - may be interesting to you anyway Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-03-04 16:02 +0100
              Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-04 08:09 -0800
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-06 10:34 -0500
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-06 08:46 -0800
              Re: Sort of trivial code challenge - may be interesting to you anyway Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-03-04 11:25 -0800
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-05 13:46 -0500
                Re: Sort of trivial code challenge - may be interesting to you anyway David Brown <david.brown@hesbynett.no> - 2026-03-05 21:34 +0100
        Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-03-05 19:09 +0000
          Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-03-05 21:12 +0000
            Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-05 14:12 -0800
              Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-03-05 22:24 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Michael S <already5chosen@yahoo.com> - 2026-03-06 01:00 +0200
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-05 15:08 -0800
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-05 15:05 -0800
            Re: Sort of trivial code challenge - may be interesting to you anyway Janis Papanagnou <janis_papanagnou@hotmail.com> - 2026-03-06 00:18 +0100
              Re: Sort of trivial code challenge - may be interesting to you anyway Michael S <already5chosen@yahoo.com> - 2026-03-07 22:04 +0200
                Re: Sort of trivial code challenge - may be interesting to you anyway Janis Papanagnou <janis_papanagnou@hotmail.com> - 2026-03-08 00:26 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway Michael S <already5chosen@yahoo.com> - 2026-03-08 02:45 +0200
                Re: Sort of trivial code challenge - may be interesting to you anyway Janis Papanagnou <janis_papanagnou@hotmail.com> - 2026-03-08 17:05 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-11 07:57 -0700
            Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-03-06 00:12 +0000
              Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-03-06 00:14 +0000
              Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-05 20:31 -0800
                Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-03-06 13:51 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-06 08:53 -0800
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-06 19:36 -0500
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-06 18:14 -0800
                Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-03-07 18:21 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-07 11:55 -0800
                Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-03-07 20:10 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-11 10:44 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-07 12:02 -0800
                Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-03-07 20:14 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-11 10:53 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-07 16:58 -0500
                Re: Sort of trivial code challenge - may be interesting to you anyway Michael S <already5chosen@yahoo.com> - 2026-03-08 00:35 +0200
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-11 08:23 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Janis Papanagnou <janis_papanagnou@hotmail.com> - 2026-03-08 00:40 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-08 10:42 -0400
                Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-08 15:18 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-08 12:21 -0400
                Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-08 19:29 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-09 21:20 -0400
                Re: Sort of trivial code challenge - may be interesting to you anyway scott@slp53.sl.home (Scott Lurndal) - 2026-03-10 14:43 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Michael S <already5chosen@yahoo.com> - 2026-03-10 18:08 +0200
                Re: Sort of trivial code challenge - may be interesting to you anyway Giovanni <lsodgf0@home.net.it> - 2026-03-10 17:18 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway scott@slp53.sl.home (Scott Lurndal) - 2026-03-10 16:32 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-03-10 15:25 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-11 07:07 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-03-11 13:49 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-10 20:24 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-03-10 15:29 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-11 00:29 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway scott@slp53.sl.home (Scott Lurndal) - 2026-03-11 00:33 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-11 11:04 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway antispam@fricas.org (Waldek Hebisch) - 2026-03-10 20:18 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-12 05:37 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Janis Papanagnou <janis_papanagnou@hotmail.com> - 2026-03-08 17:57 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-03-08 13:19 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-09 01:12 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway scott@slp53.sl.home (Scott Lurndal) - 2026-03-08 21:42 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-03-08 15:58 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway David Brown <david.brown@hesbynett.no> - 2026-03-09 08:09 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway Janis Papanagnou <janis_papanagnou@hotmail.com> - 2026-03-09 08:53 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-03-09 15:25 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-11 14:40 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-12 05:55 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-03-08 16:00 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-11 12:44 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Janis Papanagnou <janis_papanagnou@hotmail.com> - 2026-03-08 17:36 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-03-08 13:27 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-11 06:33 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway David Brown <david.brown@hesbynett.no> - 2026-03-08 12:22 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-11 06:27 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-03-07 16:43 -0800
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-11 07:29 -0700
                Re: Sort of trivial code challenge - may be interesting to you anyway Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-03-11 14:22 -0700
              Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-06 16:02 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-06 12:11 -0500
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-06 13:01 -0500
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-06 13:28 -0500
                Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-06 21:53 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-06 22:14 -0500
                Re: Sort of trivial code challenge - may be interesting to you anyway Janis Papanagnou <janis_papanagnou@hotmail.com> - 2026-03-07 07:33 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-07 10:24 -0500
                Re: Sort of trivial code challenge - may be interesting to you anyway Janis Papanagnou <janis_papanagnou@hotmail.com> - 2026-03-07 19:16 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-07 14:18 -0500
                Re: Sort of trivial code challenge - may be interesting to you anyway Janis Papanagnou <janis_papanagnou@hotmail.com> - 2026-03-08 00:47 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-09 22:18 -0400
                Re: Sort of trivial code challenge - may be interesting to you anyway Richard Harnden <richard.nospam@gmail.invalid> - 2026-03-10 10:14 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Richard Harnden <richard.nospam@gmail.invalid> - 2026-03-11 11:40 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-07 13:33 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Richard Harnden <richard.nospam@gmail.invalid> - 2026-03-07 14:53 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Bart <bc@freeuk.com> - 2026-03-07 15:44 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Michael S <already5chosen@yahoo.com> - 2026-03-07 19:53 +0200
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-07 10:22 -0500
              Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-11 11:40 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-11 11:00 -0400
                Re: Sort of trivial code challenge - may be interesting to you anyway wij <wyniijj5@gmail.com> - 2026-03-12 00:00 +0800
                Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-11 18:03 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway scott@slp53.sl.home (Scott Lurndal) - 2026-03-11 17:52 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway wij <wyniijj5@gmail.com> - 2026-03-12 23:14 +0800
                Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-12 16:23 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-03-12 16:11 -0700
          Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-05 14:04 -0800
        Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-11 11:36 +0100
      Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-11 11:35 +0100
    Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-03-03 15:40 +0000
      Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-03 16:23 -0800
        Re: Sort of trivial code challenge - may be interesting to you anyway Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2026-03-04 15:31 +0000
          Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-04 09:38 -0800
  Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-03 16:39 +0100
    Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-03 12:00 -0500
      Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-04 11:44 +0100
        Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-04 17:44 -0500
          Re: Sort of trivial code challenge - may be interesting to you anyway Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-03-04 15:13 -0800
            Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-04 21:07 -0500
          Re: Sort of trivial code challenge - may be interesting to you anyway scott@slp53.sl.home (Scott Lurndal) - 2026-03-04 23:37 +0000
          Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-05 07:32 +0100
            Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-05 08:23 +0100
        Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-05 02:24 -0500
          Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-05 08:46 +0100
            Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-05 09:52 +0100
              Re: Sort of trivial code challenge - may be interesting to you anyway tTh <tth@none.invalid> - 2026-03-05 10:49 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-05 11:03 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway gazelle@shell.xmission.com (Kenny McCormack) - 2026-03-05 15:22 +0000
            Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-05 05:06 -0500
              Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-05 11:13 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway DFS <nospam@dfs.com> - 2026-03-05 14:11 -0500
                Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-06 03:35 +0100
          Re: Sort of trivial code challenge - may be interesting to you anyway scott@slp53.sl.home (Scott Lurndal) - 2026-03-05 14:49 +0000
            Re: Sort of trivial code challenge - may be interesting to you anyway Janis Papanagnou <janis_papanagnou@hotmail.com> - 2026-03-05 19:27 +0100
            Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-05 19:46 +0100
              Re: Sort of trivial code challenge - may be interesting to you anyway tTh <tth@none.invalid> - 2026-03-05 20:50 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway Michael S <already5chosen@yahoo.com> - 2026-03-05 22:34 +0200
                Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-06 07:48 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway Michael S <already5chosen@yahoo.com> - 2026-03-06 11:49 +0200
                Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-06 13:41 +0100
                Re: Sort of trivial code challenge - may be interesting to you anyway Michael S <already5chosen@yahoo.com> - 2026-03-06 15:33 +0200
                Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-06 14:42 +0100
            Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-05 13:49 -0800
              Re: Sort of trivial code challenge - may be interesting to you anyway scott@slp53.sl.home (Scott Lurndal) - 2026-03-06 02:17 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-05 20:06 -0800
                Re: Sort of trivial code challenge - may be interesting to you anyway scott@slp53.sl.home (Scott Lurndal) - 2026-03-06 14:58 +0000
                Re: Sort of trivial code challenge - may be interesting to you anyway Michael S <already5chosen@yahoo.com> - 2026-03-06 17:13 +0200
                Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-06 08:37 -0800
    Re: Sort of trivial code challenge - may be interesting to you anyway scott@slp53.sl.home (Scott Lurndal) - 2026-03-03 17:29 +0000
      Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-03 19:20 +0100
    Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-03 16:26 -0800
      Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-04 05:27 +0100
  Re: Sort of trivial code challenge - may be interesting to you anyway Opus <ifonly@youknew.org> - 2026-03-04 22:42 +0100
  Re: Sort of trivial code challenge - may be interesting to you anyway peter <peter.noreply@tin.it> - 2026-03-14 10:42 +0100
    Re: Sort of trivial code challenge - may be interesting to you anyway Tim Rentsch <tr.17687@z991.linuxsc.com> - 2026-03-15 15:09 -0700
      Re: Sort of trivial code challenge - may be interesting to you anyway Bonita Montero <Bonita.Montero@gmail.com> - 2026-03-16 09:04 +0100

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