JAVA代码问题

public class ll
{
//原始数组
String Mmap[]={"∷","∷","∷","∷","∷","★","◎",
"∷","∷","■","∷","∷","∷","★","∷","∷","∷","★","∷"};
//新建数组
String Map[]=new String[100];
int s1;
int s2;
//带参数方法，改变特定下标位置的值
public void showmap(int st1,int st2)
{
this.s1=st1;
this.s2=st2;
//每次给Map重新赋值
Map=Mmap;
for(int i=0;i<Map.length;i++)
{
if(i==s1&&i==s2)
Map[i]="@@";
else if(i==s1)
Map[i]="A";
else if(i==s2)
Map[i]="B";
System.out.print(Map[i]);
}
System.out.println("\n");
}
//程序入口
public static void main(String[] args)
{
ll l=new ll();

l.sho

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