public static void main(String[] args){ //這裡是初始值 Set set= new TreeSet(); for(int i=0;i<3500;i++){ set.add(i); } //這裡開始主要判斷式 ArrayList newSet = new ArrayList(set); Set setSet = new HashSet(); int st = 0; int size= set.size(); //這個迴圈還是免不了的。 while(size>1000){ setSet.add(new TreeSet(newSet.subList(st, st+1000))); st+=1000; size-=1000; } setSet.add(new TreeSet(newSet.subList(st, set.size())));
//以下是列印值 Iterator iter = setSet.iterator(); while(iter.hasNext()){ Set s = (Set)iter.next(); System.out.println("Start...........("+s.size()+")"); Iterator sIter= s.iterator(); while(sIter.hasNext()){ System.out.println(sIter.next()); } System.out.println("----------END--------------"); } }
ArrayList list = new ArrayList(set); Set set1 = new HashSet(list.subList(0,1000)); Set set2 = new HashSet(list.subList(1000,2000)); Set set3 = new HashSet(list.subList(2000,3000));
用iterator 和一个变量记录遍历的次数
public static void main(String[] args){
//這裡是初始值
Set set= new TreeSet();
for(int i=0;i<3500;i++){
set.add(i);
}
//這裡開始主要判斷式
ArrayList newSet = new ArrayList(set);
Set setSet = new HashSet();
int st = 0;
int size= set.size();
//這個迴圈還是免不了的。
while(size>1000){
setSet.add(new TreeSet(newSet.subList(st, st+1000)));
st+=1000;
size-=1000;
}
setSet.add(new TreeSet(newSet.subList(st, set.size())));
//以下是列印值
Iterator iter = setSet.iterator();
while(iter.hasNext()){
Set s = (Set)iter.next();
System.out.println("Start...........("+s.size()+")");
Iterator sIter= s.iterator();
while(sIter.hasNext()){
System.out.println(sIter.next());
}
System.out.println("----------END--------------");
}
}
Set set1 = new HashSet(list.subList(0,1000));
Set set2 = new HashSet(list.subList(1000,2000));
Set set3 = new HashSet(list.subList(2000,3000));