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程式語言 - LeetCode - C++ - 83. Remove Duplicates from Sorted List

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題目：


解答：

/**
 * Definition for singly-linked list.
 * struct ListNode {
 *     int val;
 *     ListNode *next;
 *     ListNode() : val(0), next(nullptr) {}
 *     ListNode(int x) : val(x), next(nullptr) {}
 *     ListNode(int x, ListNode *next) : val(x), next(next) {}
 * };
 */
class Solution {
public:
    ListNode* deleteDuplicates(ListNode* head) {
        ListNode *cur = head;

        while (cur) {
            if (cur->next && cur->next->val == cur->val) {
                cur->next = cur->next->next;
            }
            else {
                cur = cur->next;
            }
        }

        return head;
    }
};