Not to be obtuse, but why can't you use rand? This smacks of an XY Problem. There are a myriad of ways to generate pseudom random series, and the appropriate solution depends very strongly on the intended purpose. 'Best time complexity' is solved by xkcd://221, which is probably not what you mean. Most Linux boxes have /dev/random at their disposal for truly high quality randomness, but this is overkill for nearly every application, and denies the possibility of playback.
~$ perl -e 'open $rnd, "<", "/dev/random"; read $rnd, $value, 4; prin
+t "Value = ", unpack ("H*", $value), "\n"'
Value = 0de13803
Equivalent functionality can be garnered on other systems with TrulyRandom
. These are very slow, though still 'Best time complexity'.
Describe your application, and the quality of the guidance we can provide will improve dramatically.
#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||