{"id":1648,"date":"2023-06-19T18:07:43","date_gmt":"2023-06-19T10:07:43","guid":{"rendered":"https:\/\/xinchewhd.com.cn\/?p=1648"},"modified":"2023-06-19T18:07:43","modified_gmt":"2023-06-19T10:07:43","slug":"%e3%80%90%e7%ae%97%e6%b3%95%e9%a2%98%e8%a7%a3%e3%80%9137-powx-n","status":"publish","type":"post","link":"https:\/\/xinchewhd.com.cn\/index.php\/%e7%ae%97%e6%b3%95\/%e3%80%90%e7%ae%97%e6%b3%95%e9%a2%98%e8%a7%a3%e3%80%9137-powx-n\/","title":{"rendered":"\u3010\u7b97\u6cd5\u9898\u89e3\u301137. Pow(x, n)"},"content":{"rendered":"
\n
\n

\u275d<\/span><\/p>\n

\u8fd9\u662f\u4e00\u9053 \u300c\u4e2d\u7b49\u96be\u5ea6\u300d<\/strong> \u7684\u9898
https:\/\/leetcode.cn\/problems\/powx-n\/<\/p>\n

\u275e<\/span><\/p><\/blockquote>\n

<\/span>\u9898\u76ee<\/span><\/span><\/h2>\n

\u5b9e\u73b0 <\/path><\/g><\/path><\/g><\/path><\/g><\/path><\/g><\/path><\/g><\/path><\/g><\/path><\/g><\/path><\/g><\/g><\/g><\/svg><\/span><\/span> \uff0c\u5373\u8ba1\u7b97 x<\/code> \u7684\u6574\u6570 n<\/code> \u6b21\u5e42\u51fd\u6570\uff08\u5373\uff0c<\/path><\/g><\/path><\/g><\/g><\/g><\/g><\/svg><\/span><\/span>\uff09\u3002<\/p>\n

\u793a\u4f8b 1\uff1a<\/strong><\/p>\n

<\/span>func<\/span> myPow<\/span>(x float64<\/span>, n int<\/span>)<\/span> float64<\/span><\/span> {
    \/\/ \u8fb9\u754c\u6761\u4ef6<\/span>
    if<\/span> n == 0<\/span> {
        return<\/span> 1<\/span>
    }

    if<\/span> n < 0<\/span> {
        if<\/span> n == -(1<\/span> << 31<\/span>) {
            return<\/span> myPow(x, n + 1<\/span>) \/ x
        }
        return<\/span> myPow(1<\/span> \/ x, -n)
    }

    temp := myPow(x, n \/ 2<\/span>)

    ans := temp * temp
    if<\/span> n % 2<\/span> == 1<\/span> {
        ans = ans * x
    }

    return<\/span> ans

}
<\/code><\/pre>\n
<\/span><\/span>\u590d\u6742\u5ea6\u5206\u6790<\/span><\/span><\/h4>\n
    \n
  • \n
    \u65f6\u95f4\u590d\u6742\u5ea6\uff1a<\/strong><\/path><\/g><\/path><\/g><\/path><\/g><\/path><\/g><\/path><\/g><\/path><\/g><\/g><\/path><\/g><\/path><\/g><\/g><\/g><\/svg><\/span><\/span>\u3002<\/section>\n<\/li>\n
  • \n
    \u7a7a\u95f4\u590d\u6742\u5ea6\uff1a<\/strong><\/path><\/g><\/path><\/g><\/path><\/g><\/path><\/g><\/path><\/g><\/path><\/g><\/g><\/path><\/g><\/path><\/g><\/g><\/g><\/svg><\/span><\/span>\u3002<\/section>\n<\/li>\n<\/ul>\n

    <\/section>\n
    \n

    <\/span><\/p>\n
    - End -<\/span><\/p>\n<\/section>\n

    <\/p>\n
    <\/mp-common-profile><\/section>\n

    <\/section>\n<\/section>\n

    <\/p>\n
    <\/mp-style-type><\/p>\n
    \n
    \u672c\u7bc7\u6587\u7ae0\u6765\u6e90\u4e8e\u5fae\u4fe1\u516c\u4f17\u53f7:                 i\u4f59\u6570              <\/p>\n<\/blockquote>\n<\/div>\n","raw":"","protected":false},"excerpt":{"rendered":"
    \u275d \u8fd9\u662f\u4e00\u9053 \u300c\u4e2d\u7b49\u96be\u5ea6\u300d \u7684\u9898https:\/\/leetcode.cn\/problems\/powx-n\/ \u275e \u9898\u76ee \u5b9e\u73b0 \uff0c\u5373\u8ba1\u7b97 …<\/p>\n","protected":false},"author":1,"featured_media":1646,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"emotion":"","emotion_color":"","title_style":"","license":"","footnotes":""},"categories":[22],"tags":[],"class_list":["post-1648","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-22"],"post_thumbnail_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528044036345-150x150.jpeg","content_first_image":null,"post_medium_image_300":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528044036345-300x128.jpeg","post_thumbnail_image_624":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528044036345.jpeg","post_frist_image":null,"post_medium_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528044036345-300x128.jpeg","post_large_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528044036345.jpeg","post_full_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528044036345.jpeg","post_all_images":[],"videoAdId":"","listAd":"0","listAdId":"","listAdEvery":6,"total_comments":0,"category_name":"\u7b97\u6cd5","post_date":"2023-06-19","like_count":"0","praiseWord":"\u9f13\u52b1","copyright_state":"","excitationAd":"0","rewardedVideoAdId":"","detailAdId":"","detailAd":"0","enterpriseMinapp":"0","audios":[],"postImageUrl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230519082947553.jpg","avatarurls":[],"related_posts":null,"pageviews":346,"next_post_id":1601,"next_post_title":"\u3010\u7b97\u6cd5\u9898\u89e3\u301130. \u5168\u6392\u5217\u7684\u9012\u5f52\u89e3\u6cd5","previous_post_id":1528,"previous_post_title":"\u3010\u7b97\u6cd5\u30112. \u5224\u65ad\u4e00\u4e2a\u6574\u6570\u662f\u5426\u662f 2 \u7684\u5e42\u6b21\u65b9","_links":{"self":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/1648","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/comments?post=1648"}],"version-history":[{"count":0,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/1648\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/media\/1646"}],"wp:attachment":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1648"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1648"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1648"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}