the program inserts a value val-up keyboard in Table A in order to obtain an array of N 1 value sorted

当你按下键盘上的某个键时，该程序会在控制台输出其键盘码，使用该程序可以让你熟悉键盘值对应的键盘码-When you press a key on the keyboard, the program code in the console output of the keyboard, use the program allows you to know the value of the corresponding keyboard code keyboard