{"id":105617,"date":"2026-09-15T19:08:34","date_gmt":"2026-09-15T11:08:34","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/105617.html"},"modified":"2026-09-15T19:08:34","modified_gmt":"2026-09-15T11:08:34","slug":"day10-leetcode-26-80%ef%bd%9c%e5%88%a0%e9%99%a4%e6%9c%89%e5%ba%8f%e6%95%b0%e7%bb%84%e9%87%8d%e5%a4%8d%e9%a1%b9%ef%bc%9a%e4%bb%8e-i-1-%e4%b8%80%e6%ad%a5%e6%8e%a8%e5%88%b0-i-k","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/105617.html","title":{"rendered":"DAY10: LeetCode 26 + 80\uff5c\u5220\u9664\u6709\u5e8f\u6570\u7ec4\u91cd\u590d\u9879\uff1a\u4ece `i - 1` \u4e00\u6b65\u63a8\u5230 `i - k`"},"content":{"rendered":"<h2>LeetCode 26 &#043; 80&#xff5c;\u5220\u9664\u6709\u5e8f\u6570\u7ec4\u91cd\u590d\u9879&#xff1a;\u4ece i &#8211; 1 \u4e00\u6b65\u63a8\u5230 i &#8211; k<\/h2>\n<p>\u8fd9\u4e24\u9053\u9898\u653e\u5728\u4e00\u8d77\u770b\u4f1a\u6bd4\u8f83\u6709\u610f\u601d\u3002<\/p>\n<p>LeetCode 26 \u8981\u6c42&#xff1a;\u6bcf\u4e2a\u6570\u5b57\u6700\u591a\u4fdd\u7559 1 \u4e2a LeetCode 80 \u5219\u53d8\u6210&#xff1a;\u6bcf\u4e2a\u6570\u5b57\u6700\u591a\u4fdd\u7559 2 \u4e2a<\/p>\n<p>\u4e00\u5f00\u59cb\u6211\u4ee5\u4e3a\u53ea\u662f\u628a\u201c\u53bb\u91cd\u201d\u7a0d\u5fae\u6539\u4e00\u4e0b&#xff0c;\u4f46\u771f\u6b63\u5199\u5230\u7b2c\u4e8c\u9898\u65f6\u624d\u53d1\u73b0&#xff1a;<\/p>\n<p>\u5982\u679c\u8fd8\u6309\u7167\u7b2c\u4e00\u9898\u7684\u65b9\u5f0f\u548c\u524d\u4e00\u4e2a\u6570\u5b57\u6bd4\u8f83&#xff0c;\u7b2c\u4e8c\u4e2a\u91cd\u590d\u503c\u4e5f\u4f1a\u88ab\u8bef\u5220\u3002<\/p>\n<p>\u6700\u540e\u628a\u4e24\u9898\u653e\u5728\u4e00\u8d77&#xff0c;\u53cd\u800c\u53ef\u4ee5\u5f97\u5230\u4e00\u4e2a\u5f88\u7edf\u4e00\u7684\u89c4\u5f8b&#xff1a;<\/p>\n<p>\u6700\u591a\u4fdd\u7559 1 \u4e2a \u2192 \u770b i &#8211; 1<br \/>\n\u6700\u591a\u4fdd\u7559 2 \u4e2a \u2192 \u770b i &#8211; 2<br \/>\n\u6700\u591a\u4fdd\u7559 k \u4e2a \u2192 \u770b i &#8211; k<\/p>\n<p>\u8fd9\u7bc7\u4e3b\u8981\u8bb0\u5f55\u8fd9\u4e2a\u601d\u8def\u662f\u600e\u4e48\u4e00\u6b65\u4e00\u6b65\u63a8\u51fa\u6765\u7684\u3002<\/p>\n<p>LeetCode 26&#xff1a;LeetCode 26<\/p>\n<p>LeetCode 80&#xff1a;LeetCode 80<\/p>\n<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>LeetCode 26 &#043; 80&#xff5c;\u5220\u9664\u6709\u5e8f\u6570\u7ec4\u91cd\u590d\u9879&#xff1a;\u4ece &#096;i &#8211; 1&#096; \u4e00\u6b65\u63a8\u5230 &#096;i &#8211; k&#096;<\/li>\n<li>\u4e00\u3001\u8fd9\u4e24\u9053\u9898\u4e3a\u4ec0\u4e48\u53ef\u4ee5\u7528\u53cc\u6307\u9488&#xff1f;<\/li>\n<li>\u4e8c\u3001\u5148\u7edf\u4e00\u4e24\u4e2a\u6307\u9488\u7684\u542b\u4e49<\/li>\n<li>\u4e09\u3001LeetCode 26&#xff1a;\u6bcf\u4e2a\u6570\u5b57\u6700\u591a\u4fdd\u7559 1 \u4e2a<\/li>\n<li>\n<ul>\n<li>\u7b2c\u4e00\u6b65&#xff1a;\u7b2c\u4e00\u4e2a\u6570\u5b57\u4e00\u5b9a\u53ef\u4ee5\u4fdd\u7559<\/li>\n<li>\u600e\u4e48\u5224\u65ad nums[j] \u8981\u4e0d\u8981\u4fdd\u7559&#xff1f;<\/li>\n<li>\u7528\u4e00\u4e2a\u4f8b\u5b50\u8d70\u4e00\u904d<\/li>\n<li>LeetCode 26 \u5b8c\u6574\u4ee3\u7801<\/li>\n<\/ul>\n<\/li>\n<li>\u56db\u3001\u6765\u5230 LeetCode 80&#xff1a;\u73b0\u5728\u5141\u8bb8\u51fa\u73b0\u4e24\u6b21<\/li>\n<li>\n<ul>\n<li>\u90a3\u600e\u4e48\u5224\u65ad\u5b83\u4f1a\u4e0d\u4f1a\u6210\u4e3a\u7b2c 3 \u4e2a&#xff1f;<\/li>\n<li>\u5982\u679c\u771f\u7684\u5df2\u7ecf\u6709\u4e24\u4e2a\u76f8\u540c\u6570\u5b57\u5462&#xff1f;<\/li>\n<li>\u7528\u5b8c\u6574\u4f8b\u5b50\u8d70\u4e00\u904d<\/li>\n<li>LeetCode 80 \u5b8c\u6574\u4ee3\u7801<\/li>\n<\/ul>\n<\/li>\n<li>\u4e94\u3001\u628a 26 \u548c 80 \u653e\u5728\u4e00\u8d77\u770b<\/li>\n<li>\n<ul>\n<li>LeetCode 26<\/li>\n<li>LeetCode 80<\/li>\n<li>\u901a\u7528\u7684 &#096;i &#8211; k&#096; \u6a21\u677f<\/li>\n<li>\u8fd9\u4e2a\u65b9\u6cd5\u6210\u7acb -&gt; \u6709\u5e8f\u662f\u5173\u952e<\/li>\n<\/ul>\n<\/li>\n<li>\u516d\u3001\u65f6\u95f4\u590d\u6742\u5ea6\u548c\u7a7a\u95f4\u590d\u6742\u5ea6<\/li>\n<\/ul>\n<hr \/>\n<h2>\u4e00\u3001\u8fd9\u4e24\u9053\u9898\u4e3a\u4ec0\u4e48\u53ef\u4ee5\u7528\u53cc\u6307\u9488&#xff1f;<\/h2>\n<p>\u4e24\u9053\u9898\u90fd\u6709\u4e24\u4e2a\u5f88\u91cd\u8981\u7684\u6761\u4ef6&#xff1a;<\/p>\n<p>1. \u6570\u7ec4\u5df2\u7ecf\u6309\u7167\u9012\u589e\u987a\u5e8f\u6392\u5217<br \/>\n26&#xff1a;\u975e\u4e25\u683c\u9012\u589e<br \/>\n80&#xff1a;\u6709\u5e8f\u6570\u7ec4<br \/>\n2. \u8981\u6c42\u539f\u5730\u4fee\u6539\u6570\u7ec4<\/p>\n<p>\u5148\u770b&#xff1a;\u9012\u589e<\/p>\n<p>\u610f\u601d\u5c31\u662f&#xff1a;<\/p>\n<p>\u4ece\u5c0f\u5230\u5927\u6392\u5217<\/p>\n<p>\u4f46\u5141\u8bb8\u76f8\u7b49 &#8211;&gt; \u975e\u4e25\u683c<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>[0, 0, 0, 1, 1, 2, 3, 3]<\/p>\n<p>\u56e0\u4e3a\u6570\u7ec4\u5df2\u7ecf\u6709\u5e8f&#xff0c;\u6240\u4ee5\u76f8\u540c\u6570\u5b57\u4e00\u5b9a\u4f1a\u6328\u5728\u4e00\u8d77\u3002<\/p>\n<p>\u8fd9\u5c31\u7ed9\u4e86\u6211\u4eec\u4e00\u4e2a\u5f88\u91cd\u8981\u7684\u6761\u4ef6&#xff1a;<\/p>\n<p>\u53ea\u9700\u8981\u4e00\u8def\u5411\u540e\u626b\u63cf&#xff0c;\u5c31\u53ef\u4ee5\u5224\u65ad\u5f53\u524d\u6570\u5b57\u662f\u4e0d\u662f\u5e94\u8be5\u4fdd\u7559\u3002<\/p>\n<p>\u53e6\u5916\u9898\u76ee\u8981\u6c42&#xff1a;<\/p>\n<p>\u539f\u5730\u4fee\u6539<\/p>\n<p>\u4e5f\u5c31\u662f\u8bf4\u4e0d\u80fd\u7b80\u5355\u5730\u91cd\u65b0\u521b\u5efa\u4e00\u4e2a\u7ed3\u679c\u6570\u7ec4&#xff0c;\u518d\u628a\u7b54\u6848\u653e\u8fdb\u53bb\u3002<\/p>\n<p>\u6240\u4ee5\u53ef\u4ee5\u8003\u8651&#xff1a;<\/p>\n<p>\u4e00\u4e2a\u6307\u9488\u8d1f\u8d23\u5411\u540e\u5bfb\u627e<br \/>\n\u53e6\u4e00\u4e2a\u6307\u9488\u8d1f\u8d23\u5f80\u524d\u5199\u5165<\/p>\n<p>\u8fd9\u5c31\u662f\u8fd9\u4e24\u9053\u9898\u7684\u5feb\u6162\u53cc\u6307\u9488\u3002<\/p>\n<hr \/>\n<h2>\u4e8c\u3001\u5148\u7edf\u4e00\u4e24\u4e2a\u6307\u9488\u7684\u542b\u4e49<\/h2>\n<p>\u4e3a\u4e86\u65b9\u4fbf\u540e\u9762\u4ece 26 \u63a8\u5230 80&#xff0c;\u6211\u628a\u4e24\u9053\u9898\u91cc\u7684 i \u548c j \u90fd\u7edf\u4e00\u6210\u540c\u4e00\u4e2a\u542b\u4e49\u3002<\/p>\n<p>j \u2192 \u8d1f\u8d23\u5411\u540e\u626b\u63cf\u539f\u6570\u7ec4<\/p>\n<p>i \u2192 \u4e0b\u4e00\u4e2a\u53ef\u4ee5\u5199\u5165\u7684\u4f4d\u7f6e<\/p>\n<p>\u4e5f\u5c31\u662f\u8bf4&#xff1a;<\/p>\n<p>nums[0:i]<\/p>\n<p>\u59cb\u7ec8\u8868\u793a&#xff1a;<\/p>\n<p>\u5df2\u7ecf\u6574\u7406\u597d\u7684\u6709\u6548\u533a\u57df\u3002<\/p>\n<p>\u6ce8\u610f\u8fd9\u91cc Python \u5207\u7247&#xff1a;<\/p>\n<p>nums<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">:<\/span>i<span class=\"token punctuation\">]<\/span><\/p>\n<p>\u662f\u4e0d\u5305\u542b i \u7684\u3002<\/p>\n<p>\u6240\u4ee5\u5982\u679c&#xff1a;<\/p>\n<p>i &#061; 3<\/p>\n<p>\u8bf4\u660e&#xff1a;<\/p>\n<p>nums[0]<br \/>\nnums[1]<br \/>\nnums[2]<\/p>\n<p>\u5df2\u7ecf\u662f\u6574\u7406\u597d\u7684\u90e8\u5206\u3002<\/p>\n<p>\u4e00\u5171\u6709&#xff1a;<\/p>\n<p>3 \u4e2a\u6709\u6548\u5143\u7d20<\/p>\n<p>\u800c&#xff1a;<\/p>\n<p>nums[3]<\/p>\n<p>\u6b63\u597d\u5c31\u662f\u4e0b\u4e00\u4e2a\u51c6\u5907\u5199\u5165\u7684\u4f4d\u7f6e\u3002<\/p>\n<p>\u56e0\u6b64&#xff1a;<\/p>\n<p>\u5f53 i \u88ab\u5b9a\u4e49\u4e3a\u201c\u4e0b\u4e00\u4e2a\u5199\u5165\u4f4d\u7f6e\u201d\u65f6&#xff0c;\u6700\u540e\u7684 i \u672c\u8eab\u4e5f\u6b63\u597d\u7b49\u4e8e\u6709\u6548\u5143\u7d20\u6570\u91cf\u3002 \u56e0\u4e3a\u6570\u7ec4\u4e0b\u6807\u4ece 0 \u5f00\u59cb\u3002<\/p>\n<p>\u6240\u4ee5\u6700\u7ec8\u53ef\u4ee5\u76f4\u63a5&#xff1a;<\/p>\n<p><span class=\"token keyword\">return<\/span> i<\/p>\n<hr \/>\n<h2>\u4e09\u3001LeetCode 26&#xff1a;\u6bcf\u4e2a\u6570\u5b57\u6700\u591a\u4fdd\u7559 1 \u4e2a<\/h2>\n<p>\u5148\u770b\u7b2c\u4e00\u9053\u9898\u3002<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>nums &#061; [0,0,1,1,1,2,2,3,3,4]<\/p>\n<p>\u9898\u76ee\u5e0c\u671b\u6570\u7ec4\u524d\u9762\u6700\u7ec8\u53d8\u6210&#xff1a;<\/p>\n<p>[0,1,2,3,4,&#8230;]<\/p>\n<p>\u4e5f\u5c31\u662f\u8bf4&#xff1a;<\/p>\n<p>\u6bcf\u4e2a\u6570\u5b57\u53ea\u4fdd\u7559 1 \u4e2a<\/p>\n<hr \/>\n<h3>\u7b2c\u4e00\u6b65&#xff1a;\u7b2c\u4e00\u4e2a\u6570\u5b57\u4e00\u5b9a\u53ef\u4ee5\u4fdd\u7559<\/h3>\n<p>\u56e0\u4e3a\u6570\u7ec4\u81f3\u5c11\u6709\u4e00\u4e2a\u5143\u7d20&#xff0c;\u6240\u4ee5&#xff1a;<\/p>\n<p>nums[0]<\/p>\n<p>\u4e00\u5b9a\u53ef\u4ee5\u7559\u4e0b\u3002<\/p>\n<p>\u56e0\u6b64\u53ef\u4ee5\u76f4\u63a5\u8ba4\u4e3a&#xff1a;<\/p>\n<p>nums[0:1]<\/p>\n<p>\u5df2\u7ecf\u662f\u6574\u7406\u597d\u7684\u533a\u57df\u3002<\/p>\n<p>\u4e5f\u5c31\u662f&#xff1a;<\/p>\n<p>i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><\/p>\n<p>\u6b64\u65f6&#xff1a;<\/p>\n<p>i<\/p>\n<p>\u6307\u5411&#xff1a;<\/p>\n<p>\u4e0b\u4e00\u4e2a\u53ef\u4ee5\u5199\u5165\u7684\u4f4d\u7f6e<\/p>\n<p>\u7136\u540e\u8ba9&#xff1a;<\/p>\n<p>j<\/p>\n<p>\u4ece\u7b2c\u4e8c\u4e2a\u6570\u5b57\u5f00\u59cb\u5bfb\u627e&#xff1a;<\/p>\n<p><span class=\"token keyword\">for<\/span> j <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>nums<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><\/p>\n<hr \/>\n<h3>\u600e\u4e48\u5224\u65ad nums[j] \u8981\u4e0d\u8981\u4fdd\u7559&#xff1f;<\/h3>\n<p>\u56e0\u4e3a\u8fd9\u9053\u9898&#xff1a;<\/p>\n<p>\u6bcf\u4e2a\u6570\u5b57\u53ea\u80fd\u51fa\u73b0 1 \u6b21<\/p>\n<p>\u6240\u4ee5\u5f53\u524d\u7684&#xff1a;<\/p>\n<p>nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><\/p>\n<p>\u53ea\u9700\u8981\u548c&#xff1a;<\/p>\n<p>\u6700\u540e\u4e00\u4e2a\u5df2\u7ecf\u4fdd\u7559\u4e0b\u6765\u7684\u6570\u5b57<\/p>\n<p>\u6bd4\u8f83\u3002<\/p>\n<p>\u800c\u5df2\u7ecf\u6574\u7406\u597d\u7684\u533a\u57df\u662f&#xff1a;<\/p>\n<p>nums[0:i]<\/p>\n<p>\u6700\u540e\u4e00\u4e2a\u6709\u6548\u5143\u7d20\u4e0b\u6807\u5c31\u662f&#xff1a;<\/p>\n<p>i &#8211; 1<\/p>\n<p>\u6240\u4ee5\u5224\u65ad&#xff1a;<\/p>\n<p>nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!&#061;<\/span> nums<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><\/p>\n<p>\u5982\u679c\u4e0d\u540c&#xff1a;<\/p>\n<p>\u8bf4\u660e\u51fa\u73b0\u4e86\u4e00\u4e2a\u65b0\u7684\u6570\u5b57<\/p>\n<p>\u90a3\u5c31\u5e94\u8be5\u628a\u5b83\u5199\u5230&#xff1a;<\/p>\n<p>\u4e0b\u4e00\u4e2a\u53ef\u4ee5\u5199\u5165\u7684\u4f4d\u7f6e i<\/p>\n<p>\u4e5f\u5c31\u662f&#xff1a;<\/p>\n<p>nums<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><\/p>\n<p>\u7136\u540e&#xff1a;<\/p>\n<p>i <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token number\">1<\/span><\/p>\n<p>\u628a\u5199\u5165\u4f4d\u7f6e\u7ee7\u7eed\u5411\u540e\u79fb\u52a8\u3002<\/p>\n<hr \/>\n<h3>\u7528\u4e00\u4e2a\u4f8b\u5b50\u8d70\u4e00\u904d<\/h3>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>nums &#061; [0,0,0,1,1,2]<\/p>\n<p>\u5f00\u59cb&#xff1a;<\/p>\n<p>i &#061; 1<\/p>\n<p>\u53ef\u4ee5\u7406\u89e3\u6210&#xff1a;<\/p>\n<p>[0 | 0,0,1,1,2]<br \/>\n     \u2191<br \/>\n     i<\/p>\n<p>\u524d\u9762\u7684&#xff1a;<\/p>\n<p>0<\/p>\n<p>\u5df2\u7ecf\u4fdd\u7559\u3002<\/p>\n<hr \/>\n<p>j &#061; 1<\/p>\n<p>\u5f53\u524d&#xff1a;<\/p>\n<p>nums[j] &#061; 0<\/p>\n<p>\u6700\u540e\u4e00\u4e2a\u4fdd\u7559\u503c&#xff1a;<\/p>\n<p>nums[i &#8211; 1] &#061; nums[0] &#061; 0<\/p>\n<p>\u76f8\u540c&#xff1a;<\/p>\n<p>0 &#061;&#061; 0<\/p>\n<p>\u8bf4\u660e\u662f\u91cd\u590d\u503c\u3002<\/p>\n<p>\u8df3\u8fc7\u3002<\/p>\n<hr \/>\n<p>j &#061; 2<\/p>\n<p>\u8fd8\u662f&#xff1a;<\/p>\n<p>0<\/p>\n<p>\u548c\u6700\u540e\u4e00\u4e2a\u4fdd\u7559\u503c&#xff1a;<\/p>\n<p>0<\/p>\n<p>\u4e00\u6837\u3002<\/p>\n<p>\u7ee7\u7eed\u8df3\u8fc7\u3002<\/p>\n<hr \/>\n<p>j &#061; 3<\/p>\n<p>\u73b0\u5728&#xff1a;<\/p>\n<p>nums[j] &#061; 1<\/p>\n<p>\u800c&#xff1a;<\/p>\n<p>nums[i &#8211; 1] &#061; 0<\/p>\n<p>\u4e0d\u540c\u3002<\/p>\n<p>\u8bf4\u660e&#xff1a;<\/p>\n<p>1<\/p>\n<p>\u662f\u4e00\u4e2a\u65b0\u7684\u6570\u5b57\u3002<\/p>\n<p>\u6240\u4ee5&#xff1a;<\/p>\n<p>nums<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><\/p>\n<p>\u4e5f\u5c31\u662f&#xff1a;<\/p>\n<p>nums[1] &#061; 1<\/p>\n<p>\u6570\u7ec4\u524d\u9762\u53d8\u6210&#xff1a;<\/p>\n<p>[0,1,&#8230;]<\/p>\n<p>\u7136\u540e&#xff1a;<\/p>\n<p>i <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token number\">1<\/span><\/p>\n<p>\u53d8\u6210&#xff1a;<\/p>\n<p>i &#061; 2<\/p>\n<hr \/>\n<p>\u540e\u9762\u7ee7\u7eed<\/p>\n<p>\u518d\u6b21\u9047\u5230&#xff1a;<\/p>\n<p>1<\/p>\n<p>\u56e0\u4e3a&#xff1a;<\/p>\n<p>1 &#061;&#061; nums[i &#8211; 1]<\/p>\n<p>\u8df3\u8fc7\u3002<\/p>\n<p>\u9047\u5230&#xff1a;<\/p>\n<p>2<\/p>\n<p>\u56e0\u4e3a&#xff1a;<\/p>\n<p>2 !&#061; nums[i &#8211; 1]<\/p>\n<p>\u5199\u8fdb\u53bb\u3002<\/p>\n<p>\u6700\u540e\u524d\u9762\u53d8\u6210&#xff1a;<\/p>\n<p>[0,1,2,&#8230;]<\/p>\n<p>\u800c&#xff1a;<\/p>\n<p>i &#061; 3<\/p>\n<p>\u8bf4\u660e\u4e00\u5171\u6709&#xff1a;<\/p>\n<p>3 \u4e2a\u6709\u6548\u5143\u7d20<\/p>\n<p>\u6240\u4ee5\u76f4\u63a5&#xff1a;<\/p>\n<p><span class=\"token keyword\">return<\/span> i<\/p>\n<hr \/>\n<h3>LeetCode 26 \u5b8c\u6574\u4ee3\u7801<\/h3>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Solution<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">removeDuplicates<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> nums<span class=\"token punctuation\">:<\/span> List<span class=\"token punctuation\">[<\/span><span class=\"token builtin\">int<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">int<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><\/p>\n<p>        <span class=\"token keyword\">for<\/span> j <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>nums<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!&#061;<\/span> nums<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><br \/>\n                nums<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><br \/>\n                i <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token number\">1<\/span><\/p>\n<p>        <span class=\"token keyword\">return<\/span> i<\/p>\n<p>\u6574\u4e2a\u8fc7\u7a0b\u53ef\u4ee5\u7b80\u5355\u8bb0\u6210&#xff1a;<\/p>\n<p>j \u2192 \u5f80\u540e\u5bfb\u627e\u65b0\u7684\u6570\u5b57<\/p>\n<p>i \u2192 \u6307\u5411\u4e0b\u4e00\u4e2a\u5199\u5165\u4f4d\u7f6e<\/p>\n<p>\u800c\u5224\u65ad\u6761\u4ef6&#xff1a;<\/p>\n<p>nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!&#061;<\/span> nums<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><\/p>\n<p>\u5b9e\u9645\u4e0a\u662f\u5728\u95ee&#xff1a;<\/p>\n<p>\u5f53\u524d\u6570\u5b57\u548c\u6700\u540e\u4e00\u4e2a\u5df2\u7ecf\u4fdd\u7559\u7684\u6570\u5b57\u4e0d\u540c\u5417&#xff1f;<\/p>\n<p>\u5982\u679c\u4e0d\u540c&#xff1a;<\/p>\n<p>\u5c31\u662f\u65b0\u6570\u5b57 \u2192 \u4fdd\u7559<\/p>\n<hr \/>\n<h2>\u56db\u3001\u6765\u5230 LeetCode 80&#xff1a;\u73b0\u5728\u5141\u8bb8\u51fa\u73b0\u4e24\u6b21<\/h2>\n<p>\u7b2c\u4e8c\u9898\u548c\u7b2c\u4e00\u9898\u5f88\u50cf\u3002<\/p>\n<p>\u4f46\u89c4\u5219\u53d8\u6210&#xff1a;<\/p>\n<p>\u6bcf\u4e2a\u6570\u5b57\u6700\u591a\u4fdd\u7559 2 \u4e2a<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>[1,1,1,1,2,3,3]<\/p>\n<p>\u6700\u7ec8\u5e94\u8be5\u53d8\u6210&#xff1a;<\/p>\n<p>[1,1,2,3,3,&#8230;]<\/p>\n<p>\u8fd9\u91cc\u771f\u6b63\u9ebb\u70e6\u7684\u5730\u65b9\u4e5f\u51fa\u73b0\u4e86\u3002<\/p>\n<p>\u5982\u679c\u7ee7\u7eed\u6cbf\u7528 26 \u7684\u5224\u65ad&#xff1a;<\/p>\n<p>nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!&#061;<\/span> nums<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><\/p>\n<p>\u5c31\u4f1a\u51fa\u95ee\u9898:<\/p>\n<p>\u5047\u8bbe\u73b0\u5728\u5df2\u7ecf\u6574\u7406\u6210&#xff1a;<\/p>\n<p>[1,1,2,3,&#8230;]<\/p>\n<p>\u73b0\u5728\u53c8\u9047\u5230\u4e00\u4e2a&#xff1a;<\/p>\n<p>3<\/p>\n<p>\u5982\u679c\u6309\u7167\u7b2c\u4e00\u9898\u7684\u5224\u65ad&#xff1a;<\/p>\n<p>\u5f53\u524d 3<br \/>\n\u548c<br \/>\n\u524d\u4e00\u4e2a 3<\/p>\n<p>\u76f8\u540c\u3002<\/p>\n<p>\u90a3\u4e48\u5c31\u4f1a\u8ba4\u4e3a&#xff1a;<\/p>\n<p>\u91cd\u590d\u4e86 \u2192 \u8df3\u8fc7<\/p>\n<p>\u4f46\u8fd9\u662f\u9519\u7684\u3002<\/p>\n<p>\u56e0\u4e3a\u8fd9\u9053\u9898\u5141\u8bb8&#xff1a;<\/p>\n<p>3 \u51fa\u73b0\u4e24\u6b21<\/p>\n<p>\u6240\u4ee5&#xff1a;<\/p>\n<p>3,3<\/p>\n<p>\u5b8c\u5168\u5408\u6cd5\u3002<\/p>\n<p>\u8fd9\u8bf4\u660e&#xff1a;<\/p>\n<p>LeetCode 80 \u4e0d\u80fd\u518d\u901a\u8fc7 \u201c\u662f\u5426\u548c\u524d\u4e00\u4e2a\u4e00\u6837\u201d \u5224\u65ad\u8981\u4e0d\u8981\u4fdd\u7559\u3002<\/p>\n<p>\u771f\u6b63\u5e94\u8be5\u95ee\u7684\u662f&#xff1a;<\/p>\n<p>\u5982\u679c\u6211\u628a\u5f53\u524d\u6570\u5b57\u653e\u8fdb\u53bb&#xff0c;\u5b83\u4f1a\u4e0d\u4f1a\u6210\u4e3a\u7b2c 3 \u4e2a\u76f8\u540c\u6570\u5b57&#xff1f;<\/p>\n<hr \/>\n<h3>\u90a3\u600e\u4e48\u5224\u65ad\u5b83\u4f1a\u4e0d\u4f1a\u6210\u4e3a\u7b2c 3 \u4e2a&#xff1f;<\/h3>\n<p>\u4f8b\u5982\u5df2\u7ecf\u6574\u7406\u597d\u7684\u90e8\u5206\u662f&#xff1a;<\/p>\n<p>[1,1,2,3]<\/p>\n<p>\u73b0\u5728\u53c8\u6765\u4e86&#xff1a;<\/p>\n<p>3<\/p>\n<p>\u5f53\u524d\u4e0b\u4e00\u4e2a\u5199\u5165\u4f4d\u7f6e&#xff1a;<\/p>\n<p>i &#061; 4<\/p>\n<p>\u5982\u679c\u6211\u4eec\u53ea\u770b&#xff1a;<\/p>\n<p>i &#8211; 1<\/p>\n<p>\u5f97\u5230\u7684\u662f&#xff1a;<\/p>\n<p>nums[3] &#061; 3<\/p>\n<p>\u5f53\u7136\u76f8\u540c\u3002<\/p>\n<p>\u4f46\u8fd9\u53ea\u80fd\u8bc1\u660e&#xff1a;<\/p>\n<p>\u524d\u9762\u5df2\u7ecf\u6709 1 \u4e2a 3<\/p>\n<p>\u8fd9\u5e76\u4e0d\u8fdd\u89c4\u3002<\/p>\n<p>\u6211\u4eec\u771f\u6b63\u5173\u5fc3\u7684\u662f&#xff1a;<\/p>\n<p>\u524d\u9762\u662f\u4e0d\u662f\u5df2\u7ecf\u6709\u4e24\u4e2a 3&#xff1f;<\/p>\n<p>\u6240\u4ee5\u5e94\u8be5\u518d\u5f80\u524d\u770b\u4e00\u4f4d&#xff1a;<\/p>\n<p>i &#8211; 2<\/p>\n<p>\u73b0\u5728&#xff1a;<\/p>\n<p>i &#061; 4<\/p>\n<p>\u6240\u4ee5&#xff1a;<\/p>\n<p>i &#8211; 2 &#061; 2<\/p>\n<p>\u800c&#xff1a;<\/p>\n<p>nums[2] &#061; 2<\/p>\n<p>\u5f53\u524d&#xff1a;<\/p>\n<p>nums[j] &#061; 3<\/p>\n<p>\u4e8e\u662f&#xff1a;<\/p>\n<p>3 !&#061; 2<\/p>\n<p>\u8bf4\u660e&#xff1a;<\/p>\n<p>\u5f53\u524d\u8fd9\u4e2a 3 \u653e\u8fdb\u53bb\u4ee5\u540e&#xff0c;<br \/>\n\u6700\u591a\u53ea\u662f\u7b2c\u4e8c\u4e2a 3<\/p>\n<p>\u6240\u4ee5\u53ef\u4ee5\u4fdd\u7559\u3002<\/p>\n<p>\u6700\u7ec8&#xff1a;<\/p>\n<p>[1,1,2,3,3]<\/p>\n<p>\u6b63\u597d\u5408\u6cd5\u3002<\/p>\n<hr \/>\n<h3>\u5982\u679c\u771f\u7684\u5df2\u7ecf\u6709\u4e24\u4e2a\u76f8\u540c\u6570\u5b57\u5462&#xff1f;<\/h3>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>[1,1,&#8230;]<\/p>\n<p>\u6b64\u65f6&#xff1a;<\/p>\n<p>i &#061; 2<\/p>\n<p>\u53c8\u6765\u4e86\u4e00\u4e2a&#xff1a;<\/p>\n<p>1<\/p>\n<p>\u6bd4\u8f83&#xff1a;<\/p>\n<p>nums[j]<br \/>\n\u548c<br \/>\nnums[i &#8211; 2]<\/p>\n<p>\u4e5f\u5c31\u662f&#xff1a;<\/p>\n<p>1<br \/>\n\u548c<br \/>\nnums[0]<\/p>\n<p>\u7ed3\u679c&#xff1a;<\/p>\n<p>1 &#061;&#061; 1<\/p>\n<p>\u8fd9\u8bf4\u660e&#xff1a;<\/p>\n<p>\u5728\u5f53\u524d\u5199\u5165\u4f4d\u7f6e\u4e4b\u524d&#xff0c;<br \/>\n\u5df2\u7ecf\u6709\u4e24\u4e2a 1 \u88ab\u4fdd\u7559\u4e0b\u6765\u4e86<\/p>\n<p>\u5982\u679c\u518d\u5199\u5f53\u524d\u8fd9\u4e2a&#xff1a;<\/p>\n<p>1<\/p>\n<p>\u5c31\u4f1a\u53d8\u6210&#xff1a;<\/p>\n<p>1,1,1<\/p>\n<p>\u4e5f\u5c31\u662f\u7b2c 3 \u4e2a\u3002<\/p>\n<p>\u6240\u4ee5\u4e0d\u80fd\u4fdd\u7559\u3002<\/p>\n<hr \/>\n<h3>\u7528\u5b8c\u6574\u4f8b\u5b50\u8d70\u4e00\u904d<\/h3>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>nums &#061; [1,1,1,1,2,3,3]<\/p>\n<p>\u56e0\u4e3a\u6700\u591a\u5141\u8bb8\u4e24\u4e2a&#xff0c;\u6240\u4ee5\u524d\u4e24\u4e2a\u5143\u7d20\u65e0\u8bba\u5982\u4f55\u90fd\u53ef\u4ee5\u4fdd\u7559\u3002<\/p>\n<p>\u56e0\u6b64&#xff1a;<\/p>\n<p>i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">2<\/span><\/p>\n<p>\u524d\u9762&#xff1a;<\/p>\n<p>[1,1]<\/p>\n<p>\u5df2\u7ecf\u662f\u6709\u6548\u533a\u57df\u3002<\/p>\n<p>\u8ba9 j \u4ece 2 \u5f00\u59cb\u3002<\/p>\n<hr \/>\n<p>j &#061; 2<\/p>\n<p>\u5f53\u524d&#xff1a;<\/p>\n<p>nums[j] &#061; 1<\/p>\n<p>\u6bd4\u8f83&#xff1a;<\/p>\n<p>nums[i &#8211; 2] &#061; nums[2-2] &#061; nums[0] &#061; 1<\/p>\n<p>\u4e8e\u662f&#xff1a;<\/p>\n<p>1 &#061;&#061; 1<\/p>\n<p>\u8bf4\u660e\u5982\u679c\u518d\u653e\u8fdb\u53bb&#xff0c;\u5c31\u4f1a\u6210\u4e3a\u7b2c 3 \u4e2a 1\u3002<\/p>\n<p>\u8df3\u8fc7\u3002<\/p>\n<hr \/>\n<p>j &#061; 3<\/p>\n<p>\u8fd8\u662f&#xff1a;<\/p>\n<p>1<\/p>\n<p>\u56e0\u4e3a\u524d\u9762\u6ca1\u6709\u5199\u5165\u65b0\u5143\u7d20&#xff0c;\u6240\u4ee5&#xff1a;i \u4ecd\u7136\u662f 2<\/p>\n<p>\u7ee7\u7eed\u6bd4\u8f83&#xff1a;<\/p>\n<p>nums[i &#8211; 2] &#061; nums[0] &#061; 1<\/p>\n<p>\u8fd8\u662f\u76f8\u540c\u3002<\/p>\n<p>\u7ee7\u7eed\u8df3\u8fc7\u3002<\/p>\n<hr \/>\n<p>j &#061; 4<\/p>\n<p>\u5f53\u524d&#xff1a;<\/p>\n<p>nums[j] &#061; 2<\/p>\n<p>\u6bd4\u8f83&#xff1a;<\/p>\n<p>nums[i &#8211; 2] &#061; nums[0] &#061; 1<\/p>\n<p>\u4e0d\u540c&#xff1a;<\/p>\n<p>2 !&#061; 1<\/p>\n<p>\u8bf4\u660e 2 \u53ef\u4ee5\u4fdd\u7559\u3002<\/p>\n<p>\u6240\u4ee5&#xff1a;<\/p>\n<p>nums<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><\/p>\n<p>\u53d8\u6210&#xff1a;<\/p>\n<p>[1,1,2,&#8230;]<\/p>\n<p>\u7136\u540e&#xff1a;<\/p>\n<p>i &#061; i &#043; 1 &#061; 3<\/p>\n<hr \/>\n<p>j &#061; 5<\/p>\n<p>\u5f53\u524d\u503c\u4e3a&#xff1a;<\/p>\n<p>nums[j] &#061; 3<\/p>\n<p>\u6bd4\u8f83&#xff1a;<\/p>\n<p>nums[i &#8211; 2] &#061; numms[3-2] &#061; nums[1] &#061; 1<\/p>\n<p>\u4e8e\u662f&#xff1a;<\/p>\n<p>3 !&#061; 1<\/p>\n<p>\u53ef\u4ee5\u4fdd\u7559\u3002<\/p>\n<p>\u53d8\u6210&#xff1a;<\/p>\n<p>[1,1,2,3,&#8230;]<\/p>\n<p>\u7136\u540e&#xff1a;<\/p>\n<p>i &#061; i &#043; 1 &#061; 4<\/p>\n<hr \/>\n<p>j &#061; 6<\/p>\n<p>\u53c8\u6765\u4e86\u4e00\u4e2a&#xff1a;<\/p>\n<p>3<\/p>\n<p>\u770b&#xff1a;<\/p>\n<p>nums[i &#8211; 2] &#061; nums[4-2] &#061; 2<\/p>\n<p>\u4e8e\u662f&#xff1a;<\/p>\n<p>3 !&#061; 2<\/p>\n<p>\u8bf4\u660e\u5f53\u524d\u8fd9\u4e2a 3 \u53ea\u662f\u7b2c\u4e8c\u4e2a 3\u3002<\/p>\n<p>\u53ef\u4ee5\u4fdd\u7559\u3002<\/p>\n<p>\u6700\u7ec8&#xff1a;<\/p>\n<p>[1,1,2,3,3,&#8230;]<\/p>\n<p>\u6b63\u597d\u7b26\u5408\u9898\u76ee\u8981\u6c42\u3002<\/p>\n<hr \/>\n<h3>LeetCode 80 \u5b8c\u6574\u4ee3\u7801<\/h3>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Solution<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token keyword\">def<\/span> <span class=\"token function\">removeDuplicates<\/span><span class=\"token punctuation\">(<\/span>self<span class=\"token punctuation\">,<\/span> nums<span class=\"token punctuation\">:<\/span> List<span class=\"token punctuation\">[<\/span><span class=\"token builtin\">int<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&#8211;<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token builtin\">int<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        n <span class=\"token operator\">&#061;<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>nums<span class=\"token punctuation\">)<\/span><\/p>\n<p>        <span class=\"token keyword\">if<\/span> n <span class=\"token operator\">&lt;&#061;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">return<\/span> n<\/p>\n<p>        i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">2<\/span><\/p>\n<p>        <span class=\"token keyword\">for<\/span> j <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span> n<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            <span class=\"token keyword\">if<\/span> nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!&#061;<\/span> nums<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><br \/>\n                nums<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><br \/>\n                i <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token number\">1<\/span><\/p>\n<p>        <span class=\"token keyword\">return<\/span> i<\/p>\n<p>\u8fd9\u91cc&#xff1a;<\/p>\n<p>i \u2192 \u4e0b\u4e00\u4e2a\u53ef\u4ee5\u5199\u5165\u7684\u4f4d\u7f6e<\/p>\n<p>j \u2192 \u8d1f\u8d23\u626b\u63cf\u539f\u6570\u7ec4<\/p>\n<p>\u800c&#xff1a;<\/p>\n<p>nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!&#061;<\/span> nums<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span><\/p>\n<p>\u5176\u5b9e\u662f\u5728\u5224\u65ad&#xff1a;<\/p>\n<p>\u5f53\u524d\u6570\u5b57\u5982\u679c\u5199\u8fdb\u53bb&#xff0c;\u4f1a\u4e0d\u4f1a\u6210\u4e3a\u7b2c 3 \u4e2a&#xff1f;<\/p>\n<p>\u5982\u679c&#xff1a;<\/p>\n<p>\u4e0d\u7b49\u4e8e i &#8211; 2 \u4f4d\u7f6e\u7684\u6570\u5b57<\/p>\n<p>\u8bf4\u660e\u8fd8\u6ca1\u6709\u8d85\u8fc7\u5141\u8bb8\u7684\u4e24\u4e2a\u3002<\/p>\n<p>\u6240\u4ee5\u53ef\u4ee5\u5199\u5165\u3002<\/p>\n<hr \/>\n<h2>\u4e94\u3001\u628a 26 \u548c 80 \u653e\u5728\u4e00\u8d77\u770b<\/h2>\n<p>\u73b0\u5728\u518d\u56de\u5934\u770b\u4e24\u9053\u9898\u3002<\/p>\n<h3>LeetCode 26<\/h3>\n<p>\u8981\u6c42&#xff1a;<\/p>\n<p>\u6700\u591a\u4fdd\u7559 1 \u4e2a<\/p>\n<p>\u6240\u4ee5&#xff1a;<\/p>\n<p>i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">1<\/span><\/p>\n<p>\u5f53\u524d\u6570\u5b57\u8981\u4e0d\u8981\u4fdd\u7559&#xff0c;\u770b&#xff1a;<\/p>\n<p>nums<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><\/p>\n<p>\u4e5f\u5c31\u662f&#xff1a;<\/p>\n<p>\u5df2\u7ecf\u4fdd\u7559\u533a\u57df\u4e2d\u5f80\u524d\u7b2c 1 \u4e2a\u6570\u5b57\u3002<\/p>\n<p>\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token keyword\">if<\/span> nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!&#061;<\/span> nums<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><\/p>\n<hr \/>\n<h3>LeetCode 80<\/h3>\n<p>\u8981\u6c42&#xff1a;<\/p>\n<p>\u6700\u591a\u4fdd\u7559 2 \u4e2a<\/p>\n<p>\u6240\u4ee5&#xff1a;<\/p>\n<p>i <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">2<\/span><\/p>\n<p>\u5f53\u524d\u6570\u5b57\u8981\u4e0d\u8981\u4fdd\u7559&#xff0c;\u770b&#xff1a;<\/p>\n<p>nums<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span><\/p>\n<p>\u4e5f\u5c31\u662f&#xff1a;<\/p>\n<p>\u5df2\u7ecf\u4fdd\u7559\u533a\u57df\u4e2d\u5f80\u524d\u7b2c 2 \u4e2a\u6570\u5b57\u3002<\/p>\n<p>\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token keyword\">if<\/span> nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!&#061;<\/span> nums<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#8211;<\/span> <span class=\"token number\">2<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><\/p>\n<p>\u653e\u5728\u4e00\u8d77&#xff1a;<\/p>\n<p>\u6700\u591a\u4fdd\u7559 1 \u4e2a<br \/>\n\u2193<br \/>\n\u770b i &#8211; 1<\/p>\n<p>\u6700\u591a\u4fdd\u7559 2 \u4e2a<br \/>\n\u2193<br \/>\n\u770b i &#8211; 2<\/p>\n<p>\u5230\u8fd9\u91cc\u5176\u5b9e\u5df2\u7ecf\u5f88\u5bb9\u6613\u53d1\u73b0\u89c4\u5f8b\u4e86\u3002<\/p>\n<hr \/>\n<p>\u5982\u679c\u9898\u76ee\u53d8\u6210\u201c\u6700\u591a\u4fdd\u7559 k \u4e2a\u201d\u5462&#xff1f;<\/p>\n<p>\u5047\u8bbe\u9898\u76ee\u89c4\u5b9a&#xff1a;<\/p>\n<p>\u6bcf\u4e2a\u6570\u5b57\u6700\u591a\u53ef\u4ee5\u51fa\u73b0 k \u6b21<\/p>\n<p>\u90a3\u4e48\u524d&#xff1a;<\/p>\n<p>k \u4e2a\u5143\u7d20<\/p>\n<p>\u4e00\u5b9a\u53ef\u4ee5\u76f4\u63a5\u4fdd\u7559\u3002<\/p>\n<p>\u6240\u4ee5&#xff1a;<\/p>\n<p>i <span class=\"token operator\">&#061;<\/span> k<\/p>\n<p>\u7136\u540e\u5bf9\u4e8e\u540e\u9762\u7684&#xff1a;<\/p>\n<p>nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><\/p>\n<p>\u771f\u6b63\u9700\u8981\u5224\u65ad\u7684\u662f&#xff1a;<\/p>\n<p>\u5f53\u524d\u6570\u5b57\u5982\u679c\u518d\u5199\u8fdb\u53bb&#xff0c;\u4f1a\u4e0d\u4f1a\u6210\u4e3a\u7b2c k &#043; 1 \u4e2a&#xff1f;<\/p>\n<p>\u56e0\u6b64\u53ea\u9700\u8981\u770b&#xff1a;<\/p>\n<p>nums<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#8211;<\/span> k<span class=\"token punctuation\">]<\/span><\/p>\n<p>\u5982\u679c&#xff1a;<\/p>\n<p>nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;&#061;<\/span> nums<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#8211;<\/span> k<span class=\"token punctuation\">]<\/span><\/p>\n<p>\u8bf4\u660e&#xff1a;<\/p>\n<p>\u524d\u9762\u5df2\u7ecf\u4fdd\u7559\u4e86 k \u4e2a\u76f8\u540c\u6570\u5b57<\/p>\n<p>\u518d\u5199\u8fdb\u53bb\u5c31\u8d85\u51fa\u9650\u5236\u3002<\/p>\n<p>\u6240\u4ee5\u8df3\u8fc7\u3002<\/p>\n<p>\u53cd\u8fc7\u6765&#xff1a;<\/p>\n<p>nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!&#061;<\/span> nums<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#8211;<\/span> k<span class=\"token punctuation\">]<\/span><\/p>\n<p>\u8bf4\u660e\u5f53\u524d\u6570\u5b57\u8fd8\u6ca1\u6709\u8fbe\u5230 k \u4e2a\u3002<\/p>\n<p>\u53ef\u4ee5\u5199\u5165\u3002<\/p>\n<hr \/>\n<h3>\u901a\u7528\u7684 i &#8211; k \u6a21\u677f<\/h3>\n<p>\u4e8e\u662f\u53ef\u4ee5\u62bd\u8c61\u6210&#xff1a;<\/p>\n<p><span class=\"token keyword\">def<\/span> <span class=\"token function\">removeDuplicates<\/span><span class=\"token punctuation\">(<\/span>nums<span class=\"token punctuation\">,<\/span> k<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    n <span class=\"token operator\">&#061;<\/span> <span class=\"token builtin\">len<\/span><span class=\"token punctuation\">(<\/span>nums<span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token keyword\">if<\/span> n <span class=\"token operator\">&lt;&#061;<\/span> k<span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> n<\/p>\n<p>    i <span class=\"token operator\">&#061;<\/span> k<\/p>\n<p>    <span class=\"token keyword\">for<\/span> j <span class=\"token keyword\">in<\/span> <span class=\"token builtin\">range<\/span><span class=\"token punctuation\">(<\/span>k<span class=\"token punctuation\">,<\/span> n<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n        <span class=\"token keyword\">if<\/span> nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">!&#061;<\/span> nums<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#8211;<\/span> k<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">:<\/span><br \/>\n            nums<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> nums<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><br \/>\n            i <span class=\"token operator\">&#043;&#061;<\/span> <span class=\"token number\">1<\/span><\/p>\n<p>    <span class=\"token keyword\">return<\/span> i<\/p>\n<p>\u6574\u4e2a\u903b\u8f91\u5c31\u662f&#xff1a;<\/p>\n<p>\u524d k \u4e2a\u5143\u7d20 \u2192 \u76f4\u63a5\u4fdd\u7559<\/p>\n<p>\u540e\u9762\u7684\u6bcf\u4e2a nums[j]<br \/>\n\u2193<br \/>\n\u548c nums[i &#8211; k] \u6bd4\u8f83<\/p>\n<p>\u76f8\u540c<br \/>\n\u2192 \u5982\u679c\u653e\u8fdb\u53bb\u5c31\u4f1a\u8d85\u8fc7 k \u4e2a<br \/>\n\u2192 \u8df3\u8fc7<\/p>\n<p>\u4e0d\u540c<br \/>\n\u2192 \u8fd8\u6ca1\u6709\u8d85\u8fc7 k \u4e2a<br \/>\n\u2192 \u5199\u5230 nums[i]<br \/>\n\u2192 i &#043;&#061; 1<\/p>\n<hr \/>\n<h3>\u8fd9\u4e2a\u65b9\u6cd5\u6210\u7acb -&gt; \u6709\u5e8f\u662f\u5173\u952e<\/h3>\n<p>\u8fd9\u91cc\u8fd8\u6709\u4e00\u4e2a\u4e0d\u80fd\u5ffd\u7565\u7684\u524d\u63d0&#xff1a;<\/p>\n<p>\u6570\u7ec4\u662f\u6709\u5e8f\u7684<\/p>\n<p>\u4f8b\u5982&#xff1a;<\/p>\n<p>[1,1,1,2,2,3]<\/p>\n<p>\u76f8\u540c\u6570\u5b57\u90fd\u4f1a\u805a\u5728\u4e00\u8d77\u3002<\/p>\n<p>\u56e0\u6b64&#xff0c;\u5982\u679c&#xff1a;<\/p>\n<p>nums[j] &#061;&#061; nums[i &#8211; k]<\/p>\n<p>\u6211\u4eec\u5c31\u53ef\u4ee5\u786e\u5b9a&#xff1a;<\/p>\n<p>\u5728\u5df2\u7ecf\u4fdd\u7559\u7684\u533a\u57df\u91cc&#xff0c;\u5f53\u524d\u6570\u5b57\u5df2\u7ecf\u81f3\u5c11\u51fa\u73b0\u4e86 k \u6b21\u3002<\/p>\n<p>\u4f46\u5982\u679c\u6570\u7ec4\u662f\u4e71\u5e8f\u7684&#xff0c;\u4f8b\u5982&#xff1a;<\/p>\n<p>[1,2,1,3,1]<\/p>\n<p>\u76f8\u540c\u6570\u5b57\u6ca1\u6709\u8fde\u5728\u4e00\u8d77&#xff0c;<\/p>\n<p>\u90a3\u53ea\u901a\u8fc7&#xff1a;<\/p>\n<p>nums<span class=\"token punctuation\">[<\/span>i <span class=\"token operator\">&#8211;<\/span> k<span class=\"token punctuation\">]<\/span><\/p>\n<p>\u5c31\u65e0\u6cd5\u5224\u65ad\u5f53\u524d\u6570\u5b57\u5230\u5e95\u5df2\u7ecf\u51fa\u73b0\u4e86\u591a\u5c11\u6b21\u3002<\/p>\n<p>\u6240\u4ee5&#xff1a;<\/p>\n<p>i &#8211; k \u8fd9\u79cd\u5199\u6cd5\u80fd\u591f\u6210\u7acb&#xff0c;\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u57fa\u7840\u5c31\u662f\u6570\u7ec4\u5df2\u7ecf\u6709\u5e8f\u3002<\/p>\n<hr \/>\n<h2>\u516d\u3001\u65f6\u95f4\u590d\u6742\u5ea6\u548c\u7a7a\u95f4\u590d\u6742\u5ea6<\/h2>\n<p>\u65e0\u8bba\u662f LeetCode 26 \u8fd8\u662f LeetCode 80&#xff1a;j 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