如何编写一个java程序来接受一个人的全名并输出带姓名首字母的姓氏？

Question

我写了以下代码.如果在姓氏之前只有两个首字母,则此方法有效.如何修改它以使用3个或更多首字母.例如:

Input: ABC EFG IJK XYZ

Output I want is: A E I XYZ

这是我的代码:

import java.util.*;

class Name{
    public static void main(String[] args){
        System.out.println("Please enter a Firstname , MiddleName & Lastname separated by spaces");
        Scanner sc = new Scanner(System.in);
        String name = sc.nextLine();
        System.out.println(name);
        String[] arr = name.split(" ",3);
        System.out.println(arr[0].charAt(0)+" "+arr[1].charAt(0)+" "+arr[2]);
    }
} 

Answer 1

使用循环并且不要将分割限制为 3 ：

{
      System.out.println("Please enter a Firstname , MiddleName & Lastname separated by spaces");
      Scanner sc = new Scanner(System.in);
      String name = sc.nextLine();
      System.out.println(name);
      String[] arr = name.split(" ");
      // print all the initials
      for (int i = 0; i < arr.length - 1; i++) {
          System.out.print(arr[i].charAt(0) + " ");
      }
      // print the last name
      System.out.println(arr[arr.length-1]);
}