下面的代码从键盘输入字符，直到遇到#号结束，统计字母，数字的个数，补充完成代码：public static void main(String[] args) throws IOException {char ch;int ziMu=0;//字母int shuZi = 0;//数字while(true){ch = (char)System.in.read();if(ch=='#'){___________________;}if(ch>='A'&&ch<='Z'|| ______________){_______________________;}else if(ch>='0'&&ch<='9'){_________;}}}