代入法的啟發(fā)示搜索 我的代碼實(shí)現(xiàn)是:按照自然語(yǔ)言各字母出現(xiàn)頻率的大小從高到低(已經(jīng)有人作國(guó)統(tǒng)計(jì)分析了)先生成一張字母出現(xiàn)頻率統(tǒng)計(jì)表(A)--------(e),(t,a,o,i,n,s,h,r),(d,l),(c,u,m,w,f,g,y,p,b),(v,k,j,x,q,z) ,再對(duì)密文字母計(jì)算頻率,并按頻率從高到低生成一張輸入密文字母的統(tǒng)計(jì)表(B),通過(guò)兩張表的對(duì)應(yīng)關(guān)系,不斷用A中的字母去替換B中的字母,搜索不成功時(shí)就回退,在這里回朔是一個(gè)關(guān)鍵。
上傳時(shí)間: 2015-10-24
上傳用戶:wanqunsheng
黑白點(diǎn)的匹配貪心算法 設(shè)平面上分布著n個(gè)白點(diǎn)和n個(gè)黑點(diǎn),每個(gè)點(diǎn)用一對(duì)坐標(biāo)(x, y)表示。一個(gè)黑點(diǎn)b=(xb,yb)支配一個(gè)白點(diǎn)w=(xw, yw)當(dāng)且僅當(dāng)xb>=xw和yb>=yw。若黑點(diǎn)b支配白點(diǎn)w,則黑點(diǎn)b和白點(diǎn)w可匹配(可形成一個(gè)匹配對(duì))。在一個(gè)黑點(diǎn)最多只能與一個(gè)白點(diǎn)匹配,一個(gè)白點(diǎn)最多只能與一個(gè)黑點(diǎn)匹配的前提下,求n個(gè)白點(diǎn)和n個(gè)黑點(diǎn)的最大匹配對(duì)數(shù)。
上傳時(shí)間: 2015-10-25
上傳用戶:zhliu007
This designs uses a Nios II system to demonstrate how to read from the SD card. The software reads WAV files from the SD card and plays it through the LINE OUT line. Simply put a SD card into the slot on the board and connect some speakers to the LINE OUT port.Preparing the SD card
標(biāo)簽: demonstrate software designs system
上傳時(shí)間: 2015-10-26
上傳用戶:lizhen9880
限電器硬件板應(yīng)用,適合于上千W的功率 程序很少的噢
上傳時(shí)間: 2015-11-03
上傳用戶:nairui21
This book has been updated for the new Java version, J2SE 5.0, and works its way through a project with requirements and structure similar to the project you ll encounter in the SCJD exam
標(biāo)簽: updated project through version
上傳時(shí)間: 2015-11-08
上傳用戶:csgcd001
源碼開(kāi)放的加密軟件。最新版本!!可以在一個(gè)文件內(nèi)部創(chuàng)建多樣化的加密磁盤并且將其配置為一個(gè)可以通過(guò)一個(gè)驅(qū)動(dòng)器盤符訪問(wèn)的虛擬磁盤.任何存儲(chǔ)在該虛擬磁盤上的文件可以被自動(dòng)地實(shí)時(shí)加密,并且只有當(dāng)使用正確的密碼或者密匙配置時(shí)才可以訪問(wèn). TrueCrypt 支持多樣化的加密算法,包括 AES-256, Blowfish (448-bit key), CAST5, Serpent, Triple DES 和 Twofish.其它的功能包括 FAT32 或者 NTFS 格式的支持,隱藏卷。
上傳時(shí)間: 2015-11-08
上傳用戶:dancnc
The Game: Make the snake grow longer by directing it to the food. Extra bonus points are given from hearts, eat them as fast as possible as amount of bonus points decreases with time. Higher level gives more points for the food but will also make it tougher to steer a long snake as speed increaces. Five different mazes as well as play w/o maze are possible.
標(biāo)簽: the directing longer points
上傳時(shí)間: 2013-12-20
上傳用戶:璇珠官人
在參考書目一這本書的附錄A,在單機(jī)中使用,但是最後在WIN95的光碟中找不到IENPSTUB.DLL及MSLOCUSR.DLL二個(gè)檔案,不知何故,可否告訴我如何解決這個(gè)問(wèn)題? 我使用的是Win95的平臺(tái),故須安裝PWS,但是卻無(wú)法安裝它,畫面出現(xiàn)是要求IE 4.01以上的版本,我使用的是IE5為何還是無(wú)法安裝呢?
標(biāo)簽:
上傳時(shí)間: 2015-11-13
上傳用戶:lijianyu172
DOSBox emulates a full x86 pc with sound and dos. Its main use is to run old dosgames on platforms which don t have dos(win2K/XP/linux/FreeBSD/Mac OS X)
標(biāo)簽: platforms emulates dosgames DOSBox
上傳時(shí)間: 2015-11-14
上傳用戶:TRIFCT
集裝箱的裝箱問(wèn)題 給定一個(gè)集裝箱,其長(zhǎng)為L(zhǎng),寬為W和高為H,現(xiàn)有一批圓柱形木材,每根木材的長(zhǎng)均為L(zhǎng),但是半徑不同,設(shè)第i根木材半徑為ri。問(wèn)如何裝箱,使得集裝箱的空間利用率最高?
標(biāo)簽: 集裝箱
上傳時(shí)間: 2013-12-24
上傳用戶:二驅(qū)蚊器
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