?. should be stable but different result on J32 vs J64 J32 '89551d61c612f81fb7553a355bf932d2d8f78ed7' -: (128!:6) ": ?.#~1e6
J64 '6ebe83e54f37c4cdb3cfb617e657af9dd2074c42' -: (128!:6) ": ?.#~1e6 Thu, 06 Feb 2020, bill lam написал(а): > Strange, I got 94 on arm64. > > Did 32bits and 64bits get different results? > > On Thu, Feb 6, 2020, 8:21 PM Arnab Chakraborty <[email protected]> wrote: > > > Dear all, > > > > For my class of about 30 students armed with JAndroid 901, I had planned to > > use ?. to generate a random matrix which should be same for everybody. To > > start with, I asked everybody to try > > > > ?. 100 > > > > Some got 46, others got 93. No other values. Next, someone noticed that if > > they repeatedly type > > > > ? 100 > > > > then many are getting the SAME sequence of "random" numbers. Hence my > > question: > > > > 1) Is there a way to produce predictable "random numbers" across different > > machines (all running Jandroid 901_*, where the *'s may differ)? > > > > 2) Is there some way to get the initial seed from, say, the system time in > > millisecond (or something like that)? > > > > Thanks a lot. > > > > Arnab. > > > > PS: BTW, my students are loving J! > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > -- regards, ==================================================== GPG key 1024D/4434BAB3 2008-08-24 gpg --keyserver subkeys.pgp.net --armor --export 4434BAB3 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
