北京大學(xué)ACM比賽題
The game of Scrabble is played with tiles. A tile either has a single letter written on it, or it is blank. In the latter case, the tile may be used to represent a letter of your choice. On your turn, you arrange the tiles to form a word. Each tile may be used at most once, but not all tiles need to be used. Given several Scrabble tiles and a dictionary, determine how many words in the dictionary can be formed using the given Scrabble tiles.
CAS在Tomcat中實(shí)現(xiàn)單點(diǎn)登錄項(xiàng)目,單點(diǎn)登錄（Single Sign On , 簡(jiǎn)稱 SSO ）是目前比較流行的服務(wù)于企業(yè)業(yè)務(wù)整合的解決方案之一， SSO 使得在多個(gè)應(yīng)用系統(tǒng)中，用戶只需要登錄一次就可以訪問(wèn)所有相互信任的應(yīng)用系統(tǒng)。CAS(Central Authentication Service)是一款不錯(cuò)的針對(duì) Web 應(yīng)用的單點(diǎn)登錄框架，本文介紹了 CAS 的原理、協(xié)議、在 Tomcat 中的配置和使用，對(duì)于采用 CAS 實(shí)現(xiàn)輕量級(jí)單點(diǎn)登錄解決方案的入門讀者具有一定指導(dǎo)作用。
ADM6993F/FXFiber to Fast Ethernet Converter (TS1000 CPE Complied)
The ADM6993F/FX is a single chip integrating two 10/100 Mbps MDIX TX/FX transceivers, a three-port 10/100M Ethernet L2 switch controller, and one OAM engine to meet demanding applications, including Fiber-to-Ethernet media converters, especially the fiber to the home (FTTH) media converters. The ADM6993F/FX feature set includes link pass through (LPT), TS1000 OAM frame receiving/processing/transmitting, programmable link status LED display, various loop-back modes, and one configurable MII ports for snooping/inserting OAM frame from/to 100Fx. The ADM6993FX is the environmentally friendly “green” package version.
The P89LPC938 is a single-chip microcontroller, available in low cost packages, based on
a high performance processor architecture that executes instructions in two to four clocks,
six times the rate of standard 80C51 devices. Many system-level functions have been
incorporated into the P89LPC938 in order to reduce component count, board space, and
system cost.
