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作者 ericinttu 在 PTT [ C_and_CPP ] 看板的留言(推文), 共1361則
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收起看板(566)
1F推:根據文章標題, 應該是第2種. XD 一般是用灰度值表示遠近03/18 12:28
4F推: ^^^^^^^^^^^^^^^^^^^^^^03/18 20:13
5F→:是我會錯意還是原PO用了倒裝句?03/18 20:13
2F推:祕技推一下03/16 23:11
1F推:原本的f(x), 你可以先用簡單的式子, 如 f(x)=x-10 來想03/14 01:42
2F→:f(a)*f(b)<0 裡的 a 與 b 要怎麼得到.03/14 01:43
3F→:到這裡都還是數學, 不關程式.03/14 01:44
2F推:b. y. f. 大都是高手, 我汗顏中.03/14 00:19
1F→:pow(x,y)03/13 22:28
2F→:ln 我忘了要怎麼用 XD03/13 22:29
13F→:那你用的開心嘛?03/13 02:30
2F推:找 opencv + ROI, 有指令的03/11 19:16
5F推:那麼就... 我看不懂你要做什麼 XD03/11 20:07
11F推:你會用 opencv 的 roi 嗎? 會取出 iplimage 的 pixel 嗎03/11 20:20
14F推:算了. 別理我上面那一推. 中文理解能力太差了.03/11 20:22
6F推:你的getchar();是放在哪邊?03/10 23:55
1F推:視點與方向.03/10 21:14
1F→:第一次知道有 #include <algorithm> 提供 next_permutat03/10 17:08
2F→:ion 這東西. 很久以前大學寫GA時,自己想這個產生器想許03/10 17:09
3F→:久... 後來才想出一個簡便又不會重覆的方法03/10 17:09
4F→:原歸正題, 你是要紀錄所有不重覆的解嗎?03/10 17:10
6F推:2.1 與 2.2 會不會有交集部份? 也就是你確定 12!/12 是03/10 17:20
7F→:對的? (我沒仔細想過, 你覺得是就是了)03/10 17:21
8F→:permutation的問題, 要得到全部解, 也只能用窮舉法了吧.03/10 17:22
10F→:窮舉的好或壞, 就看怎麼過濾重覆解的手法了.03/10 17:23
13F推:我一直漏掉"使六芒星線上之數字總合完全相等" XDDD03/10 17:28
14F→:你可以先試跑 只有產生permutation的程式,重頭跑到底,看03/10 17:29
15F→:用不用 next_permutation, 用vector或new , 哪一種較快.03/10 17:30
16F→:當然,假如之前有定論了,就跳過上一行吧.03/10 17:31
23F推:目前12點的case,可以想像成兩個三角形,每點用兩次.03/10 17:38
25F→:但這每點用2次, 應該不適用在更大的問題上.03/10 17:38
26F推:原PO可以試著用取出一個點的想法,去拆解問題,想出它的限03/10 17:42
27F→:制式. (你應該是應數/純數/純演算法的研究生吧 XD)03/10 17:43
28F→:permutation+constraints 從古代到現在一直都很好玩 XDD03/10 17:44
29F推:(12*11*10*9) / (4*3*2*1) = 99*503/10 17:56
30F→:不會失望啊, 反正是在做這種問題的, 什麼系所倒還好.03/10 17:57