字符串转化为数组
一、 s.spilt()
Scanner in = new Scanner(System.in);
String s = in.nextLine();
String[] a = s.spilt("");
Arrays.toString(a);
二、 toCharArray()
Scanner in = new Scanner(System.in);标签：nextLine,Scanner,System,转化,数组,字符串,String From： https://www.cnblogs.com/woofcrab/p/17255762.html
String s = in.nextLine();
char ch = s.toCharArray();