c语言-leetcode题解之0083-remove-duplicates-from-sorted-list.zip

#include <limits.h> #include <stdio.h> #include <stdlib.h> struct ListNode { int val; struct ListNode *next; }; struct ListNode* deleteDuplicates(struct ListNode* head) { struct ListNode dummy; struct ListNode *prev = &dummy; dummy.val = INT_MIN; while (head != NULL) { if (prev->val != head->val) { prev->next = head; prev = head; } head = head->next; } prev->next = head; return dummy.next; } int main(int argc, char **argv) { int i; struct ListNode *head = NULL; struct ListNode *prev = NULL; struct ListNode *p; for (i = 0; i < argc - 1; i++) { p = malloc(sizeof(*p)); p->val = atoi(argv[i + 1]); p->next = NULL; if (head == NULL) { head = p; prev = head; } else { prev->next = p; prev = p; } } p = deleteDuplicates(head); while (p != NULL) { printf("%d ", p->val); p = p->next; } printf("\n"); return 0; }