1.　　有一个南北向的桥，只能容纳一个人，现桥的两边分别有10人和12人，编制一个多线程程序让这些人到达对岸，每个人用一个线程表示，桥为共享资源。

2.　　利用多线程编写龟兔赛跑程序。

 　　乌龟：速度慢，休息时间短；

 　　兔子：速度快，休息时间长；

-1. There is a north-south bridge can only accommodate one person is on both sides of the bridge 10 and 12 respectively, the preparation of a multi-threaded program to allow these people to reach the other side, each with a thread that bridge for the shared resource. 2. Using multi-threaded programs written Tortoise and the Hare. 　tortoise: slow and short rest periods　　rabbit: fast, rest a long time