{"id":2565,"date":"2022-04-01T21:57:17","date_gmt":"2022-04-01T13:57:17","guid":{"rendered":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=2565"},"modified":"2022-04-04T20:27:05","modified_gmt":"2022-04-04T12:27:05","slug":"%ef%bf%bc","status":"publish","type":"post","link":"https:\/\/www.zeroheart.xyz\/wordpress\/?p=2565","title":{"rendered":"\u7b97\u6cd5\u5165\u95e8\u7b2c\u516b\u5929"},"content":{"rendered":"\n

617. \u5408\u5e76\u4e8c\u53c9\u6811<\/a><\/p>\n\n\n\n

\u7b80\u5355\u7684\u5408\u5e76\u4e8c\u53c9\u6811\uff0c\u6211\u6ca1\u505a\u51fa\u6765\uff0c\u54c8\u54c8\u3002\u3002<\/p>\n\n\n\n

\/**
<\/em> *
<\/em> 617. \u5408\u5e76\u4e8c\u53c9\u6811
<\/em> \u7ed9\u4f60\u4e24\u68f5\u4e8c\u53c9\u6811\uff1a root1 \u548c root2 \u3002
<\/em>
<\/em> \u60f3\u8c61\u4e00\u4e0b\uff0c\u5f53\u4f60\u5c06\u5176\u4e2d\u4e00\u68f5\u8986\u76d6\u5230\u53e6\u4e00\u68f5\u4e4b\u4e0a\u65f6\uff0c\u4e24\u68f5\u6811\u4e0a\u7684\u4e00\u4e9b\u8282\u70b9\u5c06\u4f1a\u91cd\u53e0\uff08\u800c\u53e6\u4e00\u4e9b\u4e0d\u4f1a\uff09\u3002\u4f60\u9700\u8981\u5c06\u8fd9\u4e24\u68f5\u6811\u5408\u5e76\u6210\u4e00\u68f5\u65b0\u4e8c\u53c9\u6811\u3002\u5408\u5e76\u7684\u89c4\u5219\u662f\uff1a\u5982\u679c\u4e24\u4e2a\u8282\u70b9\u91cd\u53e0\uff0c\u90a3\u4e48\u5c06\u8fd9\u4e24\u4e2a\u8282\u70b9\u7684\u503c\u76f8\u52a0\u4f5c\u4e3a\u5408\u5e76\u540e\u8282\u70b9\u7684\u65b0\u503c\uff1b\u5426\u5219\uff0c\u4e0d\u4e3a null \u7684\u8282\u70b9\u5c06\u76f4\u63a5\u4f5c\u4e3a\u65b0\u4e8c\u53c9\u6811\u7684\u8282\u70b9\u3002
<\/em>
<\/em> \u8fd4\u56de\u5408\u5e76\u540e\u7684\u4e8c\u53c9\u6811\u3002
<\/em>
<\/em> \u6ce8\u610f: \u5408\u5e76\u8fc7\u7a0b\u5fc5\u987b\u4ece\u4e24\u4e2a\u6811\u7684\u6839\u8282\u70b9\u5f00\u59cb\u3002
<\/em>
<\/em>
<\/em>
<\/em> \u793a\u4f8b 1\uff1a
<\/em>
<\/em>
<\/em> \u8f93\u5165\uff1aroot1 = [1,3,2,5], root2 = [2,1,3,null,4,null,7]
<\/em> \u8f93\u51fa\uff1a[3,4,5,5,4,null,7]
<\/em> \u793a\u4f8b 2\uff1a
<\/em>
<\/em> \u8f93\u5165\uff1aroot1 = [1], root2 = [1,2]
<\/em> \u8f93\u51fa\uff1a[2,2]
<\/em>
<\/em>
<\/em> \u63d0\u793a\uff1a
<\/em>
<\/em> \u4e24\u68f5\u6811\u4e2d\u7684\u8282\u70b9\u6570\u76ee\u5728\u8303\u56f4 [0, 2000] \u5185
<\/em> -10^4 <= Node.val <= 10^4
<\/em>
<\/em>
<\/em> * <\/em>@author <\/em><\/strong>zeroheart
<\/em> *
<\/em> *\/
<\/em>public class Question617 {
   public TreeNode mergeTrees(TreeNode root1, TreeNode root2) {
      if(root1 == null) return root2;
      if(root2 == null) return root1;
      root1.val += root2.val;
      root1.left = mergeTrees(root1.left, root2.left);
      root1.right = mergeTrees(root1.right, root2.right);
      return root1;
   }

   public static void main(String[] args) {
   }

}<\/pre>\n\n\n\n
116. \u586b\u5145\u6bcf\u4e2a\u8282\u70b9\u7684\u4e0b\u4e00\u4e2a\u53f3\u4fa7\u8282\u70b9\u6307\u9488<\/a><\/p>\n\n\n\n
\u8fd9\u9898\u76ee\u770b\u7740\u7b80\u5355\uff0c\u5b9e\u9645\u8d39\u70b9\u8111\u5b50\u7684\uff0c\u539f\u7406\u5c31\u662f\u4e00\u5c42\u4e00\u5c42\u7684\u904d\u5386\uff0c\u8981\u5199\u51fa\u6765\u8fd8\u662f\u4e0d\u5bb9\u6613\u3002\u3002\u592a\u83dc\u4e86<\/p>\n\n\n\n

\/**
<\/em> *
<\/em> 116. \u586b\u5145\u6bcf\u4e2a\u8282\u70b9\u7684\u4e0b\u4e00\u4e2a\u53f3\u4fa7\u8282\u70b9\u6307\u9488
<\/em> \u7ed9\u5b9a\u4e00\u4e2a \u5b8c\u7f8e\u4e8c\u53c9\u6811 \uff0c\u5176\u6240\u6709\u53f6\u5b50\u8282\u70b9\u90fd\u5728\u540c\u4e00\u5c42\uff0c\u6bcf\u4e2a\u7236\u8282\u70b9\u90fd\u6709\u4e24\u4e2a\u5b50\u8282\u70b9\u3002\u4e8c\u53c9\u6811\u5b9a\u4e49\u5982\u4e0b\uff1a
<\/em>
<\/em> struct Node {
<\/em> int val;
<\/em> Node *left;
<\/em> Node *right;
<\/em> Node *next;
<\/em> }
<\/em> \u586b\u5145\u5b83\u7684\u6bcf\u4e2a next \u6307\u9488\uff0c\u8ba9\u8fd9\u4e2a\u6307\u9488\u6307\u5411\u5176\u4e0b\u4e00\u4e2a\u53f3\u4fa7\u8282\u70b9\u3002\u5982\u679c\u627e\u4e0d\u5230\u4e0b\u4e00\u4e2a\u53f3\u4fa7\u8282\u70b9\uff0c\u5219\u5c06 next \u6307\u9488\u8bbe\u7f6e\u4e3a NULL\u3002
<\/em>
<\/em> \u521d\u59cb\u72b6\u6001\u4e0b\uff0c\u6240\u6709 next \u6307\u9488\u90fd\u88ab\u8bbe\u7f6e\u4e3a NULL\u3002
<\/em>
<\/em>
<\/em>
<\/em> \u793a\u4f8b 1\uff1a
<\/em>
<\/em>
<\/em>
<\/em> \u8f93\u5165\uff1aroot = [1,2,3,4,5,6,7]
<\/em> \u8f93\u51fa\uff1a[1,#,2,3,#,4,5,6,7,#]
<\/em> \u89e3\u91ca\uff1a\u7ed9\u5b9a\u4e8c\u53c9\u6811\u5982\u56fe A \u6240\u793a\uff0c\u4f60\u7684\u51fd\u6570\u5e94\u8be5\u586b\u5145\u5b83\u7684\u6bcf\u4e2a next \u6307\u9488\uff0c\u4ee5\u6307\u5411\u5176\u4e0b\u4e00\u4e2a\u53f3\u4fa7\u8282\u70b9\uff0c\u5982\u56fe B \u6240\u793a\u3002\u5e8f\u5217\u5316\u7684\u8f93\u51fa\u6309\u5c42\u5e8f\u904d\u5386\u6392\u5217\uff0c\u540c\u4e00\u5c42\u8282\u70b9\u7531 next \u6307\u9488\u8fde\u63a5\uff0c'#' \u6807\u5fd7\u7740\u6bcf\u4e00\u5c42\u7684\u7ed3\u675f\u3002
<\/em> \u793a\u4f8b 2:
<\/em>
<\/em> \u8f93\u5165\uff1aroot = []
<\/em> \u8f93\u51fa\uff1a[]
<\/em>
<\/em>
<\/em> \u63d0\u793a\uff1a
<\/em>
<\/em> \u6811\u4e2d\u8282\u70b9\u7684\u6570\u91cf\u5728 [0, 212 - 1] \u8303\u56f4\u5185
<\/em> -1000 <= node.val <= 1000
<\/em>
<\/em> * <\/em>@author <\/em><\/strong>zeroheart
<\/em> *
<\/em> *\/
<\/em>public class Question116 {
   public Node connect(Node root) {
      if(root == null) return root;
      Node leftMost = root;
      while (leftMost.left!=null){
         Node head = leftMost;
         while (head!=null){
            \/\/ \u8fdb\u6765\uff0c\u76f4\u63a5\u8fde\u5de6\u8fb9\u548c\u53f3\u8fb9
            head.left.next = head.right;
            \/\/ root\u6765\u8bf4\uff0c\u8fd9\u91cc\u662f\u7a7a\u7684
            if (head.next != null) {
               head.right.next = head.next.left;
            }
            head = head.next; \/\/ \u5bf9\u4e8eroot\uff0c\u8df3\u5230\u4e0b\u4e00\u6b21\uff0c\u5176\u4ed6\u7684\u5f80\u540e\u79fb\u4e00\u4e2a
         }
         leftMost = leftMost.left;  \/\/ \u4e0b\u4e00\u5c42\uff0c\u6700\u5de6\u8fb9
      }
      return root;
   }

   public static void main(String[] args) {
   }

}<\/pre>\n","protected":false},"excerpt":{"rendered":"
617. \u5408\u5e76\u4e8c\u53c9\u6811 \u7b80\u5355\u7684\u5408\u5e76\u4e8c\u53c9\u6811\uff0c\u6211\u6ca1\u505a\u51fa\u6765\uff0c\u54c8\u54c8\u3002\u3002 \/** * 617. \u5408\u5e76\u4e8c\u53c9\u6811 \u7ed9\u4f60\u4e24\u68f5\u4e8c\u53c9\u6811 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[155],"tags":[170],"_links":{"self":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2565"}],"collection":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2565"}],"version-history":[{"count":11,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2565\/revisions"}],"predecessor-version":[{"id":2587,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/2565\/revisions\/2587"}],"wp:attachment":[{"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2565"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2565"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zeroheart.xyz\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2565"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}