diff --git a/src/main/java/com/dota/link/_82/Solution.java b/src/main/java/com/dota/link/_82/Solution.java
new file mode 100644
index 0000000..49bda3a
--- /dev/null
+++ b/src/main/java/com/dota/link/_82/Solution.java
@@ -0,0 +1,33 @@
+package com.dota.link._82;
+
+import com.dota.ListNode;
+
+/**
+ * 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)
+			return null;
+		var t = new ListNode(0, head);
+		var p = t;
+		while (p.next != null && p.next.next != null) {
+			if (p.next.val == p.next.next.val) {
+				var v = p.next.val;
+				while (p.next != null && p.next.val == v) {
+					p.next = p.next.next;
+				}
+			} else {
+				p = p.next;
+			}
+		}
+		return t.next;
+	}
+}
\ No newline at end of file
diff --git a/src/main/java/com/dota/link/_83/Solution.java b/src/main/java/com/dota/link/_83/Solution.java
new file mode 100644
index 0000000..3e1dd9b
--- /dev/null
+++ b/src/main/java/com/dota/link/_83/Solution.java
@@ -0,0 +1,23 @@
+package com.dota.link._83;
+
+
+import com.dota.ListNode;
+
+/**
+ * 83. 删除排序链表中的重复元素
+ */
+class Solution {
+	public ListNode deleteDuplicates(ListNode head) {
+		if (head == null) return null;
+		var p = head;
+		while (p.next != null) {
+			if (p.val == p.next.val) {
+				p.next = p.next.next;
+			} else {
+				p = p.next;
+			}
+
+		}
+		return head;
+	}
+}