Re: [閒聊] 資訊處理已哭
※ 引述《RedJessy (Jessy)》之銘言:
: 請問這次高考的資料結構 有高手可以分享一下嗎 ?
: 第一題 不太會推..只有背他們的大小關係 就掰上去 不知道有沒有同情分數ˊˋ
n^2LOG(N!)<n^2(LOGN)!
=> log(n!)<(logn)!
=>log(1*2*3*...*n)<log1*log2*...*logn
=>log1+log2+...+logn<log1*log2*...*logn
: 第二題 是用數學歸納法嗎 ?
n=2 0--0 2個點分支度都為1得證
設n<k 至少2個點分支度都為1
當n=k 將節點為n的tree的內部節點和樹葉節點分兩個集合
得內部節點節點小於k且樹葉節點為獨立的1個點分支度為0
將內部節點和樹葉節點用1個邊連接起來,原來的樹葉節點
為分支度為1得證
(二)反證法
設每個節點分支度>=2,假設都為2則n個節點有總分支為2n
因為為無向圖所以每個節點的分支度皆算了2次所以 總分支度為2n/2=n
和(一)矛盾所以具有n個節點n>1恰好有n-1個邊
: 第三題 我是把Dijkstar演算法簡單的寫一寫
(一)假設每個邊權重都一樣,用dfs找最短路徑O(n)
(二)就Dijkstar寫給他
: 第四題和第五題沒想法...
第四題
用avl tree建m個值的avltree,再給比root大向右邊找比root小向左邊找的演算法
第五題
(一)用最壞的情況說(但回家想想好像會比n/2大)
(二)n分群分成m群找出中間值logn 再從這些值找中間值
: 還有程式語言最後一題 (智慧卡進出系統)
: 是要將3個class的內容都寫出來嗎 ? 然後順便改寫toString()?
這是我寫的是個人的想法請多多指教謝謝
--
※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 1.161.158.134
※ 文章網址: https://www.ptt.cc/bbs/Examination/M.1437055183.A.6EC.html
推
07/16 22:05, , 1F
07/16 22:05, 1F
推
07/16 22:07, , 2F
07/16 22:07, 2F
→
07/16 22:08, , 3F
07/16 22:08, 3F
→
07/16 22:09, , 4F
07/16 22:09, 4F
→
07/16 22:10, , 5F
07/16 22:10, 5F
→
07/16 22:13, , 6F
07/16 22:13, 6F
→
07/16 22:14, , 7F
07/16 22:14, 7F
推
07/16 22:16, , 8F
07/16 22:16, 8F
→
07/16 22:16, , 9F
07/16 22:16, 9F
→
07/16 22:16, , 10F
07/16 22:16, 10F
推
07/16 22:18, , 11F
07/16 22:18, 11F
→
07/16 22:18, , 12F
07/16 22:18, 12F
推
07/16 22:18, , 13F
07/16 22:18, 13F
推
07/16 22:24, , 14F
07/16 22:24, 14F
→
07/16 22:25, , 15F
07/16 22:25, 15F
推
07/16 22:27, , 16F
07/16 22:27, 16F
→
07/16 22:27, , 17F
07/16 22:27, 17F
→
07/16 22:28, , 18F
07/16 22:28, 18F
→
07/16 22:28, , 19F
07/16 22:28, 19F
推
07/16 22:42, , 20F
07/16 22:42, 20F
→
07/16 22:42, , 21F
07/16 22:42, 21F
→
07/16 22:46, , 22F
07/16 22:46, 22F
推
07/16 23:03, , 23F
07/16 23:03, 23F
→
07/16 23:09, , 24F
07/16 23:09, 24F
→
07/16 23:12, , 25F
07/16 23:12, 25F
→
07/16 23:12, , 26F
07/16 23:12, 26F
→
07/16 23:33, , 27F
07/16 23:33, 27F
→
07/16 23:33, , 28F
07/16 23:33, 28F
→
07/16 23:34, , 29F
07/16 23:34, 29F
→
07/16 23:35, , 30F
07/16 23:35, 30F
→
07/16 23:35, , 31F
07/16 23:35, 31F
→
07/16 23:35, , 32F
07/16 23:35, 32F
→
07/16 23:36, , 33F
07/16 23:36, 33F
→
07/16 23:48, , 34F
07/16 23:48, 34F
→
07/16 23:50, , 35F
07/16 23:50, 35F
→
07/16 23:52, , 36F
07/16 23:52, 36F
→
07/16 23:53, , 37F
07/16 23:53, 37F
→
07/16 23:53, , 38F
07/16 23:53, 38F
→
07/16 23:54, , 39F
07/16 23:54, 39F
→
07/16 23:55, , 40F
07/16 23:55, 40F
→
07/16 23:59, , 41F
07/16 23:59, 41F
→
07/17 00:00, , 42F
07/17 00:00, 42F
→
07/17 00:01, , 43F
07/17 00:01, 43F
→
07/17 00:03, , 44F
07/17 00:03, 44F
→
07/17 00:04, , 45F
07/17 00:04, 45F
→
07/17 00:06, , 46F
07/17 00:06, 46F
→
07/17 00:09, , 47F
07/17 00:09, 47F
→
07/17 00:09, , 48F
07/17 00:09, 48F
推
07/17 00:17, , 49F
07/17 00:17, 49F
推
07/17 00:19, , 50F
07/17 00:19, 50F
→
07/17 00:49, , 51F
07/17 00:49, 51F
→
07/17 00:52, , 52F
07/17 00:52, 52F
→
07/17 00:54, , 53F
07/17 00:54, 53F
→
07/17 00:57, , 54F
07/17 00:57, 54F
推
07/17 01:03, , 55F
07/17 01:03, 55F
→
07/17 01:04, , 56F
07/17 01:04, 56F
→
07/17 01:18, , 57F
07/17 01:18, 57F
→
07/17 01:28, , 58F
07/17 01:28, 58F
推
07/17 03:02, , 59F
07/17 03:02, 59F
→
07/17 03:08, , 60F
07/17 03:08, 60F
→
07/17 06:16, , 61F
07/17 06:16, 61F
→
07/17 06:17, , 62F
07/17 06:17, 62F
→
07/17 06:19, , 63F
07/17 06:19, 63F
→
07/17 06:20, , 64F
07/17 06:20, 64F
→
07/17 07:46, , 65F
07/17 07:46, 65F
→
07/17 08:34, , 66F
07/17 08:34, 66F
→
07/17 09:49, , 67F
07/17 09:49, 67F
→
07/17 09:50, , 68F
07/17 09:50, 68F
→
07/17 09:55, , 69F
07/17 09:55, 69F
討論串 (同標題文章)
本文引述了以下文章的的內容:
閒聊
9
42
以下文章回應了本文:
閒聊
7
30
完整討論串 (本文為第 4 之 7 篇):
閒聊
59
125
閒聊
2
5
閒聊
9
42
閒聊
13
69
閒聊
7
30
閒聊
0
2