Java中StringBuilder的7-1 jmu-Java-02基本语法应用有哪些？

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javaimport java.util.Scanner;

public class Main { private static Scanner in;

public static void main(String[] args) { int n, x, y; in=new Scanner(System.in); while (true) { StringBuilder s=new StringBuilder(); n=in.nextInt(); x=in.nextInt(); y=in.nextInt(); // Add your logic here } }}

import java.util.Scanner; public class Main { private static Scanner in; public static void main(String[] args) { int n,x,y; in=new Scanner(System.in); while(true) { StringBuilder s=new StringBuilder(""); n=in.nextInt(); x=in.nextInt(); y=in.nextInt(); for(int i=0;i 0) { System.out.println(s.substring(x,y)); } else if(x>y&&y>0) { System.out.println(s.substring(y,x)); } } } }