猜数字游戏1.　　随机生成4个0到9的整数，组成一个序列（使用LinkedList<Integer>存储）例如：3 6 4 4System.out.println((int)(Math.random(0*4)))2.　　然后要求用户循环猜这4个数子，在用户每猜一次之后，提示用户有几个数字的位置正确了。

例如：用户输入3 7 2 4 （3和4的位置正确了），则提示用户有2个数字正确。3.　　使用LinkedList存储用户每次猜测是数字组合。用户可以随时查看之前自己的输入

例如：3 7 2 4

5 7 2 4

……4.　　用户猜到第10次时，就没有机会，提示猜测失败。

-Guessing game a randomly generated four integers from 0 to 9 to form a sequence (using the LinkedList <Integer> Storage) such as: 3 6 4 4System.out.println ((int) (Math.random (0* 4))) 2. And then require the user to guess the four the number of sub-cycle, once the user after each guess, prompts the user to have several digit position correct. For example: user input 3724 (3 and 4 in the correct position a), then prompts the user to have two numbers are correct. 3 using LinkedList stores each time a user to guess a digital portfolio. Before users can view their input example: 37,245,724 ... ... 4. When the user guessed the 10th, there is no chance, prompted speculation failed.