RMQ演算法,是一個快速求區間最值的離線演算法,預先處理時間複雜度O(n*log(n)),查詢O(1),所以是一個很快速的演算法,當然這個問題用線段樹同樣能夠解決。 問題:給出n個數ai,讓你快速查詢某個區間的的最值。 演算法分類:DP+位元運算 演算法分析:這個演算法就是基於DP和位元運算符,我們用dp【i】【j】表示從第 i 位開始,到第 i + 2^j -1 位的最大值或者最小值。 那麼我求dp【i】【j】的時候可以把它分成兩部分,第一部分從 i 到 i
原題: Queues and Priority Queues are data structures which are known to most computer scientists. The Team Queue, however, is not so well known, though it occurs often in everyday life. At lunch time the queue in front of the Mensa is a team queue,
ARM嵌入式編程中需要設定堆棧的空間大小,設定堆棧空間大小是有一個函數來實現的,這個函數就是:__user_initial_stackheap。下面我將這個函數的內容拷貝出來:/* * This can be defined to override the standard memory models' way * of determining where to put the initial stack and heap. * * The input parameters R0 and R2
Connection Closed Gracefully溫和的關閉串連 Many Indy users are annoyed by the EIdConnClosedGracefully exception that is raised with Indy servers, especially the HTTP and other servers. EIdConnClosedGracefully is an exception signaling that the connection
USB協議的第9章講到USB可見裝置狀態[Universal Serial Bus Specification, Section 9.1.1, Pg 239],分為串連(Attached),上電(Powered),預設(Default),地址(Address),配置(Configured)和掛起(Suspended)6個狀態。所謂可見,即USB系統和主機可見的狀態,其他狀態屬於USB裝置內部而不可見。其中有關電源的,大致可分下面三類:1. 串連狀態(Attached):裝置串連,但未提供電源。2
NfsenBefore I begin, let me remind you of the excellent documentation of nfdump and nfsen on the following pages:http://nfdump.sourceforge.net/http://nfsen.sourceforge.net/The only reason I've compiled this step-by-step guide is because I tendency