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RemoveList.java
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RemoveList.java
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package leetcode;
public class RemoveList {
static class ListNode {
int val;
ListNode next;
ListNode(int x) {
val = x;
next = null;
}
}
public static ListNode deleteDuplicates(ListNode head) {
if(head == null) return head;
if(head.next == null) return head;
ListNode search = head;
while(search != null){
if(search.next == null) return head;
else{
if(search.val == search.next.val){
if(search.next.next == null) search.next = null;
else search.next = search.next.next;
}
else
search = search.next;
}
}
return head;
}
public static void main(String[] args){
ListNode node1 = new ListNode(1);
ListNode node2 = new ListNode(1);
ListNode node3 = new ListNode(1);
ListNode node4 = new ListNode(4);
node1.next = node2;
node2.next = node3;
node3.next = node4;
deleteDuplicates(node1);
System.out.println(node4.next.val);
}
}