problem
Remove Duplicates from Sorted List
The basic usage of linked list is investigated.
code
/**
* Definition for singly-linked list.
* struct ListNode {
* int val;
* ListNode *next;
* ListNode(int x): val(x), next(NULL) {}
* };
*/
class Solution {
public:
ListNode* deleteDuplicates(ListNode* head) {
ListNode* cur = head;
while(cur && cur->next)//null is error.
{
if(cur->val == cur->next->val) cur->next = cur->next- >next;
else cur = cur->next; //
}
return head;
}
};
Reference
1. Remove Duplicates from Sorted List ;
End
/**
* Definition for singly-linked list.
* struct ListNode {
* int val;
* ListNode *next;
* ListNode(int x): val(x), next(NULL) {}
* };
*/
class Solution {
public:
ListNode* deleteDuplicates(ListNode* head) {
ListNode* cur = head;
while(cur && cur->next)//null is error.
{
if(cur->val == cur->next->val) cur->next = cur->next- >next;
else cur = cur->next; //
}
return head;
}
};