\u62d3\u6251\u5b88\u6052：\u4e0d\u53ef\u4fee\u6539\u94fe\u8868\u7ed3\u6784（\u5982\u53cd\u8f6c\u3001\u7834\u574f\u94fe\u63a5）\u3002<\/p>\n<\/li>\n
\u65f6\u7a7a\u654f\u611f：\u8282\u70b9\u6570\u8fbe\u00a03\u00d71043\u00d7104，\u9700\u89c4\u907f\u00a0O(n2)O(n2)\u00a0\u66b4\u529b\u626b\u63cf\u3002<\/p>\n<\/li>\n<\/ul>\n
\u258d \u7b97\u6cd5\u7b56\u7565：\u53cc\u6307\u9488\u7684\u8def\u5f84\u8c03\u548c<\/p>\n
\u54c8\u5e0c\u8868\u6cd5（\u7a7a\u95f4\u6362\u65f6\u95f4）<\/p>\n
- \n
- \n
\u539f\u7406：\u904d\u5386\u94fe\u8868A，\u8282\u70b9\u5b58\u5165\u54c8\u5e0c\u8868；\u904d\u5386\u94fe\u8868B，\u9996\u4e2a\u5b58\u5728\u4e8e\u54c8\u5e0c\u8868\u7684\u8282\u70b9\u5373\u4e3a\u4ea4\u70b9\u3002<\/p>\n<\/li>\n
- \n
\u590d\u6742\u5ea6：\u65f6\u95f4\u00a0O(m+n)O(m+n)，\u7a7a\u95f4\u00a0O(m)O(m)\u00a0\u6216\u00a0O(n)O(n)\u3002<\/p>\n<\/li>\n
- \n
\u7f3a\u9677：\u7a7a\u95f4\u590d\u6742\u5ea6\u8fdd\u53cd\u672c\u9898\u7406\u60f3\u89e3\u8981\u6c42（\u5c3d\u7ba1\u9898\u76ee\u672a\u660e\u793a，\u4f46\u6700\u4f18\u89e3\u5e94\u8ffd\u6c42\u00a0O(1)O(1)\u00a0\u7a7a\u95f4）\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u53cc\u6307\u9488\u8def\u5f84\u8c03\u548c\u6cd5（\u6700\u4f18\u89e3）<\/p>\n
- \n
- \n
\u6838\u5fc3\u6d1e\u5bdf：\u82e5\u4e24\u94fe\u76f8\u4ea4，\u5934\u8282\u70b9\u5230\u4ea4\u70b9\u7684\u8def\u5f84\u5dee\u53ef\u88ab\u6d88\u9664\u3002<\/p>\n<\/li>\n
- \n
\u64cd\u4f5c\u6d41\u7a0b：<\/p>\n
- \n
- \n
\u6307\u9488\u00a0pA\u00a0\u904d\u5386\u94fe\u8868A，\u6307\u9488\u00a0pB\u00a0\u904d\u5386\u94fe\u8868B\u3002<\/p>\n<\/li>\n
- \n
\u5f53\u00a0pA\u00a0\u8fbe\u5c3e\u8282\u70b9\u65f6，\u8df3\u81f3\u00a0headB\u00a0\u7ee7\u7eed；\u5f53\u00a0pB\u00a0\u8fbe\u5c3e\u8282\u70b9\u65f6，\u8df3\u81f3\u00a0headA\u00a0\u7ee7\u7eed\u3002<\/p>\n<\/li>\n
- \n
\u82e5\u76f8\u4ea4，pA\u00a0\u548c\u00a0pB\u00a0\u5fc5\u5728\u4ea4\u70b9\u76f8\u9047（\u8def\u5f84\u957f\u5ea6\u5747\u4e3a\u00a0m+n\u2212km+n\u2212k，k\u4e3a\u5171\u4eab\u94fe\u957f\u5ea6）；\u82e5\u4e0d\u76f8\u4ea4，\u6700\u7ec8\u540c\u6b65\u6307\u5411\u00a0null\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u590d\u6742\u5ea6：\u65f6\u95f4\u00a0O(m+n)O(m+n)，\u7a7a\u95f4\u00a0O(1)O(1)\u3002<\/p>\n<\/li>\n<\/ul>\n
\u25b6 \u793a\u4f8b\u63a8\u6f14（\u793a\u4f8b1）<\/p>\n
A: 4\u21921\u21928\u21924\u21925
\nB: 5\u21920\u21921\u21928\u21924\u21925 <\/p>\n- \n
- \n
pA\u00a0\u8def\u5f84：4\u21921\u21928 (\u4ea4\u70b9) \u21924\u21925\u2192\u8df3\u81f3B\u5934\u21925\u21920\u21921\u21928 (\u76f8\u9047\u70b9)<\/p>\n<\/li>\n
- \n
pB\u00a0\u8def\u5f84：5\u21920\u21921\u21928 (\u4ea4\u70b9) \u21924\u21925\u2192\u8df3\u81f3A\u5934\u21924\u21921\u21928 (\u76f8\u9047\u70b9)<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
\u9898\u76ee\u7a0b\u5e8f：<\/h4>\n
#include <stdio.h>
\n#include <stdlib.h><\/p>\n\/\/ \u5b9a\u4e49\u94fe\u8868\u8282\u70b9\u7ed3\u6784
\nstruct ListNode {
\n int val; \/\/ \u8282\u70b9\u5b58\u50a8\u7684\u503c
\n struct ListNode *next; \/\/ \u6307\u5411\u4e0b\u4e00\u4e2a\u8282\u70b9\u7684\u6307\u9488
\n};<\/p>\n\/\/ \u67e5\u627e\u4e24\u4e2a\u94fe\u8868\u76f8\u4ea4\u8282\u70b9\u7684\u51fd\u6570
\nstruct ListNode *getIntersectionNode(struct ListNode *headA, struct ListNode *headB) {
\n \/\/ \u521d\u59cb\u5316\u4e24\u4e2a\u6307\u9488，\u5206\u522b\u6307\u5411\u4e24\u4e2a\u94fe\u8868\u7684\u5934\u90e8
\n struct ListNode *pA = headA;
\n struct ListNode *pB = headB;<\/p>\n\/\/ \u5f53\u4e24\u4e2a\u6307\u9488\u4e0d\u76f8\u4ea4\u65f6\u7ee7\u7eed\u904d\u5386
\n while (pA != pB) {
\n \/\/ \u5982\u679cpA\u5230\u8fbe\u94fe\u8868A\u672b\u5c3e，\u5219\u8df3\u8f6c\u5230\u94fe\u8868B\u5934\u90e8
\n pA = (pA == NULL) ? headB : pA->next;
\n \/\/ \u5982\u679cpB\u5230\u8fbe\u94fe\u8868B\u672b\u5c3e，\u5219\u8df3\u8f6c\u5230\u94fe\u8868A\u5934\u90e8
\n pB = (pB == NULL) ? headA : pB->next;
\n }
\n \/\/ \u8fd4\u56de\u76f8\u4ea4\u8282\u70b9（\u82e5\u4e0d\u76f8\u4ea4\u5219\u8fd4\u56deNULL）
\n return pA;
\n}<\/p>\n\/\/ \u521b\u5efa\u65b0\u8282\u70b9\u7684\u8f85\u52a9\u51fd\u6570
\nstruct ListNode *createNode(int val) {
\n \/\/ \u52a8\u6001\u5206\u914d\u5185\u5b58\u521b\u5efa\u65b0\u8282\u70b9
\n struct ListNode *node = (struct ListNode *)malloc(sizeof(struct ListNode));
\n node->val = val; \/\/ \u8bbe\u7f6e\u8282\u70b9\u503c
\n node->next = NULL; \/\/ \u521d\u59cb\u5316next\u6307\u9488\u4e3aNULL
\n return node; \/\/ \u8fd4\u56de\u65b0\u8282\u70b9\u6307\u9488
\n}<\/p>\n\/\/ \u91ca\u653e\u94fe\u8868\u5185\u5b58\u7684\u8f85\u52a9\u51fd\u6570
\nvoid freeList(struct ListNode *head) {
\n \/\/ \u904d\u5386\u94fe\u8868\u91ca\u653e\u6240\u6709\u8282\u70b9\u5185\u5b58
\n while (head != NULL) {
\n struct ListNode *temp = head; \/\/ \u4e34\u65f6\u4fdd\u5b58\u5f53\u524d\u8282\u70b9
\n head = head->next; \/\/ \u79fb\u52a8\u5230\u4e0b\u4e00\u4e2a\u8282\u70b9
\n free(temp); \/\/ \u91ca\u653e\u5f53\u524d\u8282\u70b9\u5185\u5b58
\n }
\n}<\/p>\nint main() {
\n \/\/ ========== \u521b\u5efa\u6d4b\u8bd5\u94fe\u8868 ==========
\n \/\/ \u521b\u5efa\u94fe\u8868A：4 \u2192 1 \u2192 8 \u2192 4 \u2192 5
\n struct ListNode *headA = createNode(4);
\n headA->next = createNode(1);
\n headA->next->next = createNode(8);
\n headA->next->next->next = createNode(4);
\n headA->next->next->next->next = createNode(5);<\/p>\n\/\/ \u521b\u5efa\u94fe\u8868B：5 \u2192 0 \u2192 1
\n struct ListNode *headB = createNode(5);
\n headB->next = createNode(0);
\n headB->next->next = createNode(1);
\n \/\/ \u8ba9\u94fe\u8868B\u7684\u7b2c\u4e09\u4e2a\u8282\u70b9\u6307\u5411\u94fe\u8868A\u7684\u7b2c\u4e09\u4e2a\u8282\u70b9（\u503c\u4e3a8\u7684\u8282\u70b9）
\n headB->next->next->next = headA->next->next;<\/p>\n\/\/ ========== \u67e5\u627e\u76f8\u4ea4\u8282\u70b9 ==========
\n struct ListNode *intersection = getIntersectionNode(headA, headB);<\/p>\n\/\/ ========== \u6253\u5370\u7ed3\u679c ==========
\n if (intersection != NULL) {
\n printf("Intersected at node with value: %d\\\\n", intersection->val);
\n } else {
\n printf("No intersection found\\\\n");
\n }<\/p>\n\/\/ ========== \u6e05\u7406\u5185\u5b58 ==========
\n \/\/ \u6ce8\u610f：\u53ea\u91ca\u653e\u94fe\u8868A\u548cB\u7684\u975e\u5171\u4eab\u90e8\u5206
\n struct ListNode *temp = headB->next->next->next; \/\/ \u4fdd\u5b58\u5171\u4eab\u8282\u70b9\u5730\u5740
\n headB->next->next->next = NULL; \/\/ \u65ad\u5f00\u94fe\u8868B\u4e0e\u5171\u4eab\u90e8\u5206\u7684\u8fde\u63a5
\n freeList(headA); \/\/ \u91ca\u653e\u94fe\u8868A（\u5305\u542b\u5171\u4eab\u90e8\u5206）
\n freeList(headB); \/\/ \u91ca\u653e\u94fe\u8868B（\u4e0d\u5305\u542b\u5171\u4eab\u90e8\u5206）<\/p>\nreturn 0;
\n}<\/p>\n\u8f93\u51fa\u7ed3\u679c：
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814144443-689df65b3c4d8.png\")
<\/h4>\n
\n\u95ee\u9898\u4e8c：\u56de\u6587\u94fe\u8868\u2014\u2014\u65f6\u7a7a\u7ea6\u675f\u4e0b\u7684\u5bf9\u79f0\u5ba1\u5224
\n\u7f16\u5199\u4e00\u4e2a\u51fd\u6570，\u68c0\u67e5\u8f93\u5165\u7684\u94fe\u8868\u662f\u5426\u662f\u56de\u6587\u7684\u3002\u4f46\u5fc5\u987b\u7528 O(n) \u65f6\u95f4\u590d\u6742\u5ea6\u548c O(1) \u7a7a\u95f4\u590d\u6742\u5ea6\u89e3\u51b3\u6b64\u9898<\/h5>\n\u258d \u95ee\u9898\u672c\u8d28\u4e0e\u7ea6\u675f
\n\u9a8c\u8bc1\u5355\u94fe\u8868\u662f\u5426\u4e3a\u56de\u6587\u5e8f\u5217，\u8981\u6c42：<\/p>\n- \n
- \n
\u65f6\u95f4\u590d\u6742\u5ea6\u00a0O(n)O(n)：\u7981\u6b62\u591a\u6b21\u904d\u5386\u3002<\/p>\n<\/li>\n
- \n
\u7a7a\u95f4\u590d\u6742\u5ea6\u00a0O(1)O(1)：\u7981\u7528\u6808\u3001\u6570\u7ec4\u7b49\u989d\u5916\u5b58\u50a8\u3002<\/p>\n<\/li>\n<\/ul>\n
\u258d \u7b97\u6cd5\u7b56\u7565：\u5feb\u6162\u6307\u9488\u4e0e\u5c40\u90e8\u53cd\u8f6c<\/p>\n
- \n
\u5feb\u6162\u6307\u9488\u5b9a\u4f4d\u4e2d\u70b9<\/p>\n
- \n
- \n
\u5feb\u6307\u9488\u00a0fast\u00a0\u6bcf\u6b21\u79fb\u52a8\u4e24\u6b65，\u6162\u6307\u9488\u00a0slow\u00a0\u79fb\u52a8\u4e00\u6b65\u3002<\/p>\n<\/li>\n
- \n
\u5f53\u00a0fast\u00a0\u8fbe\u672b\u5c3e\u65f6，slow\u00a0\u6307\u5411\u94fe\u8868\u4e2d\u70b9（\u5076\u6570\u4e3a\u5de6\u4e2d\u70b9）\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u53cd\u8f6c\u540e\u534a\u94fe\u8868<\/p>\n
- \n
- \n
\u4ece\u4e2d\u70b9\u5f00\u59cb\u53cd\u8f6c\u540e\u534a\u90e8\u5206\u8282\u70b9，\u751f\u6210\u65b0\u94fe\u00a0reversed\u3002<\/p>\n<\/li>\n
- \n
\u5173\u952e\u64cd\u4f5c：\u4fee\u6539\u8282\u70b9\u6307\u9488\u65b9\u5411，\u4e0d\u5360\u7528\u989d\u5916\u7a7a\u95f4\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u53cc\u6307\u9488\u6bd4\u5bf9\u5e8f\u5217<\/p>\n
- \n
- \n
\u6307\u9488\u00a0p1\u00a0\u4ece\u5934\u90e8\u5f00\u59cb，p2\u00a0\u4ece\u00a0reversed\u00a0\u5934\u90e8\u5f00\u59cb\u3002<\/p>\n<\/li>\n
- \n
\u4f9d\u6b21\u6bd4\u5bf9\u00a0p1.val\u00a0\u4e0e\u00a0p2.val，\u82e5\u5168\u90e8\u76f8\u540c\u5219\u4e3a\u56de\u6587\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
- \n
\u6062\u590d\u94fe\u8868\u7ed3\u6784（\u53ef\u9009）<\/p>\n
- \n
- \n
\u518d\u6b21\u53cd\u8f6c\u540e\u534a\u90e8\u5206，\u6062\u590d\u539f\u59cb\u62d3\u6251\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n
\u25b6 \u793a\u4f8b\u63a8\u6f14（\u793a\u4f8b2）<\/p>\n
\u539f\u94fe: 1 \u2192 2 \u2192 2 \u2192 1
\n1. \u5feb\u6162\u6307\u9488：slow \u505c\u4e8e\u7b2c2\u4e2a\u8282\u70b9（\u503c2）
\n2. \u53cd\u8f6c\u540e\u534a：2 \u2192 1 \u53cd\u8f6c\u4e3a 1 \u2192 2
\n3. \u6bd4\u5bf9：
\n – p1: 1 \u2192 2 \u2192 …
\n – p2: 1 \u2192 2 \u2192 …
\n – \u4e24\u4e24\u76f8\u540c，\u786e\u8ba4\u4e3a\u56de\u6587\u3002 <\/p>\n\u9898\u76ee\u7a0b\u5e8f：<\/h4>\n
#include <stdio.h> \/\/ \u5305\u542b\u6807\u51c6\u8f93\u5165\u8f93\u51fa\u5e93
\n#include <stdlib.h> \/\/ \u5305\u542b\u5185\u5b58\u5206\u914d\u7b49\u6807\u51c6\u5e93\u51fd\u6570<\/p>\n\/\/ \u5b9a\u4e49\u94fe\u8868\u8282\u70b9\u7ed3\u6784
\nstruct ListNode {
\n int val; \/\/ \u8282\u70b9\u5b58\u50a8\u7684\u6574\u6570\u503c
\n struct ListNode *next; \/\/ \u6307\u5411\u4e0b\u4e00\u4e2a\u8282\u70b9\u7684\u6307\u9488
\n};<\/p>\n\/\/ \u53cd\u8f6c\u94fe\u8868\u7684\u51fd\u6570
\nstruct ListNode* reverseList(struct ListNode* head) {
\n struct ListNode *prev = NULL; \/\/ \u524d\u9a71\u8282\u70b9\u6307\u9488，\u521d\u59cb\u5316\u4e3aNULL
\n struct ListNode *curr = head; \/\/ \u5f53\u524d\u8282\u70b9\u6307\u9488，\u521d\u59cb\u5316\u4e3a\u94fe\u8868\u5934<\/p>\n\/\/ \u904d\u5386\u94fe\u8868\u8fdb\u884c\u53cd\u8f6c
\n while (curr != NULL) {
\n struct ListNode *nextTemp = curr->next; \/\/ \u4e34\u65f6\u4fdd\u5b58\u4e0b\u4e00\u4e2a\u8282\u70b9
\n curr->next = prev; \/\/ \u5f53\u524d\u8282\u70b9\u6307\u5411\u524d\u9a71\u8282\u70b9（\u53cd\u8f6c\u64cd\u4f5c）
\n prev = curr; \/\/ \u524d\u9a71\u8282\u70b9\u524d\u8fdb\u5230\u5f53\u524d\u8282\u70b9
\n curr = nextTemp; \/\/ \u5f53\u524d\u8282\u70b9\u524d\u8fdb\u5230\u4e0b\u4e00\u4e2a\u8282\u70b9
\n }
\n return prev; \/\/ \u8fd4\u56de\u53cd\u8f6c\u540e\u7684\u65b0\u5934\u8282\u70b9
\n}<\/p>\n\/\/ \u68c0\u67e5\u94fe\u8868\u662f\u5426\u4e3a\u56de\u6587\u7684\u51fd\u6570
\nint isPalindrome(struct ListNode* head) {
\n \/\/ \u5904\u7406\u7a7a\u94fe\u8868\u6216\u5355\u8282\u70b9\u94fe\u8868\u7684\u60c5\u51b5
\n if (head == NULL || head->next == NULL) {
\n return 1; \/\/ \u7a7a\u94fe\u8868\u6216\u5355\u8282\u70b9\u94fe\u8868\u9ed8\u8ba4\u4e3a\u56de\u6587
\n }<\/p>\n\/\/ \u521d\u59cb\u5316\u5feb\u6162\u6307\u9488
\n struct ListNode *slow = head; \/\/ \u6162\u6307\u9488，\u6bcf\u6b21\u79fb\u52a8\u4e00\u6b65
\n struct ListNode *fast = head; \/\/ \u5feb\u6307\u9488，\u6bcf\u6b21\u79fb\u52a8\u4e24\u6b65<\/p>\n\/\/ \u4f7f\u7528\u5feb\u6162\u6307\u9488\u627e\u5230\u94fe\u8868\u4e2d\u70b9
\n while (fast->next != NULL && fast->next->next != NULL) {
\n slow = slow->next; \/\/ \u6162\u6307\u9488\u524d\u8fdb\u4e00\u6b65
\n fast = fast->next->next; \/\/ \u5feb\u6307\u9488\u524d\u8fdb\u4e24\u6b65
\n }<\/p>\n\/\/ \u53cd\u8f6c\u94fe\u8868\u7684\u540e\u534a\u90e8\u5206
\n struct ListNode *secondHalf = reverseList(slow->next); \/\/ \u4ece\u4e2d\u70b9\u540e\u5f00\u59cb\u53cd\u8f6c
\n struct ListNode *firstHalf = head; \/\/ \u524d\u534a\u90e8\u5206\u4ece\u5934\u5f00\u59cb
\n struct ListNode *secondHalfCopy = secondHalf; \/\/ \u4fdd\u5b58\u53cd\u8f6c\u540e\u94fe\u8868\u7684\u5934\u6307\u9488（\u7528\u4e8e\u540e\u7eed\u6062\u590d）<\/p>\nint result = 1; \/\/ \u7ed3\u679c\u6807\u5fd7，\u521d\u59cb\u5047\u8bbe\u662f\u56de\u6587<\/p>\n
\/\/ \u6bd4\u8f83\u524d\u534a\u90e8\u5206\u548c\u53cd\u8f6c\u540e\u7684\u540e\u534a\u90e8\u5206
\n while (secondHalf != NULL) {
\n if (firstHalf->val != secondHalf->val) {
\n result = 0; \/\/ \u53d1\u73b0\u4e0d\u5339\u914d，\u8bbe\u7f6e\u7ed3\u679c\u4e3a\u975e\u56de\u6587
\n break; \/\/ \u63d0\u524d\u7ed3\u675f\u6bd4\u8f83
\n }
\n firstHalf = firstHalf->next; \/\/ \u524d\u534a\u90e8\u5206\u6307\u9488\u524d\u79fb
\n secondHalf = secondHalf->next; \/\/ \u540e\u534a\u90e8\u5206\u6307\u9488\u524d\u79fb
\n }<\/p>\n\/\/ \u6062\u590d\u94fe\u8868\u539f\u59cb\u7ed3\u6784（\u518d\u6b21\u53cd\u8f6c\u540e\u534a\u90e8\u5206）
\n slow->next = reverseList(secondHalfCopy); \/\/ \u5c06\u53cd\u8f6c\u7684\u540e\u534a\u90e8\u5206\u518d\u6b21\u53cd\u8f6c\u6062\u590d<\/p>\nreturn result; \/\/ \u8fd4\u56de\u6700\u7ec8\u7ed3\u679c
\n}<\/p>\n\/\/ \u521b\u5efa\u65b0\u8282\u70b9\u7684\u8f85\u52a9\u51fd\u6570
\nstruct ListNode* createNode(int val) {
\n struct ListNode *node = (struct ListNode*)malloc(sizeof(struct ListNode)); \/\/ \u5206\u914d\u5185\u5b58
\n node->val = val; \/\/ \u8bbe\u7f6e\u8282\u70b9\u503c
\n node->next = NULL; \/\/ \u521d\u59cb\u5316next\u6307\u9488\u4e3aNULL
\n return node; \/\/ \u8fd4\u56de\u65b0\u8282\u70b9\u6307\u9488
\n}<\/p>\n\/\/ \u91ca\u653e\u94fe\u8868\u5185\u5b58\u7684\u8f85\u52a9\u51fd\u6570
\nvoid freeList(struct ListNode* head) {
\n while (head != NULL) {
\n struct ListNode *temp = head; \/\/ \u4e34\u65f6\u4fdd\u5b58\u5f53\u524d\u8282\u70b9
\n head = head->next; \/\/ \u79fb\u52a8\u5230\u4e0b\u4e00\u4e2a\u8282\u70b9
\n free(temp); \/\/ \u91ca\u653e\u5f53\u524d\u8282\u70b9\u5185\u5b58
\n }
\n}<\/p>\n\/\/ \u6253\u5370\u94fe\u8868\u7684\u8f85\u52a9\u51fd\u6570
\nvoid printList(struct ListNode* head) {
\n struct ListNode *current = head; \/\/ \u5f53\u524d\u8282\u70b9\u6307\u9488
\n while (current != NULL) {
\n printf("%d -> ", current->val); \/\/ \u6253\u5370\u8282\u70b9\u503c
\n current = current->next; \/\/ \u79fb\u52a8\u5230\u4e0b\u4e00\u4e2a\u8282\u70b9
\n }
\n printf("NULL\\\\n"); \/\/ \u6253\u5370\u94fe\u8868\u7ed3\u675f\u6807\u8bb0
\n}<\/p>\nint main() {
\n \/\/ ====== \u6d4b\u8bd5\u7528\u4f8b1：\u56de\u6587\u94fe\u8868（\u5947\u6570\u4e2a\u8282\u70b9）1->2->3->2->1 ======
\n struct ListNode *head1 = createNode(1);
\n head1->next = createNode(2);
\n head1->next->next = createNode(3);
\n head1->next->next->next = createNode(2);
\n head1->next->next->next->next = createNode(1);<\/p>\nprintf("\u94fe\u88681: ");
\n printList(head1); \/\/ \u6253\u5370\u94fe\u8868<\/p>\n\/\/ \u68c0\u67e5\u662f\u5426\u4e3a\u56de\u6587\u5e76\u6253\u5370\u7ed3\u679c
\n if (isPalindrome(head1)) {
\n printf("\u94fe\u88681\u662f\u56de\u6587\u94fe\u8868\\\\n");
\n } else {
\n printf("\u94fe\u88681\u4e0d\u662f\u56de\u6587\u94fe\u8868\\\\n");
\n }<\/p>\n\/\/ \u9a8c\u8bc1\u94fe\u8868\u7ed3\u6784\u5df2\u6062\u590d
\n printf("\u6062\u590d\u540e\u7684\u94fe\u88681: ");
\n printList(head1);
\n freeList(head1); \/\/ \u91ca\u653e\u5185\u5b58<\/p>\n\/\/ ====== \u6d4b\u8bd5\u7528\u4f8b2：\u56de\u6587\u94fe\u8868（\u5076\u6570\u4e2a\u8282\u70b9）1->2->2->1 ======
\n struct ListNode *head2 = createNode(1);
\n head2->next = createNode(2);
\n head2->next->next = createNode(2);
\n head2->next->next->next = createNode(1);<\/p>\nprintf("\\\\n\u94fe\u88682: ");
\n printList(head2); \/\/ \u6253\u5370\u94fe\u8868<\/p>\n\/\/ \u68c0\u67e5\u662f\u5426\u4e3a\u56de\u6587\u5e76\u6253\u5370\u7ed3\u679c
\n if (isPalindrome(head2)) {
\n printf("\u94fe\u88682\u662f\u56de\u6587\u94fe\u8868\\\\n");
\n } else {
\n printf("\u94fe\u88682\u4e0d\u662f\u56de\u6587\u94fe\u8868\\\\n");
\n }<\/p>\n\/\/ \u9a8c\u8bc1\u94fe\u8868\u7ed3\u6784\u5df2\u6062\u590d
\n printf("\u6062\u590d\u540e\u7684\u94fe\u88682: ");
\n printList(head2);
\n freeList(head2); \/\/ \u91ca\u653e\u5185\u5b58<\/p>\n\/\/ ====== \u6d4b\u8bd5\u7528\u4f8b3：\u975e\u56de\u6587\u94fe\u8868 1->2->3->4 ======
\n struct ListNode *head3 = createNode(1);
\n head3->next = createNode(2);
\n head3->next->next = createNode(3);
\n head3->next->next->next = createNode(4);<\/p>\nprintf("\\\\n\u94fe\u88683: ");
\n printList(head3); \/\/ \u6253\u5370\u94fe\u8868<\/p>\n\/\/ \u68c0\u67e5\u662f\u5426\u4e3a\u56de\u6587\u5e76\u6253\u5370\u7ed3\u679c
\n if (isPalindrome(head3)) {
\n printf("\u94fe\u88683\u662f\u56de\u6587\u94fe\u8868\\\\n");
\n } else {
\n printf("\u94fe\u88683\u4e0d\u662f\u56de\u6587\u94fe\u8868\\\\n");
\n }<\/p>\n\/\/ \u9a8c\u8bc1\u94fe\u8868\u7ed3\u6784\u5df2\u6062\u590d
\n printf("\u6062\u590d\u540e\u7684\u94fe\u88683: ");
\n printList(head3);
\n freeList(head3); \/\/ \u91ca\u653e\u5185\u5b58<\/p>\n\/\/ ====== \u6d4b\u8bd5\u7528\u4f8b4：\u5355\u4e2a\u8282\u70b9\u94fe\u8868 ======
\n struct ListNode *head4 = createNode(1);<\/p>\nprintf("\\\\n\u94fe\u88684: ");
\n printList(head4); \/\/ \u6253\u5370\u94fe\u8868<\/p>\n\/\/ \u68c0\u67e5\u662f\u5426\u4e3a\u56de\u6587\u5e76\u6253\u5370\u7ed3\u679c
\n if (isPalindrome(head4)) {
\n printf("\u94fe\u88684\u662f\u56de\u6587\u94fe\u8868\\\\n");
\n } else {
\n printf("\u94fe\u88684\u4e0d\u662f\u56de\u6587\u94fe\u8868\\\\n");
\n }
\n freeList(head4); \/\/ \u91ca\u653e\u5185\u5b58<\/p>\nreturn 0; \/\/ \u7a0b\u5e8f\u6b63\u5e38\u7ed3\u675f
\n}<\/p>\n\u8f93\u51fa\u7ed3\u679c：
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250814144444-689df65c4dd58.png\")
<\/h4>\n
\n\u53cc\u96c4\u4e89\u950b：\u7b97\u6cd5\u7b56\u7565\u5bf9\u6bd4\u56fe\u8c31<\/h5>\n
\n
\u7ef4\u5ea6\u94fe\u8868\u76f8\u4ea4（\u53cc\u6307\u9488\u8def\u5f84\u8c03\u548c）\u56de\u6587\u94fe\u8868（\u5feb\u6162\u6307\u9488+\u5c40\u90e8\u53cd\u8f6c）<\/tr>\n \n\n \u6838\u5fc3\u76ee\u6807<\/td>\n \u63a2\u6d4b\u62d3\u6251\u4ea4\u70b9<\/td>\n \u9a8c\u8bc1\u5e8f\u5217\u5bf9\u79f0\u6027<\/td>\n<\/tr>\n \n \u5173\u952e\u7ea6\u675f<\/td>\n \u4fdd\u6301\u539f\u59cb\u7ed3\u6784<\/td>\n O(n)O(n)\u00a0\u65f6\u95f4 +\u00a0O(1)O(1)\u00a0\u7a7a\u95f4<\/td>\n<\/tr>\n \n \u6838\u5fc3\u7b97\u6cd5<\/td>\n \u53cc\u6307\u9488\u8def\u5f84\u957f\u5ea6\u8865\u507f<\/td>\n \u5feb\u6162\u6307\u9488\u5206\u533a + \u5c40\u90e8\u53cd\u8f6c<\/td>\n<\/tr>\n \n \u65f6\u95f4\u590d\u6742\u5ea6<\/td>\n O(m+n)O(m+n)<\/td>\n O(n)O(n)<\/td>\n<\/tr>\n \n \u7a7a\u95f4\u590d\u6742\u5ea6<\/td>\n O(1)O(1)<\/td>\n O(1)O(1)<\/td>\n<\/tr>\n \n \u601d\u7ef4\u7a81\u7834\u70b9<\/td>\n \u6d88\u9664\u8def\u5f84\u5dee\u7684\u827a\u672f<\/td>\n \u65f6\u95f4\u4e0e\u7a7a\u95f4\u7684\u5171\u751f\u4f18\u5316<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n\u603b\u7ed3：\u6307\u9488\u7f8e\u5b66\u7684\u4e8c\u91cd\u594f<\/h5>\n
- \n
- \n
\u94fe\u8868\u76f8\u4ea4\u00a0\u662f\u7a7a\u95f4\u534f\u4f5c\u7684\u54f2\u5b66：\u901a\u8fc7\u8def\u5f84\u957f\u5ea6\u7684\u52a8\u6001\u8c03\u548c，\u53cc\u6307\u9488\u5728\u5185\u5b58\u8ff7\u5bab\u4e2d\u5b9e\u73b0\u7cbe\u51c6\u5b9a\u4f4d，\u63ed\u793a\u4e86\u7b97\u6cd5\u4e2d\u7684\u201c\u76f8\u9047\u662f\u7cbe\u5fc3\u8bbe\u8ba1\u7684\u5fc5\u7136\u201d\u3002<\/p>\n<\/li>\n
- \n
\u56de\u6587\u94fe\u8868\u00a0\u662f\u65f6\u95f4\u4e0e\u5bf9\u79f0\u7684\u5171\u821e：\u5728\u82db\u523b\u7684\u65f6\u7a7a\u7ea6\u675f\u4e0b，\u5feb\u6162\u6307\u9488\u5207\u5272\u65f6\u95f4，\u5c40\u90e8\u53cd\u8f6c\u91cd\u5851\u7a7a\u95f4，\u5c06\u5bf9\u79f0\u9a8c\u8bc1\u8f6c\u5316\u4e3a\u4e00\u573a\u539f\u5730\u64cd\u4f5c\u7684\u82ad\u857e\u3002<\/p>\n<\/li>\n<\/ul>\n
\u94fe\u8868\u7684\u7075\u9b42\u5728\u6307\u9488，\u7b97\u6cd5\u7684\u7cbe\u9ad3\u5728\u6743\u8861\u3002\u5f53\u76f8\u4ea4\u95ee\u9898\u4ee5\u8def\u5f84\u957f\u5ea6\u5f25\u5408\u5dee\u5f02，\u56de\u6587\u95ee\u9898\u4ee5\u5c40\u90e8\u53cd\u8f6c\u91cd\u6784\u5bf9\u79f0\u65f6，\u6211\u4eec\u770b\u5230\u7684\u4e0d\u4ec5\u662f\u89e3\u6cd5\u7684\u5de7\u5999，\u66f4\u662f\u8ba1\u7b97\u673a\u79d1\u5b66\u4e2d\u65f6\u7a7a\u7edf\u4e00\u6027\u7684\u7edd\u7f8e\u4f53\u73b0\u3002<\/p>\n
\n\u535a\u5ba2\u7ed3\u8bed<\/h4>\n
\u4e0b\u4e00\u6b21\u5f53\u4f60\u9762\u5bf9\u7ea0\u7f20\u7684\u94fe\u8868\u65f6，\u8bf7\u8bb0\u4f4f：\u6307\u9488\u4e0d\u4ec5\u662f\u5730\u5740\u7684\u5411\u5bfc，\u66f4\u662f\u65f6\u7a7a\u7684\u8bd7\u4eba\u2014\u2014\u5b83\u4eec\u5728\u5185\u5b58\u7684\u821e\u53f0\u4e0a，\u7528\u76f8\u9047\u8bb2\u8ff0\u534f\u4f5c，\u7528\u53cd\u8f6c\u4e66\u5199\u5bf9\u79f0\u3002\u7b97\u6cd5\u4e4b\u7f8e，\u5c3d\u5728\u8fd9\u52a8\u9759\u4e4b\u95f4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb541\u6b21\uff0c\u70b9\u8d5e7\u6b21\uff0c\u6536\u85cf13\u6b21\u3002\u662f\u3002<\/p>\n","protected":false},"author":2,"featured_media":56713,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[2865,1984,1813,427,2958,2640],"topic":[],"class_list":["post-56715","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-2865","tag-1984","tag-1813","tag-427","tag-2958","tag-2640"],"yoast_head":"\n
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