原文:[LeetCode] Erect the Fence 豎立柵欄

There are some trees, where each tree is represented by x,y coordinate in a two dimensional garden. Your job is to fence the entire garden using the minimum length of rope as it is expensive. The gar ...

2017-10-27 23:54 2 2367 推薦指數:

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柵欄密碼(The Rail-Fence Cipher)

也稱柵欄易位(Columnar Transposition),即把將要傳遞的信息中的字母交替排成上下兩行,再將下面一行字母排在上面一行的后邊,從而形成一段密碼。柵欄密碼是一種置換密碼。 例如密文:TEOGSDYUTAENNHLNETAMSHVAED 解密過程:先將密文分為兩行 T E O G S ...

Tue Sep 24 22:53:00 CST 2013 0 2966
柵欄密碼(The Rail-Fence Cipher)詳解

最近訓練CTF的時候,發現密碼學這塊的知識不太系統,所以自己接下來會陸陸續續整理出來 今天學習了柵欄密碼,BugkuCTF里面的一道叫做“聰明的小羊”的題就與柵欄密碼相關 特點 柵欄密碼與其他的密碼加密方式不太一樣,它是直接對明文中的內容進行置換操作 並不涉及明文中內容的改變! 加密方式 ...

Tue Mar 24 06:03:00 CST 2020 0 11013
[LeetCode] Paint Fence

Problem Description: There is a fence with n posts, each post can be painted with one of the k colors. You have to paint all the posts ...

Sat Sep 05 20:24:00 CST 2015 0 3980
[LeetCode] 276. Paint Fence 粉刷籬笆

There is a fence with n posts, each post can be painted with one of the k colors. You have to paint all the posts such that no more than two ...

Tue Mar 01 23:31:00 CST 2016 2 12780
fence的使用

一、創建一個集群及pcs安裝 1、真機切換root用戶下 2、打開PC管理器視圖 1、安裝pcs,關掉防 ...

Mon Sep 26 06:43:00 CST 2016 0 3297
Fence 設備

RHCS中必須有Fence設備,在設備為知故障發生時,Fence負責讓占有浮動資源的設備與集群斷開。 REDHAT的fence device有兩種, 內部fence設備: IBM RSAII卡,HP的iLO卡,Dell的DRAC,還有IPMI的設備; 外部fence 設備: UPS ...

Wed Jan 27 19:58:00 CST 2016 0 1960
LaTeX豎立公式符號

1.LaTeX技巧668:LaTeX如何實現直立積分號 2.如何輸出直立的偏微分或正體偏微分符號? 3.如何單獨指定積分號的字體 前文LaTeX技巧668 ...

Wed Sep 26 07:20:00 CST 2018 0 1503
柵欄密碼

柵欄密碼 (The rail fence cipher) write by asakuras 簡單來說,柵欄密碼就是把一個明文(去掉空格)分成n組,每組m個,然后一定的排序方法(看下面例子)來將這些字符重新組合。通過m的大小稱其為m欄柵欄密碼,比較常見的m取2,即2欄柵欄密碼。 舉例 ...

Thu Apr 11 21:18:00 CST 2019 0 1806
 
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