I wonder if you've overlooked my solution, or if there's anything wrong with it.

Indeed I did, as it was posted as a reply to someone else. And no, there is nothing wrong with it.

It beats out salva's (just), and is a simple, clean, and direct implementation of the requirements. I have my winner. Thank you.

Now I've seen it, I'm somewhat chagrined that I didn't see it for myself. It would still be my winner even if it were slightly slower than the flags & resets versions.

Yours is xA below: 

[19:48:48.65] c:\test>junk -I=3 ABCDEF 12
      Rate   x0   x3   x9   x8   x5   x4   x6   x7   xA
x0  9794/s   --  -8% -13% -19% -35% -36% -38% -43% -51%
x3 10606/s   8%   --  -6% -12% -30% -31% -33% -39% -46%
x9 11286/s  15%   6%   --  -6% -25% -26% -29% -35% -43%
x8 12063/s  23%  14%   7%   -- -20% -21% -24% -30% -39%
x5 15122/s  54%  43%  34%  25%   --  -1%  -5% -12% -24%
x4 15340/s  57%  45%  36%  27%   1%   --  -3% -11% -23%
x6 15863/s  62%  50%  41%  32%   5%   3%   --  -8% -20%
x7 17248/s  76%  63%  53%  43%  14%  12%   9%   -- -13%
xA 19822/s 102%  87%  76%  64%  31%  29%  25%  15%   --

[19:49:50.63] c:\test>junk -I=3 ABCDEF 120
     Rate    x0    x3    x4    x8    x9    x6    x5    x7    xA
x0  275/s    --  -20%  -21%  -80%  -80%  -86%  -86%  -91%  -92%
x3  341/s   24%    --   -2%  -75%  -75%  -82%  -83%  -89%  -90%
x4  349/s   27%    2%    --  -75%  -75%  -82%  -82%  -89%  -90%
x8 1383/s  404%  305%  296%    --   -0%  -29%  -30%  -57%  -59%
x9 1386/s  405%  306%  297%    0%    --  -29%  -30%  -57%  -59%
x6 1945/s  608%  470%  457%   41%   40%    --   -1%  -40%  -42%
x5 1971/s  618%  477%  465%   43%   42%    1%    --  -39%  -41%
x7 3216/s 1071%  842%  821%  133%  132%   65%   63%    --   -4%
xA 3346/s 1119%  880%  859%  142%  141%   72%   70%    4%    --

[19:50:43.49] c:\test>junk -I=3 ABCDEF 1200
     Rate     x4     x0     x3     x8     x9     x6     x5     x7     
+xA
x4 3.33/s     --    -0%    -8%   -98%   -98%   -98%   -98%   -99%   -9
+9%
x0 3.33/s     0%     --    -8%   -98%   -98%   -98%   -98%   -99%   -9
+9%
x3 3.61/s     8%     8%     --   -97%   -98%   -98%   -98%   -99%   -9
+9%
x8  137/s  4019%  4019%  3700%     --    -8%   -25%   -27%   -61%   -6
+3%
x9  149/s  4366%  4366%  4020%     8%     --   -19%   -21%   -58%   -6
+0%
x6  183/s  5392%  5392%  4966%    33%    23%     --    -3%   -48%   -5
+0%
x5  189/s  5578%  5578%  5138%    38%    27%     3%     --   -46%   -4
+9%
x7  351/s 10434% 10434%  9618%   156%   136%    92%    86%     --    -
+5%
xA  368/s 10960% 10960% 10104%   169%   148%   101%    95%     5%     
+--

[download]

In reply to Re^4: Random data generation. by BrowserUk
in thread Random data generation. by BrowserUk

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