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83-remove-duplicates-from-sorted-list/83-remove-duplicates-from-sorted-list.java

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+/**
+ * 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) {
+        ListNode current = head;
+        while (current != null) {
+            ListNode next = current.next;
+
+            while (next != null && current.val == next.val) {
+                next = next.next;
+            }
+
+            current.next = next;
+            current = next;
+        }
+        return head;
+    }
+}