83. Remove Duplicates from Sorted List

图解分析
当p_current->val==p_next->val

当p_current->val！=p_next->val ：p_current指针向前移动

C实现代码如下：

/**
 * Definition for singly-linked list.
 * struct ListNode {
 *     int val;
 *     struct ListNode *next;
 * };
 */

struct ListNode *deleteDuplicates（struct ListNode *head）{
    if(head==NULL) return head;
    struct ListNode *p_current=head;
    struct ListNode *p_next=head->next;

    While(p_current!=NULL&&p_next!=NULL){

        if(p_current->val==p_next->val)
            p_current->next=p_next->next;
        else
            p_current=p_next;

        p_next=p_next->next;    

    }

    return head;

}

LeetCode实现代码