{"id":49,"date":"2025-06-14T10:20:54","date_gmt":"2025-06-14T02:20:54","guid":{"rendered":"http:\/\/116.62.30.57\/?p=49"},"modified":"2025-06-16T13:39:31","modified_gmt":"2025-06-16T05:39:31","slug":"%e6%af%8f%e6%97%a5%e4%b8%80%e9%a2%98-%e4%bb%8e%e9%93%be%e8%a1%a8%e7%a7%bb%e9%99%a4%e6%95%b0%e7%bb%84%e4%b8%ad%e7%9a%84%e8%8a%82%e7%82%b9","status":"publish","type":"post","link":"https:\/\/qiuqiqaq.fun\/index.php\/2025\/06\/14\/%e6%af%8f%e6%97%a5%e4%b8%80%e9%a2%98-%e4%bb%8e%e9%93%be%e8%a1%a8%e7%a7%bb%e9%99%a4%e6%95%b0%e7%bb%84%e4%b8%ad%e7%9a%84%e8%8a%82%e7%82%b9\/","title":{"rendered":"\u6bcf\u65e5\u4e00\u9898\u2014\u2014\u4ece\u94fe\u8868\u79fb\u9664\u6570\u7ec4\u4e2d\u7684\u8282\u70b9"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u9898\u76ee\u8be6\u60c5<\/h2>\n\n\n\n<p>\u7ed9\u4f60\u4e00\u4e2a\u6574\u6570\u6570\u7ec4\u00a0<code>nums<\/code>\u00a0\u548c\u4e00\u4e2a\u94fe\u8868\u7684\u5934\u8282\u70b9\u00a0<code>head<\/code>\u3002\u4ece\u94fe\u8868\u4e2d<strong>\u79fb\u9664<\/strong>\u6240\u6709\u5b58\u5728\u4e8e\u00a0<code>nums<\/code>\u00a0\u4e2d\u7684\u8282\u70b9\u540e\uff0c\u8fd4\u56de\u4fee\u6539\u540e\u7684\u94fe\u8868\u7684\u5934\u8282\u70b9\u3002<\/p>\n\n\n<p>\u793a\u4f8b 1\uff1a<br \/>\n\u8f93\u5165\uff1a\u00a0nums = [1,2,3], head = [1,2,3,4,5]<br \/>\n\u8f93\u51fa\uff1a\u00a0[4,5]<\/p>\n\n\n<p>\u793a\u4f8b 2\uff1a<\/p>\n<p>\u8f93\u5165\uff1a\u00a0nums = [1], head = [1,2,1,2,1,2]<\/p>\n<p>\u8f93\u51fa\uff1a\u00a0[2,2,2]<\/p>\n\n\n<p>\u793a\u4f8b 3\uff1a<br \/>\n\u8f93\u5165\uff1a\u00a0nums = [5], head = [1,2,3,4]<br \/>\n\u8f93\u51fa\uff1a\u00a0[1,2,3,4]<\/p>\n\n\n\n<p><strong>\u63d0\u793a\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>1 &lt;= nums.length &lt;= 10<sup>5<\/sup><\/code><\/li>\n\n\n\n<li><code>1 &lt;= nums[i] &lt;= 10<sup>5<\/sup><\/code><\/li>\n\n\n\n<li><code>nums<\/code>&nbsp;\u4e2d\u7684\u6240\u6709\u5143\u7d20\u90fd\u662f\u552f\u4e00\u7684\u3002<\/li>\n\n\n\n<li>\u94fe\u8868\u4e2d\u7684\u8282\u70b9\u6570\u5728&nbsp;<code>[1, 10<sup>5<\/sup>]<\/code>&nbsp;\u7684\u8303\u56f4\u5185\u3002<\/li>\n\n\n\n<li><code>1 &lt;= Node.val &lt;= 10<sup>5<\/sup><\/code><\/li>\n\n\n\n<li>\u8f93\u5165\u4fdd\u8bc1\u94fe\u8868\u4e2d\u81f3\u5c11\u6709\u4e00\u4e2a\u503c\u6ca1\u6709\u5728&nbsp;<code>nums<\/code>&nbsp;\u4e2d\u51fa\u73b0\u8fc7<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u89e3\u6cd5\u4e00\uff1a\u66b4\u529b\u67e5\u627e\u6cd5<\/h2>\n\n\n\n<p>\u770b\u5230\u9898\u76ee\u7684\u7b2c\u4e00\u53cd\u5e94\u662f\uff0c\u66b4\u529b\u7834\u89e3\uff0c\u7528\u53cc\u6307\u9488\u626b\u63cf\u94fe\u8868\uff0c\u5c06\u626b\u63cf\u5230\u7684\u94fe\u8868\u7684\u503c\u4e0e\u6570\u7ec4\u4e2d\u7684\u503c\u4e00\u4e00\u6bd4\u8f83\uff0c\u5b58\u5728\u76f8\u540c\u503c\u5219\u5220\u9664\u8be5\u8282\u70b9\uff0c\u5e76\u5c06\u6307\u9488\u540e\u79fb\u3002\u5177\u4f53\u4ee3\u7801\u5b9e\u73b0\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>C:\n\/**\n\u00a0* Definition for singly-linked list.\n\u00a0* struct ListNode {\n\u00a0* \u00a0 \u00a0 int val;\n\u00a0* \u00a0 \u00a0 struct ListNode *next;\n\u00a0* };\n\u00a0*\/\n\nstruct ListNode* modifiedList(int* nums, int numsSize, struct ListNode* head) {\n\u00a0 \u00a0 struct ListNode *dummy = (struct ListNode *)malloc(sizeof(struct ListNode)); \/\/\u54e8\u5175\u8282\u70b9\n\u00a0 \u00a0 dummy->next = head;\n\u00a0 \u00a0 struct ListNode *pre = dummy; \/\/\u524d\u9a71\u6307\u9488\n\u00a0 \u00a0 struct ListNode *cur = head; \/\/\u5f53\u524d\u6307\u9488\n\u00a0 \u00a0 int flag = 0; \/\/ flag\u6807\u8bb0\u5f53\u524d\u8282\u70b9\u662f\u5426\u9700\u8981\u5220\u9664\n\u00a0 \u00a0 while(cur != NULL){\n\u00a0 \u00a0 \u00a0 \u00a0 flag = 0;\n             \/\/ \u68c0\u67e5\u5f53\u524d\u8282\u70b9\u503c\u662f\u5426\u5728nums\u6570\u7ec4\u4e2d\n\u00a0 \u00a0 \u00a0 \u00a0 for(int i = 0; i &lt; numsSize; i++){\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 if(cur->val == nums&#91;i]){\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 flag = 1; \/\/ \u6807\u8bb0\u9700\u8981\u5220\u9664\n                        \/\/\/\/ \u5220\u9664\u5f53\u524d\u8282\u70b9\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 pre->next = cur->next;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 cur = cur->next;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 break;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 \u00a0 \u00a0 if(!flag){\n                  \/\/ \u82e5\u672a\u8fdb\u884c\u5220\u9664\u64cd\u4f5c\uff0c\u6b63\u5e38\u79fb\u52a8\u6307\u9488\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 pre = cur;\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 cur = cur->next;\n\u00a0 \u00a0 \u00a0 \u00a0 }\n\u00a0 \u00a0 }\n\u00a0 \u00a0 struct ListNode *ret = dummy->next;\n\u00a0 \u00a0 free(dummy);\n\u00a0 \u00a0 return ret;\n}<\/code><\/pre>\n\n\n\n<p>\u5bf9\u4e8e\u8be5\u7b97\u6cd5\uff0c\u6bcf\u4e00\u4e2a\u94fe\u8868\u5143\u7d20\u90fd\u8981\u904d\u5386nums\u6570\u7ec4\u8fdb\u884c\u67e5\u627e\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(nm)\uff0c\u63d0\u4ea4\u65f6\u4e0d\u51fa\u610f\u5916\u7684\u8d85\u65f6\u4e86\u3002 \u4e8e\u662f\u5728\u67e5\u770b\u4e86\u8bc4\u8bba\u533a\u4ee5\u53ca\u67e5\u627e\u4e86\u54c8\u5e0c\u8868\u76f8\u5173\u5185\u5bb9\u540e\uff0c\u7528\u54c8\u5e0c\u8868\u8fdb\u884c\u4e86\u4f18\u5316<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u89e3\u6cd5\u4e8c\uff1a\u54c8\u5e0c\u8868\u6cd5\uff08\u63a8\u8350\uff09<\/h2>\n\n\n\n<p>\u89e3\u9898\u601d\u8def<\/p>\n\n\n\n<p>\u9488\u5bf9\u89e3\u6cd5\u4e00\u7684\u6027\u80fd\u74f6\u9888\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528<strong>\u54c8\u5e0c\u8868<\/strong>\u6765\u4f18\u5316\u67e5\u627e\u8fc7\u7a0b\u3002\u7531\u4e8e\u9898\u76ee\u9650\u5236\u8282\u70b9\u503c\u8303\u56f4\u5728[1, 10^5]\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u6570\u7ec4\u6765\u6a21\u62df\u54c8\u5e0c\u8868\uff0c\u5c06\u6570\u7ec4\u7684\u67e5\u627e\u65f6\u95f4\u4eceO(m)\u4f18\u5316\u5230O(1)\u3002<\/p>\n\n\n\n<p>\u7b97\u6cd5\u6b65\u9aa4<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u9884\u5904\u7406<\/strong>\uff1a\u521b\u5efa\u54c8\u5e0c\u8868\uff0c\u6807\u8bb0\u6240\u6709\u9700\u8981\u5220\u9664\u7684\u503c<\/li>\n\n\n\n<li><strong>\u904d\u5386\u5220\u9664<\/strong>\uff1a\u4f7f\u7528\u53cc\u6307\u9488\u904d\u5386\u94fe\u8868\uff0c\u901a\u8fc7\u54c8\u5e0c\u8868O(1)\u65f6\u95f4\u5224\u65ad\u662f\u5426\u5220\u9664<\/li>\n\n\n\n<li><strong>\u8fd4\u56de\u7ed3\u679c<\/strong>\uff1a\u8fd4\u56de\u5904\u7406\u540e\u7684\u94fe\u8868\u5934\u8282\u70b9<\/li>\n<\/ol>\n\n\n\n<pre class=\"wp-block-code\"><code>C:\n\/**\n\u00a0* Definition for singly-linked list.\n\u00a0* struct ListNode {\n\u00a0* \u00a0 \u00a0 int val;\n\u00a0* \u00a0 \u00a0 struct ListNode *next;\n\u00a0* };\n\u00a0*\/\nstruct ListNode* modifiedList(int* nums, int numsSize, struct ListNode* head) {\n    if (numsSize == 0) return head;\n    \/\/ \u521b\u5efa\u54c8\u5e0c\u8868\uff08\u6570\u7ec4\u6a21\u62df\uff09\uff0c\u8303\u56f4&#91;1, 100000]\n    int HashMap&#91;100001];\n    memset(HashMap, 0, sizeof(HashMap));\n    \/\/ \u5c06\u9700\u8981\u5220\u9664\u7684\u503c\u6807\u8bb0\u5728\u54c8\u5e0c\u8868\u4e2d\n    for(int i = 0; i &lt; numsSize; i++){\n        HashMap&#91;nums&#91;i]]++;\n    }\n\n    struct ListNode *dummy = (struct ListNode *)malloc(sizeof(struct ListNode));\n    dummy->next = head;\n    \/\/ \u53cc\u6307\u9488\u904d\u5386\n    struct ListNode *pre = dummy;\n    struct ListNode *cur = head;\n    while(cur != NULL){\n        \/\/ O(1)\u65f6\u95f4\u67e5\u627e\u5f53\u524d\u8282\u70b9\u662f\u5426\u9700\u8981\u5220\u9664\n        if(HashMap&#91;cur->val] > 0){\n        pre->next = cur->next;\n        cur = cur->next;\n            }else{\n                \/\/ \u4e0d\u9700\u8981\u5220\u9664\uff1a\u6b63\u5e38\u79fb\u52a8\u6307\u9488\n                pre = cur;\n                cur = cur->next;\n            }\n    }\n    struct ListNode *ret = dummy->next;\n    free(dummy);\n    return ret;\n}<\/code><\/pre>\n\n\n\n<p>\u89e3\u6cd5\u4e8c\u901a\u8fc7\u54c8\u5e0c\u8868\u4f18\u5316\u4e86\u67e5\u627e\u8fc7\u7a0b\uff0c\u5728nums\u6570\u7ec4\u8f83\u5927\u65f6\u6027\u80fd\u63d0\u5347\u663e\u8457\u3002\u8fd9\u662f\u4e00\u4e2a\u5178\u578b\u7684<strong>\u7a7a\u95f4\u6362\u65f6\u95f4<\/strong>\u7684\u4f18\u5316\u7b56\u7565\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9898\u76ee\u8be6\u60c5 \u7ed9\u4f60\u4e00\u4e2a\u6574\u6570\u6570\u7ec4\u00a0nums\u00a0\u548c\u4e00\u4e2a\u94fe\u8868\u7684\u5934\u8282\u70b9\u00a0head\u3002\u4ece\u94fe\u8868\u4e2d\u79fb\u9664\u6240\u6709\u5b58\u5728\u4e8e\u00a0nums\u00a0\u4e2d\u7684\u8282\u70b9 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":37,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,11],"tags":[9],"class_list":["post-49","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-leetcode","category-datastructure","tag-9"],"_links":{"self":[{"href":"https:\/\/qiuqiqaq.fun\/index.php\/wp-json\/wp\/v2\/posts\/49","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/qiuqiqaq.fun\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qiuqiqaq.fun\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qiuqiqaq.fun\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qiuqiqaq.fun\/index.php\/wp-json\/wp\/v2\/comments?post=49"}],"version-history":[{"count":6,"href":"https:\/\/qiuqiqaq.fun\/index.php\/wp-json\/wp\/v2\/posts\/49\/revisions"}],"predecessor-version":[{"id":182,"href":"https:\/\/qiuqiqaq.fun\/index.php\/wp-json\/wp\/v2\/posts\/49\/revisions\/182"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/qiuqiqaq.fun\/index.php\/wp-json\/wp\/v2\/media\/37"}],"wp:attachment":[{"href":"https:\/\/qiuqiqaq.fun\/index.php\/wp-json\/wp\/v2\/media?parent=49"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qiuqiqaq.fun\/index.php\/wp-json\/wp\/v2\/categories?post=49"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qiuqiqaq.fun\/index.php\/wp-json\/wp\/v2\/tags?post=49"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}