diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..73f69e0958611ac6e00bde95641f6699030ad235
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
+# Editor-based HTTP Client requests
+/httpRequests/
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000000000000000000000000000000000000..d4b854b8d4fa7be1ca526617ed1590623b835f8c
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,9 @@
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000000000000000000000000000000000000..a9a967ebf636c25d481adbb480e9fb8fb3f25eb1
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000000000000000000000000000000000000..35eb1ddfbbc029bcab630581847471d7f238ec53
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/DoubleLinkedList.java b/DoubleLinkedList.java
new file mode 100644
index 0000000000000000000000000000000000000000..6dafcc0e40c3f1acbf9ea93e8a783cb60981e5b7
--- /dev/null
+++ b/DoubleLinkedList.java
@@ -0,0 +1,85 @@
+public class DoubleLinkedList {
+ private DoubleNode head;
+
+ public DoubleLinkedList() {
+ head=null;
+ }
+
+ //双向链表的插入
+ public void addToFront(E item) {
+ DoubleNode newNode = new DoubleNode(item);
+ if (this.head == null) this.head = newNode;
+ else {
+ this.head.pre = newNode;
+ //把this.head.next节点往下移动
+ newNode.next = this.head;
+ }
+ //把插入的节点作为新的节点
+ this.head = newNode;
+
+ }
+
+ // 双向链表尾巴插入
+ public void addToRear(E item) {
+ DoubleNode newNode = new DoubleNode(item);
+ if (this.head == null) {
+ this.head = newNode;
+ } else {
+
+ DoubleNode temp = this.head;
+ while(temp.next != null){
+ temp = temp.next;
+ }
+ temp.next = newNode;
+ newNode.pre=temp;
+ }
+
+ }
+ // 删除头节点的位置
+ public void deleteItem(int index){
+ if (index<0 || index>size()-1){
+ System.out.println("删除节点不在链表内");
+ }
+ if (index == 0){
+ head = head.next;
+ return;
+ }
+ int position = 0;
+ DoubleNode cur = head;
+ DoubleNode pre =null;
+ while (cur!=null){
+ if (position==index){
+ pre.next = cur.next;
+ cur.next.pre=pre;
+ //把要删除的结点置空
+ cur.next = null;
+ return;
+ }
+ pre = cur;
+ cur = cur.next;
+ position++;
+ }
+ }
+ //判断链表插入的位置
+ public int size(){
+ int size = 0;
+
+ DoubleNode temp = this.head;
+ while(temp.next != null){
+ temp = temp.next;
+ size++;
+ }
+ return size;
+ }
+
+
+
+ public void print() {
+ DoubleNode temp = this.head;
+ while(temp.next != null){
+ System.out.print(temp.item + " -> ");
+ temp = temp.next;
+ }
+ System.out.println(temp.item);
+ }
+}
diff --git a/DoubleNode.java b/DoubleNode.java
new file mode 100644
index 0000000000000000000000000000000000000000..b3bb504db2a17dd9e5292de41868f2bdff5e43c7
--- /dev/null
+++ b/DoubleNode.java
@@ -0,0 +1,9 @@
+public class DoubleNode {
+ E item;
+ DoubleNode next = null; //用来指向下一个结点
+ DoubleNode pre=null;//用来指向前一个结点
+
+ DoubleNode(E item) {
+ this.item = item;
+ }
+}
diff --git a/LinkedList.java b/LinkedList.java
index 7836598c18ca0b770825087dc2deff812a699ec6..3792a4dd6ebe84b28ade5ccf820d717768e7e604 100644
--- a/LinkedList.java
+++ b/LinkedList.java
@@ -2,9 +2,9 @@ public class LinkedList {
private Node head;
public LinkedList() {
- head = null;
+ head = null;
}
-
+ //在头节点插入元素
public void addToFront(E item) {
Node node = new Node(item);
@@ -17,21 +17,135 @@ public class LinkedList {
}
}
-
+ //在尾节点插入元素
public void addToRear(E item) {
Node newNode = new Node(item);
if (this.head == null) {
this.head = newNode;
} else {
-
+
Node temp = this.head;
while(temp.next != null){
- temp = temp.next;
+ temp = temp.next;
}
temp.next = newNode;
}
}
+ //判断链表插入的位置
+ public int size(){
+ int size = 0;
+
+ Node temp = this.head;
+ while(temp.next != null){
+ temp = temp.next;
+ size++;
+ }
+ return size;
+ }
+ // 在任意位置插入节点
+ public void addItem(E item,int index){
+ if (index<0 || index>size()){
+ System.out.println("输入的节点有误");
+ return;
+ }
+ if (index==0){
+ //插入到链表头部
+ this.addToFront(item);
+
+ }else if(index==size()){
+ this.addToRear(item);
+ }else {
+ //插入到中间的位置
+ Node newnode = new Node(item);
+ int position = 0;
+ Node cur = this.head;
+ Node pre = null;
+ while (cur!=null){
+ if (position==index){
+ newnode.next = cur;
+ pre.next = newnode;
+ return;
+ }
+ pre = cur;
+ cur=cur.next;
+ position++;
+ }
+
+ }
+ }
+
+ // 删除头节点的位置
+ public void deleteItem(int index){
+ if (index<0 || index>size()-1){
+ System.out.println("删除节点不在链表内");
+ }
+ if (index == 0){
+ head = head.next;
+ return;
+ }
+ int position = 0;
+ Node cur = head;
+ Node pre =null;
+ while (cur!=null){
+ if (position==index){
+ pre.next = cur.next;
+ //把要删除的结点置空
+ cur.next = null;
+ return;
+ }
+ pre = cur;
+ cur = cur.next;
+ position++;
+ }
+ }
+// public boolean compare(Node temp,Node newnode){
+// int index=1;
+// if (temp.item.equals(newnode.item)){
+//
+//
+// }
+//
+// }
+//
+
+ public void findItem(E item){
+ int index=1;
+ Node newnode = new Node(item);
+ Node temp = this.head;
+ while (temp.next!=null){
+ if (temp.item.equals(newnode.item)){
+ System.out.println("元素的位置："+index);
+ }
+ temp = temp.next;
+ index++;
+ }
+ if (temp.item.equals(newnode.item)){
+ System.out.println("元素的位置："+index);
+ }
+
+ }
+ //单链表的反转
+ public void reverse(){
+// 标记当前节点
+ Node cur = head;
+ //标记当前节点的前一个节点
+ Node pre = null;
+ Node temp;
+ while (cur!=null){
+ //保存当前节点的下一个格式
+ temp = cur.next;
+ //cur.next指向pre,指针顺序置换
+ cur.next = pre;
+ //pre、cur继续后移动
+ pre = cur;
+ cur = temp;
+ }
+ //最后一个结点变成新的节点
+ head = pre;
+ }
+
+
public void print() {
Node temp = this.head;
while(temp.next != null){
diff --git a/Main.java b/Main.java
index 057428817fa315cf419ab3ea8cc74615dbf94f39..60d7107c427f8c9c8b5818b323199648953a8124 100644
--- a/Main.java
+++ b/Main.java
@@ -1,10 +1,38 @@
class Main {
public static void main(String[] args) {
LinkedList ll = new LinkedList();
+// 在头节点插入
ll.addToFront(1);
ll.addToFront(2);
+
+// 在尾节点插入
ll.addToRear(3);
+// 单链表查找
+ ll.findItem(3);
+// 在中间节点插入
+// ll.addItem(4,2);
+
+// 删除头节点
+// ll.deleteItem(1);
+
+// 单链表反转
+// ll.reverse();
ll.print();
+
+
+//// 双向链表
+// DoubleLinkedList dl = new DoubleLinkedList();
+//// 在头节点添加
+// dl.addToFront(1);
+// dl.addToFront(3);
+// dl.addToFront(2);
+////在尾巴结点添加
+// dl.addToRear(5);
+// dl.addToRear(6);
+// dl.addToRear(7);
+//// 删除结点
+//// dl.deleteItem(1);
+// dl.print();
}
}
\ No newline at end of file
diff --git a/Node.java b/Node.java
index ed7a3524e3c608d2a479f484e240452ad34c5a51..fe64454a80aa32af96561d01573a106861693888 100644
--- a/Node.java
+++ b/Node.java
@@ -1,6 +1,6 @@
public class Node {
E item;
- Node next = null;
+ Node next = null;
Node(E item) {
this.item = item;
diff --git a/lec02-linkedlist.iml b/lec02-linkedlist.iml
new file mode 100644
index 0000000000000000000000000000000000000000..b107a2dd81165eaaf682ad3da030668b937fbb6c
--- /dev/null
+++ b/lec02-linkedlist.iml
@@ -0,0 +1,11 @@
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/out/production/lec02-linkedlist/.gitignore b/out/production/lec02-linkedlist/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..d160a7b219f7fd0ea93ad4761fc8bf451476c7f0
--- /dev/null
+++ b/out/production/lec02-linkedlist/.gitignore
@@ -0,0 +1,5 @@
+gen-branch.js
+package.json
+package-lock.json
+node_modules
+id.txt
diff --git a/out/production/lec02-linkedlist/.idea/.gitignore b/out/production/lec02-linkedlist/.idea/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..73f69e0958611ac6e00bde95641f6699030ad235
--- /dev/null
+++ b/out/production/lec02-linkedlist/.idea/.gitignore
@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
+# Editor-based HTTP Client requests
+/httpRequests/
diff --git a/out/production/lec02-linkedlist/.idea/misc.xml b/out/production/lec02-linkedlist/.idea/misc.xml
new file mode 100644
index 0000000000000000000000000000000000000000..d4b854b8d4fa7be1ca526617ed1590623b835f8c
--- /dev/null
+++ b/out/production/lec02-linkedlist/.idea/misc.xml
@@ -0,0 +1,9 @@
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/out/production/lec02-linkedlist/.idea/modules.xml b/out/production/lec02-linkedlist/.idea/modules.xml
new file mode 100644
index 0000000000000000000000000000000000000000..a9a967ebf636c25d481adbb480e9fb8fb3f25eb1
--- /dev/null
+++ b/out/production/lec02-linkedlist/.idea/modules.xml
@@ -0,0 +1,8 @@
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/out/production/lec02-linkedlist/.idea/vcs.xml b/out/production/lec02-linkedlist/.idea/vcs.xml
new file mode 100644
index 0000000000000000000000000000000000000000..35eb1ddfbbc029bcab630581847471d7f238ec53
--- /dev/null
+++ b/out/production/lec02-linkedlist/.idea/vcs.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/out/production/lec02-linkedlist/DoubleLinkedList.class b/out/production/lec02-linkedlist/DoubleLinkedList.class
new file mode 100644
index 0000000000000000000000000000000000000000..9480f0cac8877b7e14a3cf874fbfd9098e797595
Binary files /dev/null and b/out/production/lec02-linkedlist/DoubleLinkedList.class differ
diff --git a/out/production/lec02-linkedlist/DoubleNode.class b/out/production/lec02-linkedlist/DoubleNode.class
new file mode 100644
index 0000000000000000000000000000000000000000..e53ecc26f988ac3278003f6511173696542baf9e
Binary files /dev/null and b/out/production/lec02-linkedlist/DoubleNode.class differ
diff --git a/out/production/lec02-linkedlist/LinkedList.class b/out/production/lec02-linkedlist/LinkedList.class
new file mode 100644
index 0000000000000000000000000000000000000000..ed066c5d5c67489fca0659a7c3162ce8e1e67b94
Binary files /dev/null and b/out/production/lec02-linkedlist/LinkedList.class differ
diff --git a/out/production/lec02-linkedlist/Main.class b/out/production/lec02-linkedlist/Main.class
new file mode 100644
index 0000000000000000000000000000000000000000..98676b61d610ca3bfdedd309d76aec878ff6d7fb
Binary files /dev/null and b/out/production/lec02-linkedlist/Main.class differ
diff --git a/out/production/lec02-linkedlist/Node.class b/out/production/lec02-linkedlist/Node.class
new file mode 100644
index 0000000000000000000000000000000000000000..8bca6e1e69966e6bd08aca9f634246092aa2e5a8
Binary files /dev/null and b/out/production/lec02-linkedlist/Node.class differ
diff --git a/out/production/lec02-linkedlist/README.md b/out/production/lec02-linkedlist/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..dcb6b868f63b2e79f78cd27bcd722adaa8d46ca4
--- /dev/null
+++ b/out/production/lec02-linkedlist/README.md
@@ -0,0 +1,37 @@
+## 链表实验
+
+### 作业要求
+
+1. 完成基础部分是基本任务
+2. 完成进阶部分锻炼自己，做多少是多少
+
+### 截止日期
+
+下周三上课前（11.04）
+
+### 基础
+
+1. 用你擅长的语言实现链表
+2. 在 1 的基础上实现带尾指针的链表：将 1 的代码复制一份，新建一个项目来完成。
+3. 在 2 的基础上实现双向链表:将 1 的代码复制一份，新建一个项目来完成。
+
+### 进阶
+
+1. 单链表反转
+2. 两个有序的链表合并
+3. 删除双向链表倒数第 n 个结点
+4. 求链表的中间结点
+5. LRU 缓存淘汰算法的链表实现(optional)
+
+## 工作流程
+
+1. Fork 本仓库
+2. Clone 代码到本地
+3. 切换到自己学号对应的分支
+4. 完成作业
+5. 提交代码
+6. 新建 Pull Request
+
+## Questions
+
+1. 如何提交？[参考作业提交流程.pdf](./作业提交流程.pdf) 文件
diff --git a/out/production/lec02-linkedlist/lec02-linkedlist.iml b/out/production/lec02-linkedlist/lec02-linkedlist.iml
new file mode 100644
index 0000000000000000000000000000000000000000..b107a2dd81165eaaf682ad3da030668b937fbb6c
--- /dev/null
+++ b/out/production/lec02-linkedlist/lec02-linkedlist.iml
@@ -0,0 +1,11 @@
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git "a/out/production/lec02-linkedlist/\344\275\234\344\270\232\346\217\220\344\272\244\346\265\201\347\250\213.pdf" "b/out/production/lec02-linkedlist/\344\275\234\344\270\232\346\217\220\344\272\244\346\265\201\347\250\213.pdf"
new file mode 100644
index 0000000000000000000000000000000000000000..c9664d640326aca09bc745b129b70a0d3cb3f62e
Binary files /dev/null and "b/out/production/lec02-linkedlist/\344\275\234\344\270\232\346\217\220\344\272\244\346\265\201\347\250\213.pdf" differ
diff --git "a/out/production/lec02-linkedlist/\350\257\276\344\273\266/lecture02-linked-list.pdf" "b/out/production/lec02-linkedlist/\350\257\276\344\273\266/lecture02-linked-list.pdf"
new file mode 100644
index 0000000000000000000000000000000000000000..50b893fb4c97f8c6ee2349886f4c1c8dab62bf68
Binary files /dev/null and "b/out/production/lec02-linkedlist/\350\257\276\344\273\266/lecture02-linked-list.pdf" differ