{"id":54878,"date":"2025-08-13T12:29:37","date_gmt":"2025-08-13T04:29:37","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/54878.html"},"modified":"2025-08-13T12:29:37","modified_gmt":"2025-08-13T04:29:37","slug":"leetcode-%e6%af%8f%e6%97%a5%e4%b8%80%e9%a2%98-326-3-%e7%9a%84%e5%b9%82-%e6%95%b0%e5%ad%a6","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/54878.html","title":{"rendered":"(LeetCode \u6bcf\u65e5\u4e00\u9898) 326. 3 \u7684\u5e42 (\u6570\u5b66)"},"content":{"rendered":"<h3>\u9898\u76ee&#xff1a;326. 3 \u7684\u5e42<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813042935-689c14af96ec1.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<p>\u601d\u8def&#xff1a;\u5728n\u7684\u8303\u56f4\u5185\u627e\u5230\u6700\u5927\u7684 3\u7684\u5e42&#xff0c;\u5047\u8bbe\u4e3at&#xff0c;\u90a3\u4e48\u5176\u4ed63\u7684\u5e42\u4e00\u5b9a\u53ef\u4ee5\u6574\u9664t\u3002\u53ef\u4ee5\u9884\u5904\u7406\u51fa\u6765\u627e\u51fat&#xff0c;\u8fd9\u6837\u540e\u97620(1)\u5c31\u80fd\u5224\u65ad\u4e86\u3002<\/p>\n<p>C&#043;&#043;\u7248\u672c&#xff1a;<\/p>\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\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">int<\/span> <span class=\"token function\">solve<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">long<\/span> s<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">long<\/span> mx<span class=\"token operator\">&#061;<\/span><span class=\"token function\">pow<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">31<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>s<span class=\"token operator\">*<\/span><span class=\"token number\">3<\/span><span class=\"token operator\">&lt;<\/span>mx<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n            s<span class=\"token operator\">*&#061;<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">)<\/span>s<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">bool<\/span> <span class=\"token function\">isPowerOfThree<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> n<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">int<\/span> t<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1162261467<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/int t&#061;solve();<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> n<span class=\"token operator\">&gt;<\/span><span class=\"token number\">0<\/span> <span class=\"token operator\">&amp;&amp;<\/span> t<span class=\"token operator\">%<\/span>n<span class=\"token operator\">&#061;&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>JAVA\u7248\u672c&#xff1a;<\/p>\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\">int<\/span> <span class=\"token function\">solve<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">long<\/span> s<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">long<\/span> mx<span class=\"token operator\">&#061;<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">long<\/span><span class=\"token punctuation\">)<\/span><span class=\"token class-name\">Math<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">pow<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">31<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token keyword\">while<\/span><span class=\"token punctuation\">(<\/span>s<span class=\"token operator\">*<\/span><span class=\"token number\">3<\/span><span class=\"token operator\">&lt;<\/span>mx<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{<\/span><br \/>\n            s<span class=\"token operator\">*&#061;<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token punctuation\">}<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">)<\/span>s<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">boolean<\/span> <span class=\"token function\">isPowerOfThree<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> n<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        <span class=\"token keyword\">int<\/span> t<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1162261467<\/span><span class=\"token punctuation\">;<\/span><br \/>\n        <span class=\"token comment\">\/\/int t&#061;solve();<\/span><br \/>\n        <span class=\"token keyword\">return<\/span> n<span class=\"token operator\">&gt;<\/span><span class=\"token number\">0<\/span> <span class=\"token operator\">&amp;&amp;<\/span> t<span class=\"token operator\">%<\/span>n<span class=\"token operator\">&#061;&#061;<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>GO\u7248\u672c&#xff1a;<\/p>\n<p><span class=\"token keyword\">func<\/span> <span class=\"token function\">isPowerOfThree<\/span><span class=\"token punctuation\">(<\/span>n <span class=\"token builtin\">int<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token builtin\">bool<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ t:&#061;solve()<\/span><br \/>\n    t<span class=\"token operator\">:&#061;<\/span><span class=\"token number\">1162261467<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> n<span class=\"token operator\">&gt;<\/span><span class=\"token number\">0<\/span> <span class=\"token operator\">&amp;&amp;<\/span> t<span class=\"token operator\">%<\/span>n<span class=\"token operator\">&#061;&#061;<\/span><span class=\"token number\">0<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">func<\/span> <span class=\"token function\">solve<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token builtin\">int<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">var<\/span> s <span class=\"token builtin\">int64<\/span> <span class=\"token operator\">&#061;<\/span><span class=\"token number\">1<\/span><br \/>\n    mx<span class=\"token operator\">:&#061;<\/span><span class=\"token function\">int64<\/span><span class=\"token punctuation\">(<\/span>math<span class=\"token punctuation\">.<\/span><span class=\"token function\">Pow<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">31<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token operator\">&#8211;<\/span><span class=\"token number\">1<\/span><br \/>\n    <span class=\"token keyword\">for<\/span> s<span class=\"token operator\">*<\/span><span class=\"token number\">3<\/span><span class=\"token operator\">&lt;<\/span>mx <span class=\"token punctuation\">{<\/span><br \/>\n        s<span class=\"token operator\">&#061;<\/span>s<span class=\"token operator\">*<\/span><span class=\"token number\">3<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token function\">int<\/span><span class=\"token punctuation\">(<\/span>s<span class=\"token punctuation\">)<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb83\u6b21\u3002\u3010\u4ee3\u7801\u3011(LeetCode \u6bcf\u65e5\u4e00\u9898) 326. 3 \u7684\u5e42 (\u6570\u5b66)<\/p>\n","protected":false},"author":2,"featured_media":54877,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[55,745,5239,99,2692,427,925],"topic":[],"class_list":{"0":"post-54878","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","6":"hentry","7":"category-server","8":"tag-c","9":"tag-go","11":"tag-java","12":"tag-leetcode","13":"tag-427","14":"tag-925"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - 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