小红帽要回外婆家，但是大灰狼得知消息后，想通过下属抓小红帽。小红帽得知消息后，想避开大灰狼所在城市，并且要尽快到外婆家去。求最短路径-Find out the most short circuit between each spots of little red riding hood will go back to grandma s house, but the Wolf that news, and want to subordinate catch little red riding h

香农编码属于不等长编码，通常将经常出现的消息编成短码，不常出现的消息编成长码。从而提高通信效率。 -Shannon coding are of unequal length encoding, the message will usually appear regularly compiled a short code, infrequent message encoding growth yards. Thereby improving communication effici