{"id":1561,"date":"2023-06-27T13:54:14","date_gmt":"2023-06-27T05:54:14","guid":{"rendered":"https:\/\/xinchewhd.com.cn\/?p=1561"},"modified":"2023-06-27T13:54:14","modified_gmt":"2023-06-27T05:54:14","slug":"%e3%80%90%e7%ae%97%e6%b3%95%e9%a2%98%e8%a7%a3%e3%80%916-%e5%90%88%e5%b9%b6%e4%b8%a4%e4%b8%aa%e6%9c%89%e5%ba%8f%e6%95%b0%e7%bb%84","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%916-%e5%90%88%e5%b9%b6%e4%b8%a4%e4%b8%aa%e6%9c%89%e5%ba%8f%e6%95%b0%e7%bb%84\/","title":{"rendered":"\u3010\u7b97\u6cd5\u9898\u89e3\u30116.\u5408\u5e76\u4e24\u4e2a\u6709\u5e8f\u6570\u7ec4"},"content":{"rendered":"
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\u9898\u76ee<\/span><\/span><\/h2>\n

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\u7ed9\u4f60\u4e24\u4e2a\u6309 \u975e\u9012\u51cf\u987a\u5e8f \u6392\u5217\u7684\u6574\u6570\u6570\u7ec4 nums1<\/strong> \u548c nums2<\/strong>\uff0c\u53e6\u6709\u4e24\u4e2a\u6574\u6570 m<\/strong> \u548c n<\/strong> \uff0c\u5206\u522b\u8868\u793a nums1<\/strong> \u548c nums2<\/strong> \u4e2d\u7684\u5143\u7d20\u6570\u76ee\u3002<\/p>\n


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\u8bf7\u4f60 \u5408\u5e76 nums2<\/strong> \u5230 nums1<\/strong> \u4e2d\uff0c\u4f7f\u5408\u5e76\u540e\u7684\u6570\u7ec4\u540c\u6837\u6309 \u975e\u9012\u51cf\u987a\u5e8f \u6392\u5217\u3002<\/p>\n


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\u6ce8\u610f\uff1a<\/strong> \u6700\u7ec8\uff0c\u5408\u5e76\u540e\u6570\u7ec4\u4e0d\u5e94\u7531\u51fd\u6570\u8fd4\u56de\uff0c\u800c\u662f\u5b58\u50a8\u5728\u6570\u7ec4 nums1<\/strong> \u4e2d\u3002\u4e3a\u4e86\u5e94\u5bf9\u8fd9\u79cd\u60c5\u51b5\uff0cnums1<\/strong> \u7684\u521d\u59cb\u957f\u5ea6\u4e3a m + n<\/strong>\uff0c\u5176\u4e2d\u524d m<\/strong> \u4e2a\u5143\u7d20\u8868\u793a\u5e94\u5408\u5e76\u7684\u5143\u7d20\uff0c\u540e n <\/strong>\u4e2a\u5143\u7d20\u4e3a 0<\/strong> \uff0c\u5e94\u5ffd\u7565\u3002nums2 <\/strong>\u7684\u957f\u5ea6\u4e3a n <\/strong>\u3002<\/p>\n<\/section>\n<\/section>\n

https:\/\/leetcode.cn\/problems\/merge-sorted-array\/description\/<\/span><\/section>\n<\/blockquote>\n


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\u89e3\u6cd5\u4e00\uff1a\u53cc\u6307\u9488<\/span><\/span><\/h2>\n

\u89e3\u9898\u601d\u8def<\/span><\/p>\n

\u56e0\u4e3a nums1 \u548c nums2 \u5df2\u7ecf\u662f\u6392\u597d\u5e8f\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u53cc\u6307\u9488\uff0cindex1 \u6307\u5411 nums1\uff0cindex2 \u6307\u5411 nums2\u3002<\/span><\/p>\n

\u6bcf\u6b21\u9009 nums1[index1] \u548c nums2[index2] \u4e2d\u7684\u8f83\u5c0f\u503c\u653e\u5165\u7b54\u6848 ans[cur++]\uff0c\u7136\u540e\u5c06\u7528\u6389\u7684\u90a3\u4e2a\u6570\u7ec4\u7684\u6307\u9488\u5f80\u540e\u79fb\u52a8\u4e00\u4f4d\u3002<\/span><\/p>\n


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

\u56fe\u89e3<\/span><\/p>\n

\u4ee5 nums1 = [1,2,3,0,0,0], m = 3, nums2 = [2,5,6], n = 3 \u4e3a\u4f8b\uff0c\u8f93\u51fa\uff1a[1,2,2,3,5,6]\u3002<\/span><\/p>\n


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\u4ee3\u7801\u5b9e\u73b0<\/span><\/p>\n

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    class<\/span> Solution<\/span> {<\/span><\/code>    public<\/span> void<\/span> merge<\/span>(int<\/span>[] nums1, int<\/span> m, int<\/span>[] nums2, int<\/span> n<\/span>)<\/span> {<\/span><\/code>        int<\/span>[] ans = new<\/span> int<\/span>[m + n];<\/span><\/code>        int<\/span> cur = 0<\/span>;<\/span><\/code>        int<\/span> index1 = 0<\/span>;<\/span><\/code>        int<\/span> index2 = 0<\/span>;<\/span><\/code>        while<\/span>(index1 < m || index2 < n){<\/span><\/code>            if<\/span>(index2 >= n || index1 < m && nums1[index1] <= nums2[index2]){<\/span><\/code>                ans[cur++] = nums1[index1++];<\/span><\/code>            }else<\/span>{<\/span><\/code>                ans[cur++] = nums2[index2++];<\/span><\/code>            }<\/span><\/code>        }<\/span><\/code>        for<\/span>(int<\/span> i = 0<\/span>; i < m + n; i++){<\/span><\/code>            nums1[i] = ans[i];<\/span><\/code>        }<\/span><\/code>    }<\/span><\/code>}<\/span><\/code><\/pre>\n<\/section>\n

    <\/section>\n
    \u590d\u6742\u5ea6\u5206\u6790<\/span><\/p>\n
    \u65f6\u95f4\u590d\u6742\u5ea6O(m + n)<\/span><\/strong>: <\/span>while\u5faa\u73af\u5171\u6267\u884c m + n \u6b21\uff0cfor\u5faa\u73af\u540c\u6837\u6267\u884cm + n\u6b21\uff0c\u603b\u8ba1 2(m + n)\u6b21\u3002<\/span><\/p>\n
    \u7a7a\u95f4\u590d\u6742\u5ea6O(m + n)<\/span><\/strong>: <\/span>ans \u6570\u7ec4\u957f\u5ea6\u4e3a m + n, \u5176\u4ed6\u4e3a\u5e38\u6570\u3002<\/span><\/p>\n

    <\/section>\n
    \u89e3\u6cd5\u4e8c\uff1a\u9006\u5411\u53cc\u6307\u9488<\/span><\/h2>\n
    \u89e3\u9898\u601d\u8def<\/span><\/p>\n
    \u56e0\u4e3a nums1 \u7ed9\u5b9a\u7684\u957f\u5ea6\u662f m + n\uff0c\u5df2\u7ecf\u6ee1\u8db3\u5408\u5e76\u540e\u7684\u957f\u5ea6\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u76f4\u63a5\u7528\u5b83\u6765\u5b58\u50a8\u6700\u7ec8\u7684\u7b54\u6848\uff0c\u4f46\u662f\u6b63\u5411\u53cc\u6307\u9488\u5728\u4e0d\u4f7f\u7528\u989d\u5916\u7684\u5b58\u50a8\u7a7a\u95f4\u65f6\u65e0\u6cd5\u6ee1\u8db3\u65f6\u95f4\u590d\u6742\u5ea6\u4e3aO(m + n)\u3002\u53c8\u56e0\u4e3anums1\u7684\u540en\u4e2a\u4f4d\u7f6e\u90fd\u662f\u7a7a\u7f6e\u7684\uff0c\u53ef\u4ee5\u968f\u610f\u4fee\u6539\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u8003\u8651\u9006\u5411\u53cc\u6307\u9488\u7684\u65b9\u5f0f\uff0c\u9006\u5e8f\u53d6\u6700\u5927\u503c\u5e76\u9006\u5e8f\u653e\u5165nums1\u3002\u5f53\u9006\u5e8f\u7b2c k \u4e2a\u4f4d\u7f6e\u8ba1\u7b97\u5b8c\u6210\u540e\uff0cnums1 \u9006\u5e8f\u7684\u7b2c k + 1 \u4e2a\u4f4d\u7f6e\u8981\u4e48\u521a\u597d\u662f\u6b63\u786e\u7b54\u6848\u65e0\u9700\u4fee\u6539\uff0c\u8981\u4e48\u5df2\u7ecf\u8d4b\u503c\u7ed9\u8ba1\u7b97\u8fc7\u7684\u4f4d\u7f6e\u4e5f\u53ef\u4ee5\u76f4\u63a5\u4fee\u6539\u3002<\/span>
    <\/p>\n

    <\/p>\n
    \u56fe\u89e3<\/span><\/p>\n
    \u540c\u6837\u4ee5 nums1 = [1,2,3,0,0,0], m = 3, nums2 = [2,5,6], n = 3 \u4e3a\u4f8b\uff0c\u8f93\u51fa\uff1a[1,2,2,3,5,6]\u3002<\/span><\/p>\n

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

    <\/p>\n
    \u4ee3\u7801\u5b9e\u73b0<\/span><\/section>\n
    \n
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      class<\/span> Solution<\/span> {<\/span><\/code>    public<\/span> void<\/span> merge<\/span>(int<\/span>[] nums1, int<\/span> m, int<\/span>[] nums2, int<\/span> n<\/span>)<\/span> {<\/span><\/code>        int<\/span> index1 = m - 1<\/span>;<\/span><\/code>        int<\/span> index2 = n - 1<\/span>;<\/span><\/code>        int<\/span> cur = m + n -1<\/span>;<\/span><\/code>        while<\/span>(index1 >= 0<\/span> || index2 >= 0<\/span>){<\/span><\/code>            if<\/span>(index2 < 0<\/span> || index1 >= 0<\/span> && nums1[index1] >= nums2[index2]){<\/span><\/code>                nums1[cur--] = nums1[index1--];<\/span><\/code>            }else<\/span>{<\/span><\/code>                nums1[cur--] = nums2[index2--];<\/span><\/code>            }<\/span><\/code>        }<\/span><\/code>    }<\/span><\/code>}<\/span><\/code><\/pre>\n<\/section>\n

      <\/section>\n
      \u590d\u6742\u5ea6\u5206\u6790<\/span><\/p>\n
      \u65f6\u95f4\u590d\u6742\u5ea6O(m + n)<\/span><\/strong>: <\/span>while\u5faa\u73af\u5171\u6267\u884c m + n \u6b21\u3002<\/span><\/span><\/p>\n
      \u7a7a\u95f4\u590d\u6742\u5ea6O(1)<\/span><\/strong>: <\/span><\/span>\u5e38\u6570\u7a7a\u95f4\u590d\u6742\u5ea6<\/span>\u3002<\/span><\/span><\/span><\/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":"
      \u9898\u76ee \u7ed9\u4f60\u4e24\u4e2a\u6309 \u975e\u9012\u51cf\u987a\u5e8f \u6392\u5217\u7684\u6574\u6570\u6570\u7ec4 nums1 \u548c nums2\uff0c\u53e6\u6709\u4e24\u4e2a\u6574\u6570 m \u548c n  …<\/p>\n","protected":false},"author":1,"featured_media":1553,"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-1561","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\/20230528043641910-150x150.jpeg","content_first_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528043643773.png","post_medium_image_300":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528043641910-300x128.jpeg","post_thumbnail_image_624":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528043641910-1024x435.jpeg","post_frist_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528043643773.png","post_medium_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528043641910-300x128.jpeg","post_large_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528043641910-1024x435.jpeg","post_full_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528043641910.jpeg","post_all_images":[{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528043643773.png","id":"image0"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528043643773.png","id":"image1"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528043653645.png","id":"image2"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230528043653645.png","id":"image3"}],"videoAdId":"","listAd":"0","listAdId":"","listAdEvery":6,"total_comments":0,"category_name":"\u7b97\u6cd5","post_date":"2023-06-27","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":310,"next_post_id":2484,"next_post_title":"Java\u4e2d\u5c06 int[] \u6570\u7ec4 \u8f6c\u6362\u4e3a List\uff08ArrayList\uff09","previous_post_id":1489,"previous_post_title":"\u3010\u7b97\u6cd5\u9898\u89e3\u301114. \u6709\u6548\u7684\u62ec\u53f7","_links":{"self":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/1561","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=1561"}],"version-history":[{"count":0,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/1561\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/media\/1553"}],"wp:attachment":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/media?parent=1561"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/categories?post=1561"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/tags?post=1561"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}