237. Delete Node in a Linked List

it2022-05-09  33

题目:

Write a function to delete a node (except the tail) in a singly linked list, given only access to that node.

Supposed the linked list is 1 -> 2 -> 3 -> 4 and you are given the third node with value 3, the linked list should become 1 -> 2 -> 4after calling your function.

 

思路:

  题目只给出了要删除的节点,没有给出前指针或根节点,因此只能利用该节点和其之后的节点实现删除操作。

  1.把该节点后一个的节点的值赋给该节点。假如要删除的节点为3,经过赋值操作后为:1->2->4->4

  2.删除该节点后一个节点,原节点为:1->2->4

 

代码:

1 class Solution { 2 public: 3 void deleteNode(ListNode* node) { 4 if (!node || !node->next) { 5 return; 6 } 7 ListNode *nextNode = node->next; 8 node->val = node->next->val; 9 node->next = node->next->next; 10 } 11 };

 

转载于:https://www.cnblogs.com/sindy/p/6805802.html


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