此类问题的已有类似工作就是LED屏幕的显示，完成此题目主要改进是在其原理上尽可能简化代码，从而完成从控制台输入字母或字符串之后用*构成字母或字符串并显示出来的目标。-Such problems have similar work is the LED screen display, complete this subject main improvement is to simplify the code as much as possible on the principle, so that