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所以Im做使用冒泡排序和compareTo方法一种方法计划返回闪烁的光标
然而,由于某些原因,当我运行它编译的程序,任何确实没有错误,并显示在程序中闪烁的光标(就好像你要输入什么东西;你可以,只要你按下输入什么都不会发生),并且这个光标保持闪烁。
这里有什么问题? (根据老师的指令代码)
public static void sort(ArrayList al)
{
Person p,p1,p2;
String a1,a2;
boolean flag = true;
System.out.println("Database will be sorted acc to ID ");
System.out.println();
do
{
flag = false;
for (int i=0;i<al.size()-1;i++)
{
p = (Person)al.get(i);
a1=((Person)al.get(i)).personID;
a2=((Person)al.get(i+1)).personID;
if (a1.compareTo(a2) > 0){
p1= (Person)al.get(i);
p2 =(Person)al.get(i+1);
}
}
}
while (flag = true);
if (flag = false)
{
for (int i = 0; i < al.size(); i++)
{
p = (Person) al.get(i);
System.out.println("----------" + (i+1) + "-----------");
System.out.println("ID Number: "+ p.personID);
System.out.println("Name: "+ p.name);
System.out.println("Day of Birth: " +p.dayDOB);
System.out.println("Month of Birth: " +p.monthDOB);
System.out.println("Year of Birth: " +p.yearDOB);
System.out.println("Telephone Number: " +p.telNum);
System.out.println("");
}
}