diff --git a/src/main/java/leetcode/editor/cn/RemoveDuplicatesFromSortedListIi.java b/src/main/java/leetcode/editor/cn/RemoveDuplicatesFromSortedListIi.java
new file mode 100644
index 0000000..69bcd61
--- /dev/null
+++ b/src/main/java/leetcode/editor/cn/RemoveDuplicatesFromSortedListIi.java
@@ -0,0 +1,87 @@
+//存在一个按升序排列的链表，给你这个链表的头节点 head ，请你删除链表中所有存在数字重复情况的节点，只保留原始链表中 没有重复出现 的数字。
+//
+// 返回同样按升序排列的结果链表。
+//
+//
+//
+// 示例 1：
+//
+//
+//输入：head = [1,2,3,3,4,4,5]
+//输出：[1,2,5]
+//
+//
+// 示例 2：
+//
+//
+//输入：head = [1,1,1,2,3]
+//输出：[2,3]
+//
+//
+//
+//
+// 提示：
+//
+//
+// 链表中节点数目在范围 [0, 300] 内
+// -100 <= Node.val <= 100
+// 题目数据保证链表已经按升序排列
+//
+// Related Topics 链表
+// 👍 628 👎 0
+
+package leetcode.editor.cn;
+
+import com.code.leet.entiy.ListNode;
+
+//82:删除排序链表中的重复元素 II
+public class RemoveDuplicatesFromSortedListIi{
+ public static void main(String[] args) {
+ //测试代码
+ Solution solution = new RemoveDuplicatesFromSortedListIi().new Solution();
+ }
+ //力扣代码
+ //leetcode submit region begin(Prohibit modification and deletion)
+/**
+ * Definition for singly-linked list.
+ * public class ListNode {
+ * int val;
+ * ListNode next;
+ * ListNode() {}
+ * ListNode(int val) { this.val = val; }
+ * ListNode(int val, ListNode next) { this.val = val; this.next = next; }
+ * }
+ */
+class Solution {
+ public ListNode deleteDuplicates(ListNode head) {
+ if (head == null || head.next == null) {
+ return head;
+ }
+ ListNode front = new ListNode(-1);
+ ListNode temp = front;
+ int same = head.val;
+ boolean flag = false;
+ while (head.next != null) {
+ if (head.val == head.next.val) {
+ head.next = head.next.next;
+ same = head.val;
+ flag = true;
+ } else if (flag && head.val == same) {
+ head = head.next;
+ } else {
+ temp.next = head;
+ temp = temp.next;
+ head = head.next;
+ }
+ }
+ if (head.val == same) {
+ temp.next = null;
+ } else {
+ temp.next = head;
+ }
+ return front.next;
+ }
+}
+//leetcode submit region end(Prohibit modification and deletion)
+
+}
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diff --git a/src/main/java/leetcode/editor/cn/RemoveDuplicatesFromSortedListIi.md b/src/main/java/leetcode/editor/cn/RemoveDuplicatesFromSortedListIi.md
new file mode 100644
index 0000000..193f139
--- /dev/null
+++ b/src/main/java/leetcode/editor/cn/RemoveDuplicatesFromSortedListIi.md
@@ -0,0 +1,30 @@
+存在一个按升序排列的链表，给你这个链表的头节点 head ，请你删除链表中所有存在数字重复情况的节点，只保留原始链表中 没有重复出现 的数字。
+
+返回同样按升序排列的结果链表。
+
+
+
+示例 1：
+
+
+输入：head = [1,2,3,3,4,4,5]
+输出：[1,2,5]
+
+
+示例 2：
+
+
+输入：head = [1,1,1,2,3]
+输出：[2,3]
+
+
+
+
+提示：
+
+
+ - 链表中节点数目在范围
[0, 300] 内
+ -100 <= Node.val <= 100- 题目数据保证链表已经按升序排列
+
+\n👍 628👎 0
\ No newline at end of file