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20 lines
376 B
C
20 lines
376 B
C
/**
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* Definition for singly-linked list.
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* struct ListNode {
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* int val;
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* struct ListNode *next;
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* };
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*/
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struct ListNode* reverseList(struct ListNode* head){
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struct ListNode *res = NULL;
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while(head) {
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struct ListNode *pre_node = head;
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head = head -> next;
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pre_node -> next = res;
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res = pre_node;
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}
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return res;
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}
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