Znn3bq.jpeg
±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 1661  |  »Ø¸´: 1

Simewe

гæ (³õÈëÎÄ̳)

[ÇóÖú] MatlabÖÐ×Ô¶¨ÒåµÄº¯ÊýÔõôÄÜÖ§³ÖÏòÁ¿»¯²Ù×÷?

CODE:
function r=primeQ(n)
r=1;
for i=2:sqrt(n);
    if mod(n,i)==0;
        r=0;
        return
    end
end;

ÉÏÃæµÄprimeQÊǸöÅжÏËØÊýµÄº¯Êý£¬µ÷ÓõÄʱºòÖ»»áÕâÑùÓÃ
sum( arrayfun(@primeQ, 2:1e6) )
Ìý˵arraygfunµÄËٶȲ»¿ì£¬ÎÒÏ£Íû¿ÉÒÔÖ§³ÖÏòÁ¿»¯²Ù×÷£¬¾ÍÏñÏÂÃæÕâÑù
sum(primeQ(2:1e5))
Ó¦¸ÃÔõô×ö£¿
×¢Ò⣺ÎÒÖªµÀÅжÏËØÊýÓиüºÃµÄËã·¨£¬ÎÒ¹ØÐĵIJ»ÊÇËã·¨ÎÊÌâ
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

prs1022

Ìú³æ (³õÈëÎÄ̳)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

ÄãÊ×ÏȲâÊÔÊÇ·ñΪżÊý£¬Èç¹û²»ÊÇ£¬ºó±ßµÄżÊýÒò×Ó¿ÉÒÔÈ«²¿Ìø¹ý£¬ÕâÑù¿ÉÒÔ¼õÉÙ¸ü¶àµÄʱ¼ä
µ±È»¿ÉÒÔÒ²¶Ô3×öͬÑùµÄ²Ù×÷£¬ÅжÏÊý²»ÊÇ2»ò3µÄ±¶ÊýºóÖ»ÒªÅжÏÄÇЩ6k+1ºÍ6k+5µÄÒò×Ó
¿ÉÒÔ¼ÌÐøÏÂÈ¥£¬µ«ÊÇÔ½ÍùºóÌáÉýµÄЧ¹û¾ÍÔ½²î£¬ËùÒÔ×ÔÐÐÕå×Ã

¶ÔÓڱȽϴóµÄÊý¿ÉÒÔ¿¼ÂÇÓÃFermatС¶¨Àí»òÕßMiller-Rabin¼ìÑéÈ¥Åжϣ»Ë«¾«¶È×î´óÁ¬ÐøÕûÊýÉÏÏÞÊÇ2^53

ÁíÍâ¿ÉÒÔÓÃmatlab coder°ÑmÎļþת»»³Émex£¬ÕâÑù»á¸ü¿ì
stayhungry,stayfoolish
2Â¥2013-10-24 17:20:47
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ Simewe µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 278Çóµ÷¼Á +17 ·¶æÃÄÈ 2026-04-07 18/900 2026-04-08 14:43 by lijunpoly
[¿¼ÑÐ] 0702ÎïÀíѧѧ˶299Çóµ÷¼Á +4 ÆîÆâÁ¬ 2026-04-06 4/200 2026-04-08 13:56 by wutongshun
[¿¼ÑÐ] Çóµ÷¼ÁÇóµ÷¼Á +12 121. 2026-04-02 12/600 2026-04-08 10:01 by barlinike
[¿¼ÑÐ] 263·ÖBÇøÇóµ÷¼Á +6 Àînihao 2026-04-08 6/300 2026-04-08 09:38 by ÄÏ¿ªÐ¡ôë
[¿¼ÑÐ] Çóµ÷¼Á +11 wwwwabcde 2026-04-07 11/550 2026-04-07 23:16 by JourneyLucky
[¿¼ÑÐ] 293·ÖÇóµ÷¼Á£¬ÍâÓïΪ¶íÓï +5 ¼ÓÒ»Ò»¾Å 2026-04-07 7/350 2026-04-07 23:04 by JourneyLucky
[¿¼ÑÐ] 277Çóµ÷¼Á ÊýÒ»104·Ö +9 Æ¿×ÓPZ 2026-04-05 14/700 2026-04-07 17:52 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 315Çóµ÷¼Á +3 TUZEIQAQ 2026-04-02 3/150 2026-04-07 17:32 by chenp123
[¿¼ÑÐ] Èí¹¤Ñ§Ë¶299Çóµ÷¼Á +6 useryy 2026-04-07 6/300 2026-04-07 09:50 by vgtyfty
[¿¼ÑÐ] Ò»Ö¾Ô¸¹ú¿Æ´óÐŹ¤Ëù,Ó¢¶þÊý¶þ408×Ü·Ö293·ÖÇóµ÷¼Á +3 ilcyuan 2026-04-02 4/200 2026-04-06 16:35 by likeihood
[¿¼ÑÐ] Çóµ÷¼Á +10 Hllºú 2026-04-04 10/500 2026-04-05 20:09 by nepu_uu
[¿¼ÑÐ] 306·Ö²ÄÁÏÓ뻯¹¤Çóµ÷¼Á +7 Àè°ÉÀ²À²ÄãºÜÓÐà 2026-04-03 7/350 2026-04-05 17:18 by Hdyxbekcb
[¿¼ÑÐ] 321Çóµ÷¼Á +6 ÈÏÕæÇóÉÏѧ 2026-04-03 6/300 2026-04-04 19:51 by dongzh2009
[¿¼ÑÐ] Ò»Ö¾Ô¸0817»¯Ñ§¹¤³ÌÓë¼¼Êõ£¬Çóµ÷¼Á +24 ÎÒ²»ÊÇÖ»Òò 2026-04-02 28/1400 2026-04-04 15:15 by dongzh2009
[¿¼ÑÐ] Ò»Ö¾Ô¸»¦985£¬326·ÖÇóµ÷¼Á +3 Áõīī 2026-04-03 3/150 2026-04-04 11:16 by ±¯É˵ÄÓóÍ·
[¿¼ÑÐ] 335Çóµ÷¼Á +7 ÉòÇåÁ§ 2026-04-03 7/350 2026-04-03 18:55 by lijunpoly
[¿¼ÑÐ] ¹¤¿Æ341·Öµ÷¼Á +3 Âå¶àÂÞ 2026-04-03 3/150 2026-04-03 14:20 by 1753564080
[¿¼ÑÐ] 366Çóµ÷¼Á +7 sbdnd 2026-04-03 7/350 2026-04-03 12:40 by cymywx
[¿¼ÑÐ] 285Çóµ÷¼Á +7 AZMK 2026-04-02 9/450 2026-04-03 11:12 by wanwan00
[¿¼ÑÐ] ÄÜÔ´¶¯Á¦ µ÷¼Á +3 ²»ÆÆ²»Á¢0 2026-04-02 3/150 2026-04-02 12:46 by ffffjjjj
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û