Question

怎么把linkedlist里面的元素倒置过来

将里面的头尾互换
+638472354

Answer 1

要自己做可以：
public class Baidu {
public static void main(String args[]) {
LinkedList<String> from = new LinkedList<String>();
LinkedList<String> to = new LinkedList<String>();
from.add("1");
from.add("2");
from.add("3");
Iterator<String> it = from.iterator();
printList(from);
while(it.hasNext()) {
to.addFirst(it.next());
}
printList(to);
}

public static void printList(LinkedList<String> ll) {
Iterator<String> it = ll.iterator();
while(it.hasNext()) {
System.out.println(it.next());
}
}

Answer 2

用guava com.google.common.collect.Lists
reverse(List<T> list)