{"id":17,"date":"2025-08-25T12:28:39","date_gmt":"2025-08-25T04:28:39","guid":{"rendered":"http:\/\/wysset.com\/?p=17"},"modified":"2025-09-01T08:40:09","modified_gmt":"2025-09-01T00:40:09","slug":"1-%e4%b8%a4%e6%95%b0%e4%b9%8b%e5%92%8c","status":"publish","type":"post","link":"https:\/\/wysset.com\/index.php\/2025\/08\/25\/1-%e4%b8%a4%e6%95%b0%e4%b9%8b%e5%92%8c\/","title":{"rendered":"1.\u4e24\u6570\u4e4b\u548c"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u5148\u770b\u9898\u76ee\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7ed9\u5b9a\u4e00\u4e2a\u6574\u6570\u6570\u7ec4&nbsp;<code>nums<\/code>&nbsp;\u548c\u4e00\u4e2a\u6574\u6570\u76ee\u6807\u503c&nbsp;<code>target<\/code>\uff0c\u8bf7\u4f60\u5728\u8be5\u6570\u7ec4\u4e2d\u627e\u51fa&nbsp;<strong>\u548c\u4e3a\u76ee\u6807\u503c&nbsp;<\/strong><em><code>target<\/code><\/em>&nbsp; \u7684\u90a3&nbsp;<strong>\u4e24\u4e2a<\/strong>&nbsp;\u6574\u6570\uff0c\u5e76\u8fd4\u56de\u5b83\u4eec\u7684\u6570\u7ec4\u4e0b\u6807\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f60\u53ef\u4ee5\u5047\u8bbe\u6bcf\u79cd\u8f93\u5165\u53ea\u4f1a\u5bf9\u5e94\u4e00\u4e2a\u7b54\u6848\uff0c\u5e76\u4e14\u4f60\u4e0d\u80fd\u4f7f\u7528\u4e24\u6b21\u76f8\u540c\u7684\u5143\u7d20\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f60\u53ef\u4ee5\u6309\u4efb\u610f\u987a\u5e8f\u8fd4\u56de\u7b54\u6848\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u793a\u4f8b 1\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><strong>\u8f93\u5165\uff1a<\/strong>nums = [2,7,11,15], target = 9\n<strong>\u8f93\u51fa\uff1a<\/strong>[0,1]\n<strong>\u89e3\u91ca\uff1a<\/strong>\u56e0\u4e3a nums[0] + nums[1] == 9 \uff0c\u8fd4\u56de [0, 1] \u3002<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u793a\u4f8b 2\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><strong>\u8f93\u5165\uff1a<\/strong>nums = [3,2,4], target = 6\n<strong>\u8f93\u51fa\uff1a<\/strong>[1,2]<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u793a\u4f8b 3\uff1a<\/strong><\/p>\n\n\n\n<pre class=\"wp-block-preformatted\"><strong>\u8f93\u5165\uff1a<\/strong>nums = [3,3], target = 6\n<strong>\u8f93\u51fa\uff1a<\/strong>[0,1]<\/pre>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u63d0\u793a\uff1a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><code>2 &lt;= nums.length &lt;= 10<sup>4<\/sup><\/code><\/li>\n\n\n\n<li><code>-10<sup>9<\/sup> &lt;= nums[i] &lt;= 10<sup>9<\/sup><\/code><\/li>\n\n\n\n<li><code>-10<sup>9<\/sup> &lt;= target &lt;= 10<sup>9<\/sup><\/code><\/li>\n\n\n\n<li><strong>\u53ea\u4f1a\u5b58\u5728\u4e00\u4e2a\u6709\u6548\u7b54\u6848<\/strong><\/li>\n<\/ul>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>Whisper<\/strong><\/summary>\n<p class=\"wp-block-paragraph\">\u867d\u7136LeetCode\u4e0a\u6807\u7b7e\u662f\u7b80\u5355\u9898\uff0c\u867d\u7136\u601d\u8def\u6709\uff0c\u4f46\u597d\u4e45\u6ca1\u78b0\u4ee3\u7801\u4e86\u5199\u8d77\u4ee3\u7801\u6765\u8fd8\u662f\u78d5\u78d5\u78b0\u78b0\u7684&#8230;&#8230;<\/p>\n<\/details>\n\n\n\n<p class=\"wp-block-paragraph\">\u601d\u8def\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e00\u4e2a\u60f3\u5230\u7684\u5c31\u662f\u4e24\u5c42\u904d\u5386\u4e86\uff08\u80fd\u529b\u6709\u9650\u554a\uff09\uff0c\u5bf9\u6bd4\u7740\u76ee\u6807\u503c\uff0c\u5148\u5728\u6570\u7ec4\u91cc\u902e\u4e2a\u503c\u4e0d\u653e\uff08\u5047\u5b9a\u4e3ax\uff09\uff0c\u7136\u540e\u6328\u4e2a\u770btarget-x\u503c\u5728\u4e0d\u5728\u6570\u7ec4\u91cc\uff1b\u5982\u679c\u5728\u5c31\u5339\u914d\u6210\u529f\uff0c\u5982\u679c\u4e0d\u5728\u5c31\u7ee7\u7eed\u6362\u4e2a\u503c\u902e&#8230;&#8230;\u7c7b\u4f3c\u4e8e\u8fd9\u6837\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code has-black-color has-white-background-color has-text-color has-background has-link-color wp-elements-1\"><code>for\uff08int i = 0 ;i&lt;nums.size();i++\uff09{\n    for(int j = 0;j&lt;nums.size();j++){\n        if(i==j)continue;\n        if(nums&#91;i]+nums&#91;j]==target)return ;\n    }\n}<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4f46\u8fd9\u4e2a\u7b97\u6cd5\u4e00\u770b\u5c31\u8fc7\u4e8e\u66b4\u529b\u4e86&#8230;&#8230;\u4e8e\u662f\u6211\u60f3\u7740\u5982\u4f55\u6539\u8fdb\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u60f3\u7740\u65e2\u7136\u662f\u4e24\u6570\u4e4b\u548c\uff0c\u90a3\u4e48\u5728\u4e00\u4e2a\u6709\u5e8f\u6570\u5217\u4e2d\u548c\u4e3atarget\u7684\u4e24\u4e2a\u6570\u4e00\u5b9a\u5728\u8fd9\u4e2a\u6570\u5217\u7684\u4e24\u7aef\uff0c\u5c31\u662f\u4e00\u5de6\u4e00\u53f3\u53d6\u3002\u4e8e\u662f\u6211\u60f3\u7740\u5148\u5bf9\u8fd9\u4e2a\u6570\u7ec4\u8fdb\u884c\u6392\u5217\uff0c\u7136\u540e\u53d6\u4e00\u6bb5\u6700\u5927\u503c\u4e0d\u5927\u4e8etarget\u7684\u6570\u5217\uff0c\u4e0d\u5c31\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u5b9e\u73b0\u4e86\u201c\u526a\u679d\u201d\u4e86\u4e48\uff0c\u4e4b\u540e\u518d\u4ece\u4e24\u8fb9\u5f80\u4e2d\u95f4\u53d6\u503c\uff0c\u611f\u89c9\u53ef\u884c\uff01\uff08\u8fd9\u662f\u4e00\u4e2a\u96f7\u70b9\uff0c\u540e\u9762\u8981\u8003\uff01\uff09\u4e8e\u662f\u6211\u7684\u7b2c\u4e00\u7248\u4ee3\u7801\u51fa\u7089\u4e86\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>struct point {\n    int num;\n    int pos;\n};\nclass Solution {\npublic:\n    static bool cmp(const point a, const point b) {\n        return a.num &lt; b.num;\n    }\n    vector&lt;int&gt; twoSum(vector&lt;int&gt;&amp; nums, int target) {\n        vector&lt;int&gt; res;\n        vector&lt;point&gt; points;\n        for (int i = 0; i &lt; nums.size(); i++) {\n            point p;\n            p.num = nums.at(i);\n            p.pos = i;\n            points.push_back(p);\n        }\n        sort(points.begin(), points.end(), cmp);\n        \/*for (int i = 0; i &lt; points-&gt;size();i++) {\n            cout &lt;&lt; points-&gt;at(i).num &lt;&lt; '\\t';\n            cout &lt;&lt; points-&gt;at(i).pos &lt;&lt; endl;\n        }*\/\n        int pos = points.size()-1;\n        for (int i = 0; i &lt; points.size(); i++) {\n            if (points.at(i).num &gt;= target) {\n                pos = i;\n                break;\n            }\n        }\n        int i = 0;\n        int j = pos;\n        \/\/cout &lt;&lt; \"pos:\" &lt;&lt; pos &lt;&lt; endl;\n        for (j; j &gt; i; j--) {\n            int sum = target - points.at(j).num;\n            \/\/cout &lt;&lt; \"j:\" &lt;&lt; j &lt;&lt; endl;\n            for (i;i&lt;j; i++) {\n                \/\/cout &lt;&lt; \"i:\" &lt;&lt; i &lt;&lt; endl;\n                if (points.at(i).num == sum) {\n                    res.push_back(points.at(i).pos);\n                    res.push_back(points.at(j).pos);\n                    return res;\n                }\n\n            }\n            i = 0;\n        }\n\n        return res;\n    }\n};<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u91cc\u6211\u4e3a\u4e86\u65b9\u4fbf\u6392\u5e8f\u540e\u8bb0\u5f55\u6570\u5217\u7684\u521d\u59cb\u5750\u6807\uff0c\u5b9a\u4e49\u4e86\u4e00\u4e2apoint\u7ed3\u6784\u4f53\uff0c\u7528\u4e8e\u5b58\u50a8\u6570\u5217\u7684\u503c\u4ee5\u53ca\u5176\u521d\u59cb\u5750\u6807\u3002\u7136\u540e\u5c31\u662f\u521d\u59cb\u5316\uff0c\u6392\u5e8f\uff0c\u53d6\u6570\u5217\uff0c\u627e\u5750\u6807\u3002\u5176\u4e2d\u6838\u5fc3\u662f\u76f8\u5bf9\u526a\u679d\u7684\u4e24\u5c42for\u5faa\u73af\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>        int i = 0;\n        int j = pos;\n        for (j; j &gt; i; j--) {\n            int sum = target - points.at(j).num;\n            for (i;i&lt;j; i++) {\n                if (points.at(i).num == sum) {\n                    res.push_back(points.at(i).pos);\n                    res.push_back(points.at(j).pos);\n                    return res;\n                }\n            }\n            i = 0;\n        }<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u5207\u770b\u8d77\u6765\u633a\u597d\u7684\uff0c\u7ed3\u679c\u6709\u4e00\u4e2a\u6d4b\u8bd5\u7528\u4f8b\u5361\u58f3\u4e86\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8f93\u5165\uff1anums = [0,4,3,0], target = 0<br>\u9884\u8ba1\u8f93\u51fa\uff1a[0,3]<br>\u5b9e\u9645\u8f93\u51fa\uff1a[ ]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u7684\u7b97\u6cd5\u6ca1\u6709\u8f93\u51fa\uff01\u68c0\u67e5\u4e86\u4e00\u904d\u53d1\u73b0\u662f\u6211\u7684\u7b97\u6cd5\u6ca1\u6709\u8003\u8651\u5230\u6709\u591a\u4e2a\u91cd\u590d\u503c\u7684\u95ee\u9898\uff0c\u5728\u5bfb\u627epos\u7684\u503c\u65f6\u7531\u4e8e\u662f\u4ece\u5c0f\u5f80\u5927\u7684\u627e\uff0c\u4e8e\u662fpos\u4f1a\u505c\u7559\u5728\u7b2c\u4e00\u4e2a\u91cd\u590d\u503c\u4e0a\uff0c\u4e5f\u5c31\u662f[0,0,3,4]\u7684\u7b2c\u4e00\u4e2a0\u4e0a\uff0c\u6700\u540e\u5bfc\u81f4\u7b97\u6cd5\u6ca1\u6709\u8f93\u51fa\u3002<br>\u4e8e\u662f\u6211\u6539\u4e86\u4e00\u4e0bpos\u7684\u627e\u5bfb\u65b9\u5411\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>        int pos = points.size() - 1;\n        for (int i = points.size() - 1; i &gt;= 0; i--) {\n            if (points.at(i).num &lt;= target) {\n                pos = i == points.size() - 1 ? points.size() - 1 : i + 1;\n                break;\n            }\n        }<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u518d\u6b21\u63d0\u4ea4\uff0c\u4e4b\u524d\u7684\u6d4b\u8bd5\u7528\u4f8b\u662f\u8fc7\u4e86\uff0c\u4f46\u65b0\u7684\u95ee\u9898\u6d4b\u8bd5\u7528\u4f8b\u51fa\u73b0\u4e86\uff0c\u662f\u6211\u4e4b\u524d\u903b\u8f91\u4e0a\u57cb\u4e0b\u7684\u5751\uff01\u73b0\u5728\u9047\u5230\u7684\u6d4b\u8bd5\u7528\u4f8b\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8f93\u5165\uff1anums = [-10,-1,-18,-19], target = -19<br>\u9884\u8ba1\u8f93\u51fa\uff1a[1,2]<br>\u5b9e\u9645\u8f93\u51fa\uff1a[ ]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u56e0\u4e3a\u5f53\u65f6\u6ca1\u60f3\u5230\u6709\u8d1f\u6570\u7684\u5b58\u5728\uff0c\u56e0\u6b64\u90a3\u4e2apos\u7684\u53d6\u503c\u5c31\u662f\u591a\u4f59\u7684\uff01\u4e8e\u662f\u6211\u4e00\u4e0d\u505a\u4e8c\u4e0d\u4f11\uff0c\u76f4\u63a5\u4e0d\u8981\u90a3\u4e2apos\u7684\u53d6\u503c\u4e86&#8230;&#8230;&#8230;\u73b0\u5728\u5b8c\u6574\u4ee3\u7801\u957f\u8fd9\u6837\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>struct point {\n    int num;\n    int pos;\n};\nclass Solution {\npublic:\n    static bool cmp(const point a, const point b) { return a.num &lt; b.num; }\n    vector&lt;int&gt; twoSum(vector&lt;int&gt;&amp; nums, int target) {\n        vector&lt;int&gt; res;\n        vector&lt;point&gt; points;\n        for (int i = 0; i &lt; nums.size(); i++) {\n            point p;\n            p.num = nums.at(i);\n            p.pos = i;\n            points.push_back(p);\n        }\n        sort(points.begin(), points.end(), cmp);\n        int pos = points.size() - 1;\n        int i = 0;\n        int j = pos;\n        for (j; j &gt;= i; j--) {\n            int sum = target - points.at(j).num;\n            for (i; i &lt;= j; i++) {\n                if (points.at(i).num == sum) {\n                    res.push_back(points.at(i).pos);\n                    res.push_back(points.at(j).pos);\n                    return res;\n                }\n            }\n            i = 0;\n        }\n        return res;\n    }\n};<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fc7\u662f\u8fc7\u4e86\uff0c\u4f46\u7b97\u6cd5\u590d\u6742\u5ea6\u4e0d\u592a\u7406\u60f3\uff08\u6bd5\u7adf\u76f4\u63a5\u653e\u5f03\u526a\u679d\u4e86\uff0c\u8ddf\u8d64\u88f8\u88f8\u7684\u4e24\u5c42for\u5dee\u4e0d\u591a&#8230;&#8230;\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><div class='fancybox-wrapper' data-fancybox='post-images' href='http:\/\/wysset.com\/wp-content\/uploads\/2025\/08\/1_twoSum-1024x574.png'><img class=\"lazyload lazyload-style-1\" src=\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\"  loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"574\" data-original=\"http:\/\/wysset.com\/wp-content\/uploads\/2025\/08\/1_twoSum-1024x574.png\" src=\"data:image\/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsQAAA7EAZUrDhsAAAANSURBVBhXYzh8+PB\/AAffA0nNPuCLAAAAAElFTkSuQmCC\" alt=\"\" class=\"wp-image-18\"  sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u6700\u540e\u7ed9\u51fa\u539f\u9898\u94fe\u63a5\uff1a<a href=\"https:\/\/leetcode.cn\/problems\/two-sum\/description\/?envType=study-plan-v2&amp;envId=top-100-liked\" data-type=\"link\" data-id=\"https:\/\/leetcode.cn\/problems\/two-sum\/description\/?envType=study-plan-v2&amp;envId=top-100-liked\">LeetCode:\u4e24\u6570\u4e4b\u548c<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5148\u770b\u9898\u76ee\uff1a \u7ed9\u5b9a\u4e00\u4e2a\u6574\u6570\u6570\u7ec4&nbsp;nums&nbsp; [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"footnotes":""},"categories":[2],"tags":[3,6],"class_list":["post-17","post","type-post","status-publish","format-standard","hentry","category-leetcode","tag-easy","tag-hash"],"_links":{"self":[{"href":"https:\/\/wysset.com\/index.php\/wp-json\/wp\/v2\/posts\/17","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wysset.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wysset.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wysset.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wysset.com\/index.php\/wp-json\/wp\/v2\/comments?post=17"}],"version-history":[{"count":4,"href":"https:\/\/wysset.com\/index.php\/wp-json\/wp\/v2\/posts\/17\/revisions"}],"predecessor-version":[{"id":23,"href":"https:\/\/wysset.com\/index.php\/wp-json\/wp\/v2\/posts\/17\/revisions\/23"}],"wp:attachment":[{"href":"https:\/\/wysset.com\/index.php\/wp-json\/wp\/v2\/media?parent=17"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wysset.com\/index.php\/wp-json\/wp\/v2\/categories?post=17"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wysset.com\/index.php\/wp-json\/wp\/v2\/tags?post=17"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}