\u94fe\u8868\u662f\u4e00\u79cd\u901a\u8fc7\u6307\u9488\u4e32\u8054\u5728\u4e00\u8d77\u7684\u7ebf\u6027\u7ed3\u6784，\u6bcf\u4e00\u4e2a\u8282\u70b9\u7531\u4e24\u90e8\u5206\u7ec4\u6210，\u4e00\u4e2a\u662f\u6570\u636e\u57df\u4e00\u4e2a\u662f\u6307\u9488\u57df（\u5b58\u653e\u6307\u5411\u4e0b\u4e00\u4e2a\u8282\u70b9\u7684\u6307\u9488），\u6700\u540e\u4e00\u4e2a\u8282\u70b9\u7684\u6307\u9488\u57df\u6307\u5411null（\u7a7a\u6307\u9488\u7684\u610f\u601d）<\/p>\n
\u5728\u5355\u94fe\u8868\u7684\u6838\u5fc3\u64cd\u4f5c\u4e2d，\u589e\u5220\u8282\u70b9\u662f\u6700\u5e38\u7528\u7684\u573a\u666f，\u800c\u67e5\u627e\u8282\u70b9\u7684\u6548\u7387\u8f83\u4f4e \u2014\u2014 \u56e0\u4e3a\u5355\u94fe\u8868\u53ea\u80fd\u4ece\u5934\u8282\u70b9\u5f00\u59cb\u9010\u4e2a\u904d\u5386，\u65e0\u6cd5\u76f4\u63a5\u5b9a\u4f4d\u76ee\u6807\u8282\u70b9\u3002\u65e0\u8bba\u662f\u589e\u52a0\u8fd8\u662f\u5220\u9664\u8282\u70b9，\u9700\u8981\u627e\u5230\u524d\u9a71\u8282\u70b9，，\u518d\u4fee\u6539\u8be5\u524d\u9a71\u8282\u70b9\u7684next\u6307\u9488\u6307\u5411\u3002\u4e3a\u4e86\u7b80\u5316\u64cd\u4f5c，\u901a\u5e38\u4f1a\u521b\u5efa\u4e00\u4e2a\u865a\u62df\u5934\u8282\u70b9（\u54d1\u8282\u70b9）：\u4e00\u65b9\u9762\u80fd\u5c06 \u5904\u7406\u9996\u8282\u70b9\u201d\u548c \u5904\u7406\u5176\u4ed6\u8282\u70b9\u7684\u903b\u8f91\u7edf\u4e00（\u907f\u514d\u9996\u8282\u70b9\u65e0\u524d\u9a71\u8282\u70b9\u7684\u7279\u6b8a\u5224\u65ad），\u53e6\u4e00\u65b9\u9762\u4e5f\u80fd\u66f4\u4fbf\u6377\u5730\u8fd4\u56de\u64cd\u4f5c\u540e\u7684\u65b0\u94fe\u8868\u5934\u8282\u70b9\u3002<\/p>\n
\u5b8c\u6574\u4ee3\u7801\u5982\u4e0b：<\/p>\n
class Solution {
\npublic:
\nListNode* removeElements(ListNode* head, int val)
\n{
\nListNode* dummyHead = new ListNode(0);\/\/\u8bbe\u7f6e\u4e00\u4e2a\u865a\u62df\u5934\u7ed3\u70b9
\ndummyHead->next = head;\/\/\u5c06\u865a\u62df\u5934\u7ed3\u70b9\u6307\u5411head,\u8fd9\u6837\u65b9\u4fbf\u540e\u9762\u505a\u5220\u9664\u64cd\u4f5c
\nListNode* cur = dummyHead;
\nwhile (cur->next != NULL)
\n{
\nif (cur->next->val == val)
\n{
\nListNode* tmp = cur->next;\/\/\u5f85\u5220\u9664\u8282\u70b9\u7684\u5730\u5740\u4fdd\u5b58\u5230tmp\u53d8\u91cf\u91cc，\u7b49\u5b8c\u6210\u94fe\u8868\u6307\u9488\u7684\u4fee\u6539\u540e\u91ca\u653e\u5185\u5b58
\ncur->next = cur->next->next;
\ndelete tmp;
\n}
\nelse
\n{
\ncur = cur->next;
\n}
\n}
\nhead = dummyHead->next;
\ndelete dummyHead;
\nreturn head;
\n}
\n}; <\/p>\n
- \n
- \u65f6\u95f4\u590d\u6742\u5ea6: O(n)<\/li>\n
- \u7a7a\u95f4\u590d\u6742\u5ea6: O(1)<\/li>\n<\/ul>\n
\u4e8c\u3001\u8bbe\u8ba1\u94fe\u8868<\/p>\n
\u9898\u76ee\u94fe\u63a5\/\u6587\u7ae0\u8bb2\u89e3\/\u89c6\u9891\u8bb2\u89e3：<\/p>\n
https:\/\/programmercarl.com\/0707.%E8%AE%BE%E8%AE%A1%E9%93%BE%E8%A1%A8.html<\/p>\n
\u9898\u610f：<\/p>\n
\u5728\u94fe\u8868\u7c7b\u4e2d\u5b9e\u73b0\u8fd9\u4e9b\u529f\u80fd：<\/p>\n
- \n
- get(index)：\u83b7\u53d6\u94fe\u8868\u4e2d\u7b2c\u00a0index\u00a0\u4e2a\u8282\u70b9\u7684\u503c\u3002\u5982\u679c\u7d22\u5f15\u65e0\u6548，\u5219\u8fd4\u56de-1\u3002<\/li>\n
- addAtHead(val)：\u5728\u94fe\u8868\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u4e4b\u524d\u6dfb\u52a0\u4e00\u4e2a\u503c\u4e3a\u00a0val\u00a0\u7684\u8282\u70b9\u3002\u63d2\u5165\u540e，\u65b0\u8282\u70b9\u5c06\u6210\u4e3a\u94fe\u8868\u7684\u7b2c\u4e00\u4e2a\u8282\u70b9\u3002<\/li>\n
- addAtTail(val)：\u5c06\u503c\u4e3a\u00a0val \u7684\u8282\u70b9\u8ffd\u52a0\u5230\u94fe\u8868\u7684\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u3002<\/li>\n
- addAtIndex(index,val)：\u5728\u94fe\u8868\u4e2d\u7684\u7b2c\u00a0index\u00a0\u4e2a\u8282\u70b9\u4e4b\u524d\u6dfb\u52a0\u503c\u4e3a\u00a0val\u00a0 \u7684\u8282\u70b9\u3002\u5982\u679c\u00a0index\u00a0\u7b49\u4e8e\u94fe\u8868\u7684\u957f\u5ea6，\u5219\u8be5\u8282\u70b9\u5c06\u9644\u52a0\u5230\u94fe\u8868\u7684\u672b\u5c3e\u3002\u5982\u679c index \u5927\u4e8e\u94fe\u8868\u957f\u5ea6，\u5219\u4e0d\u4f1a\u63d2\u5165\u8282\u70b9\u3002\u5982\u679cindex\u5c0f\u4e8e0，\u5219\u5728\u5934\u90e8\u63d2\u5165\u8282\u70b9\u3002<\/li>\n
- deleteAtIndex(index)：\u5982\u679c\u7d22\u5f15\u00a0index \u6709\u6548，\u5219\u5220\u9664\u94fe\u8868\u4e2d\u7684\u7b2c\u00a0index \u4e2a\u8282\u70b9\u3002<\/li>\n<\/ul>\n
\u9898\u76ee\u4e2d\u7684index\u6307\u7684\u662f\u4ece0\u5f00\u59cb\u3002<\/p>\n
\u91c7\u7528\u8bbe\u7f6e\u865a\u62df\u5934\u7ed3\u70b9\u8fdb\u884c\u64cd\u4f5c，\u4ee3\u7801\u5982\u4e0b：<\/p>\n
class MyLinkedList {
\npublic:
\n\/\/\u5b9a\u4e49\u94fe\u8868\u8282\u70b9\u7ed3\u6784\u4f53
\nstruct LinkedNode {
\nint val;
\nLinkedNode* next;
\nLinkedNode(int val):val(val),next(nullptr){}
\n};<\/p>\n\/\/\u521d\u59cb\u5316\u94fe\u8868
\nMyLinkedList() {
\n_dummyHead = new LinkedNode(0);\/\/\u8fd9\u91cc\u5b9a\u4e49\u7684\u5934\u7ed3\u70b9，\u662f\u4e00\u4e2a\u865a\u62df\u5934\u8282\u70b9,\u800c\u4e0d\u662f\u771f\u6b63\u7684\u94fe\u8868\u5934\u7ed3\u70b9
\n_size = 0;
\n}<\/p>\n\/\/\u83b7\u53d6\u5230\u7b2cindex\u4e2a\u8282\u70b9\u6570\u503c，\u5982\u679cindex\u662f\u975e\u6cd5\u6570\u503c\u76f4\u63a5\u8fd4\u56de-1，\u6ce8\u610findex\u662f\u4ece0\u5f00\u59cb\u7684，\u7b2c0\u4e2a\u8282\u70b9\u5c31\u662f\u5934\u7ed3\u70b9
\nint get(int index) {
\nif (index > (_size – 1) || index< 0) {
\nreturn -1;
\n}
\nLinkedNode* cur = _dummyHead->next;
\nwhile (index–) {\/\/\u5982\u679c–index\u5c31\u4f1a\u9677\u5165\u6b7b\u5faa\u73af
\ncur = cur->next;
\n}
\nreturn cur->val;
\n}<\/p>\n\/\/\u5728\u94fe\u8868\u6700\u524d\u9762\u63d2\u5165\u4e00\u4e2a\u8282\u70b9，\u63d2\u5165\u5b8c\u6210\u540e，\u65b0\u63d2\u5165\u7684\u8282\u70b9\u4e3a\u94fe\u8868\u7684\u65b0\u7684\u5934\u8282\u70b9
\nvoid addAtHead(int val) {
\nLinkedNode* newNode = new LinkedNode(val);
\nnewNode->next = _dummyHead->next;
\n_dummyHead->next = newNode;
\n_size++;
\n}<\/p>\n\/\/\u5728\u94fe\u8868\u6700\u540e\u9762\u6dfb\u52a0\u4e00\u4e2a\u8282\u70b9
\nvoid addAtTail(int val) {
\nLinkedNode* newNode = new LinkedNode(val);
\nLinkedNode* cur = _dummyHead;
\nwhile (cur->next != nullptr) {
\ncur = cur->next;
\n}
\ncur->next = newNode;
\n_size++;
\n}<\/p>\n\/\/\u5728\u7b2cindex\u4e2a\u8282\u70b9\u4e4b\u524d\u63d2\u5165\u4e00\u4e2a\u65b0\u8282\u70b9，\u4f8b\u5982index\u4e3a0，\u90a3\u4e48\u65b0\u63d2\u5165\u7684\u8282\u70b9\u4e3a\u94fe\u8868\u7684\u65b0\u8282\u70b9
\n\/\/\u5982\u679cindex\u7b49\u4e8e\u94fe\u8868\u7684\u957f\u5ea6\u5219\u8bf4\u660e\u662f\u65b0\u63d2\u5165\u7684\u8282\u70b9\u4e3a\u94fe\u8868\u7684\u5c3e\u8282\u70b9
\n\/\/\u5982\u679cindex\u5927\u4e8e\u94fe\u8868\u7684\u957f\u5ea6，\u5219\u8fd4\u56de\u7a7a
\n\/\/\u5982\u679cindex\u5c0f\u4e8e0,\u5219\u5728\u5934\u90e8\u63d2\u5165\u8282\u70b9
\nvoid addAtIndex(int index, int val) {
\nif (index > _size) return;
\nif (index < 0) index = 0;
\nLinkedNode* newNode = new LinkedNode(val);
\nLinkedNode* cur = _dummyHead;
\nwhile (index–) {
\ncur = cur->next;
\n}
\nnewNode->next = cur->next;
\ncur->next = newNode;
\n_size++;
\n}<\/p>\n\/\/\u5220\u9664\u7b2cindex\u4e2a\u8282\u70b9，\u5982\u679cindex\u5927\u4e8e\u7b49\u4e8e\u94fe\u8868\u7684\u957f\u5ea6，\u76f4\u63a5return,\u6ce8\u610findex\u662f\u4ece0\u5f00\u59cb\u7684
\nvoid deleteAtIndex(int index) {
\nif (index >= _size || index < 0) {
\nreturn;
\n}
\nLinkedNode* cur = _dummyHead;
\nwhile (index–) {
\ncur = cur->next;
\n}
\nLinkedNode* tmp = cur->next;
\ncur->next = cur->next->next;
\ndelete tmp;
\n\/\/delete\u547d\u4ee4\u6307\u793a\u91ca\u653e\u4e86tmp\u6307\u9488\u539f\u672c\u6240\u6307\u7684\u90a3\u90e8\u5206\u5185\u5b58，
\n\/\/\u88abdelete\u540e\u7684\u6307\u9488tmp\u7684\u503c（\u5730\u5740）\u5e76\u975e\u5c31\u662fNULL\u800c\u662f\u968f\u673a\u503c\u4e5f\u5c31\u662f\u88abdelete\u540e
\n\/\/\u5982\u679c\u4e0d\u518d\u52a0\u4e0a\u4e00\u53e5tmp=nullptr,tmp\u4f1a\u6210\u4e3a\u4e71\u6307\u7684\u91ce\u6307\u9488
\n\/\/\u5982\u679c\u4e4b\u540e\u7684\u7a0b\u5e8f\u4e0d\u5c0f\u5fc3\u4f7f\u7528\u4e86tmp，\u4f1a\u6307\u5411\u96be\u4ee5\u9884\u60f3\u7684\u5185\u5b58\u7a7a\u95f4
\ntmp = nullptr;
\n_size–;
\n}<\/p>\n\/\/\u6253\u5370\u94fe\u8868
\nvoid printLinkedList() {
\nLinkedNode* cur = _dummyHead;
\nwhile (cur->next != nullptr) {
\ncout << cur->next->val << " ";
\ncur = cur->next;
\n}
\ncout << endl;
\n}<\/p>\nprivate:
\nint _size;
\nLinkedNode* _dummyHead;<\/p>\n}; <\/p>\n
\u4e09\u3001\u53cd\u8f6c\u94fe\u8868<\/p>\n
\u9898\u76ee\u94fe\u63a5\/\u6587\u7ae0\u8bb2\u89e3\/\u89c6\u9891\u8bb2\u89e3：<\/span>https:\/\/programmercarl.com\/0206.%E7%BF%BB%E8%BD%AC%E9%93%BE%E8%A1%A8.html<\/p>\n
\u901a\u8fc7\u6539\u53d8\u94fe\u8868\u7684next\u6307\u9488\u7684\u6307\u5411，\u76f4\u63a5\u5c06\u94fe\u8868\u53cd\u8f6c ，\u800c\u4e0d\u7528\u91cd\u65b0\u5b9a\u4e49\u4e00\u4e2a\u65b0\u7684\u94fe\u8868，\u5982\u56fe：<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260210071723-698adb838be20.png\")
<\/p>\n\u53cc\u6307\u9488\u6cd5：<\/p>\n
class Solution
\n{
\npublic:
\nListNode* reverseList(ListNode* head) {
\nListNode* temp;\/\/\u4fdd\u5b58cur\u7684\u4e0b\u4e00\u4e2a\u8282\u70b9
\nListNode* cur = head;
\nListNode* pre = NULL;
\nwhile (cur) {
\ntemp = cur->next;\/\/\u4fdd\u5b58\u4e00\u4e0bcur\u7684\u4e0b\u4e00\u4e2a\u8282\u70b9，\u56e0\u4e3a\u63a5\u4e0b\u6765\u8981\u6539\u53d8cur->next
\ncur->next = pre;\/\/\u7ffb\u8f6c\u64cd\u4f5c
\n\/\/\u66f4\u65b0pre\u548ccur\u6307\u9488
\npre = cur;
\ncur = temp;
\n}
\nreturn pre;
\n}
\n}; <\/p>\n- \n
- \u65f6\u95f4\u590d\u6742\u5ea6: O(n)<\/li>\n
- \u7a7a\u95f4\u590d\u6742\u5ea6: O(1)<\/li>\n<\/ul>\n
\u9012\u5f52\u6cd5：<\/h4>\n
class Solution {
\npublic:
\nListNode* reverse(ListNode* pre, ListNode* cur) {
\nif (cur == NULL) return pre;
\nListNode* temp = cur->next;
\ncur->next = pre;
\n\/\/\u53ef\u4ee5\u548c\u53cc\u6307\u9488\u7684\u4ee3\u7801\u8fdb\u884c\u5bf9\u6bd4
\n\/\/\u53cc\u6307\u9488：
\n\/\/pre = cur;
\n\/\/cur = temp;
\n\/\/\u9012\u5f52：
\nreturn reverse(cur, temp);
\n}
\nListNode* reverseList(ListNode* head) {
\n\/\/\u548c\u53cc\u6307\u9488\u521d\u59cb\u5316\u662f\u4e00\u6837\u7684\u903b\u8f91
\n\/\/ListNode* cur=head;
\n\/\/ListNode* pre=NULL;
\nreturn reverse(NULL, head);
\n}
\n}; <\/p>\n- \n
- \u65f6\u95f4\u590d\u6742\u5ea6: O(n), \u8981\u9012\u5f52\u5904\u7406\u94fe\u8868\u7684\u6bcf\u4e2a\u8282\u70b9<\/li>\n
- \u7a7a\u95f4\u590d\u6742\u5ea6: O(n), \u9012\u5f52\u8c03\u7528\u4e86 n \u5c42\u6808\u7a7a\u95f4<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
\u4e00\u3001\u79fb\u9664\u94fe\u8868\u5143\u7d20 \u9898\u76ee\u94fe\u63a5\/\u6587\u7ae0\u8bb2\u89e3\/\u89c6\u9891\u8bb2\u89e3：：https:\/\/programmercarl.com\/0203.%E7%A7%BB%E9%99%A4%E9%93%BE%E8%A1%A8%E5%85%83%E7%B4%A0.html \u94fe\u8868\u662f\u4e00\u79cd\u901a\u8fc7\u6307\u9488\u4e32\u8054\u5728\u4e00\u8d77\u7684\u7ebf\u6027\u7ed3\u6784，\u6bcf\u4e00\u4e2a\u8282\u70b9\u7531\u4e24\u90e8\u5206\u7ec4\u6210，\u4e00\u4e2a\u662f\u6570\u636e\u57df\u4e00\u4e2a\u662f\u6307\u9488\u57df（\u5b58\u653e\u6307\u5411\u4e0b\u4e00\u4e2a\u8282\u70b9\u7684\u6307\u9488），\u6700\u540e\u4e00\u4e2a\u8282\u70b9\u7684\u6307\u9488\u57df\u6307\u5411nul<\/p>\n","protected":false},"author":2,"featured_media":74755,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[1813,2640],"topic":[],"class_list":["post-74756","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-1813","tag-2640"],"yoast_head":"\n
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