Hello LinkedList
Rencently, I'm checking the sources of JAVA SDK, the LinkedList got me.
Here is it.
import java.util.ArrayList;
import java.util.Comparator;
import java.util.LinkedList;
import java.util.function.Consumer;
/**
* PrjName:JavaTest
* Descrip:
* <p>
* Modification History:
* Date Author Version
* ==========================================
* 17-3-6 下午8:36
* info:
* _________________________________________
*/
public class TList {
public static void main(String[] args){
// TArrayList();
TLinkedList();
}
static void TArrayList() {
ArrayList<String> arrayList = new ArrayList<>(10);
for (int i = 0; i < 9;i++) {
arrayList.add("a" + (9 - i));
}
//print
for (int i = 0; i < arrayList.size(); i++) {
System.out.print(String.format("%s ", arrayList.get(i)));
}
System.out.println("");
//排序比较器
Comparator<String> cmp = new Comparator<String>() {
@Override
public int compare(String o1, String o2) {
return o1.compareTo(o2);
}
};
arrayList.sort(cmp);
//print
for (int i = 0; i < arrayList.size(); i++) {
System.out.print(String.format("%s ", arrayList.get(i)));
}
System.out.println("");
//操作器
Consumer<String> consumer1 = new Consumer<String>() {
@Override
public void accept(String s) {
System.out.println(s+1);
}
};
Consumer<String> consumer2 = new Consumer<String>() {
@Override
public void accept(String s) {
System.out.println("--"+s);
}
};
//操作器链接
arrayList.forEach(consumer1.andThen(consumer2).andThen(consumer1));
//print
for (int i = 0; i < arrayList.size(); i++) {
System.out.print(String.format("%s ", arrayList.get(i)));
}
System.out.println("");
//================================linkedList
LinkedList<String> linkedList = new LinkedList<String>();
for (int i = 0; i < 10; i++) {
linkedList.add("b"+i);
}
}
static void TLinkedList() {
//双向链表 也实现了Stack Queue的接口
LinkedList<String> list = new LinkedList<>();
list.add("1");
list.add("2");
list.add("3");
for (String s : list) {
System.out.println(s);
}
list.remove();
list.forEach(p->System.out.println(p));
System.out.println("---------");
//Queue
list.addFirst("4");
list.addFirst("5");
list.forEach(p->System.out.println(p));
System.out.println("---------");
System.out.println(list.removeLast());
System.out.println(list.removeLast());
System.out.println("---------");
//Stack
list.clear();
list.push("1");
list.push("2");
list.push("3");
while (!list.isEmpty()) {
System.out.println(list.pop());
}
}
}```
Interesting
I will follow you to see your future posts!
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Well written