From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: fc89c,97188312486d4578 X-Google-Attributes: gidfc89c,public X-Google-Thread: 103376,97188312486d4578 X-Google-Attributes: gid103376,public X-Google-Thread: 1014db,6154de2e240de72a X-Google-Attributes: gid1014db,public X-Google-Thread: 109fba,baaf5f793d03d420 X-Google-Attributes: gid109fba,public From: huang@mnsinc.com (Szu-Wen Huang) Subject: Re: Teaching sorts [was Re: What's the best language to start with?] Date: 1996/08/16 Message-ID: <4v2qkd$40f@news1.mnsinc.com>#1/1 X-Deja-AN: 174676662 distribution: inet references: <4umeot$re2@hil-news-svc-2.compuserve.com> <4v2fb9$lpj@news.utdallas.edu> followup-to: comp.lang.c,comp.lang.c++,comp.unix.programmer,comp.lang.ada organization: Monumental Network Systems newsgroups: comp.lang.c,comp.lang.c++,comp.unix.programmer,comp.lang.ada Date: 1996-08-16T00:00:00+00:00 List-Id: Steve Heller (heller@utdallas.edu) wrote: [snip] : As I understand it, the O() notation indicates how the time to : process varies with the number of elements. E.g., if 1000 elements : take 1 second and 2000 elements take 2 seconds to sort, the sorting : algorithm is O(n). According to this definition, the distribution : counting sort is O(n). [snip] Wrong order. An O(n) program where n=1,000 that takes 1 second to complete should be able to finish n=2,000 in 2 seconds, not the other way around. In other words, you can't derive time complexity by timing an algorithm, *especially* with only two samples.