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RemoveDuplicatesFromSortedList.java
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RemoveDuplicatesFromSortedList.java
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import common.ListNode;
/*
* https://leetcode.com/problems/remove-duplicates-from-sorted-list/
*/
public class RemoveDuplicatesFromSortedList {
public ListNode deleteDuplicates(ListNode head) {
if (head == null) {
return head;
}
if (head.next == null) {
return head;
}
if (head.next.val == head.val) {
head.next = head.next.next;
return deleteDuplicates(head);
}
head.next = deleteDuplicates(head.next);
return head;
}
public static void main(String[] args) {
System.out.println(new RemoveDuplicatesFromSortedList().deleteDuplicates(
new ListNode(
1,
new ListNode(
1,
new ListNode(
2,
new ListNode(
3,
new ListNode(3)
)
)
)
)
));
}
}