\u5c0f Valentine \u975e\u5e38\u559c\u6b61 2 \u5143\u6a39\uff0c\u5979\u5e38\u5e38\u96a8\u610f\u7684\u4ee5\u5927\u5beb\u82f1\u6587\u5b57\u6bcd\u4f86\u5efa\u69cb 2 \u5143\u6a39\u3002\u4ee5\u4e0b\u5c31\u662f\u5176\u4e2d\u4e4b\u4e00\uff1a<\/p>\n\n\n\n
D
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F<\/p>\n\n\n\n
\u70ba\u4e86\u628a\u9019 2 \u5143\u6a39\u4fdd\u7559\u8d77\u4f86\uff0c\u5c0d\u6bcf\u4e00 2 \u5143\u6a39\u5979\u5beb\u4e0b 2 \u7a2e\u5b57\u4e32\u3002\u524d\u5e8f\u641c\u5c0b preorder traversal\uff08\u6a39\u6839\uff0c\u5de6\u5b50\u6a39\uff0c\u53f3\u5b50\u6a39\uff09\u548c\u4e2d\u5e8f\u641c\u5c0b\uff08\u5de6\u5b50\u6a39\uff0c\u6a39\u6839\uff0c\u53f3\u5b50\u6a39\uff09\u3002\u6240\u4ee5\u4e0a\u9762\u90a3\u68f5 2 \u5143\u6a39\uff0c\u5979\u5206\u5225\u5beb\u4e0b\u4e86\u524d\u5e8f\u641c\u5c0b\u5b57\u4e32\uff1a DBACEGF<\/strong> \u548c\u4e2d\u5e8f\u641c\u5c0b\u5b57\u4e32\uff1a ABCDEFG<\/strong>\u3002<\/p>\n\n\n\n \u73fe\u5728\u4f60\u7684\u4efb\u52d9\u5c31\u662f\u8981\u628a\u5c0f Valentine \u7576\u5e74\u5beb\u7684\u9019\u4e9b\u5b57\u4e32\u9084\u539f\u6210\u539f\u4f86\u7684 2 \u5143\u6a39\uff0c\u4e26\u4e14\u4ee5\u5f8c\u7e8c\u641c\u5c0b postorder traversal\uff08\u5de6\u5b50\u6a39\uff0c\u53f3\u5b50\u6578\uff0c\u6a39\u6839\uff09\u7684\u65b9\u5f0f\u5217\u5370\u51fa\u4f86\u3002<\/p>\n\n\n\n \u524d\u5e8f\u7684\u9806\u5e8f\u662f\uff1a\u6839\u3001\u5de6\u3001\u53f3<\/p>\n\n\n\n \u4e2d\u5e8f\u7684\u9806\u5e8f\u662f\uff1a\u5de6\u3001\u6839\u3001\u53f3<\/p>\n\n\n\n \u4f7f\u7528\u905e\u8ff4\u7684\u65b9\u5f0f\uff0c\u5c07\u6bcf\u6b21\u7684\u6839\u8a2d\u7f6e\u70ba\u524d\u5e8f\u5b57\u4e32\u7684\u7b2c\u4e00\u500b\u5b57\u5143\uff0c\u4e26\u4e14\u5728\u4e2d\u5e8f\u5b57\u4e32\u4e2d\u4f7f\u7528 For\u8ff4\u5708 \u5c0b\u627e\u6839\uff0c\u627e\u5230\u4e4b\u5f8c\u8981\u518d\u6b21\u547c\u53eb\u51fd\u5f0f\uff0c\u5206\u5225\u662f\u5de6\u908a\u548c\u53f3\u908a\u3002<\/p>\n\n\n\n \u5de6\u908a\uff1a\u5c07\u524d\u5e8f\u7684\u5b57\u4e32\u5f9e\u4f4d\u7f6e 1 \u5f80\u53f3\u908a\u5207 i \u500b\u5b57\u5143\uff0c\u4ee3\u8868\u9019\u5c31\u662f\u5de6\u908a\u7684\u8cc7\u6599\u3002\u5c07\u4e2d\u5e8f\u5f9e 0 \u5f80\u53f3\u5207 i \u500b\u5b57\u5143\u3002\u5982\u679c\u6839\u5728\u7b2c 0 \u500b\u4f4d\u7f6e\u5247\u4e0d\u7528\u547c\u53eb\u5de6\u908a\u7684\u51fd\u5f0f\u4e86\u3002<\/p>\n\n\n\n \u53f3\u908a\uff1a\u5c07\u524d\u5e8f\u7684\u5b57\u4e32\u5f9e\u4f4d\u7f6e i+1 \u5f80\u53f3\u908a\u5207 \u524d\u5e8f.length()-i-1 \u500b\u5b57\u5143\u3002\u5c07\u4e2d\u5e8f\u5f9e\u4f4d\u7f6e i+1 \u5f80\u53f3\u908a\u5207 \u524d\u5e8f.length()-i-1 \u500b\u5b57\u5143\u3002\u5982\u679c\u6839\u4e0d\u5728\u4e2d\u5e8f\u7684\u6700\u5f8c\u4e00\u500b\u4f4d\u7f6e\uff0c\u5247\u4e0d\u7528\u547c\u53eb\u3002<\/p>\n\n\n\n \u6bcf\u6b21\u51fd\u5f0f\u547c\u53eb\u5b8c\u5de6\u53f3\u908a\u4e4b\u5f8c\u90fd\u8981\u8f38\u51fa\u9019\u6b21\u7684\u6839\u3002<\/p>\n\n\n\n \u540c\u984c\uff1aUVa 00536 – Tree Recovery \u5c0f Valentine \u975e\u5e38\u559c\u6b61 2 \u5143 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[18],"tags":[53,11,9,28],"class_list":["post-1293","post","type-post","status-publish","format-standard","hentry","category-uva","tag-53","tag-11","tag-9","tag-28"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/1293","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/comments?post=1293"}],"version-history":[{"count":3,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/1293\/revisions"}],"predecessor-version":[{"id":1296,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/posts\/1293\/revisions\/1296"}],"wp:attachment":[{"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/media?parent=1293"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/categories?post=1293"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seanxd.com\/zh\/wp-json\/wp\/v2\/tags?post=1293"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\u7bc4\u4f8b\u6e2c\u8cc7<\/h2>\n\n\n\n
\u7bc4\u4f8b\u8f38\u5165<\/th> \u7bc4\u4f8b\u8f38\u51fa<\/th><\/tr><\/thead> EOF \u8f38\u5165\uff0c\u6bcf\u7b46\u6e2c\u8a66\u8cc7\u6599\u4e00\u5217\u3002\u6bcf\u5217\u6709 2 \u500b\u5b57\u4e32\uff0c\u5206\u5225\u4ee3\u8868\u67d0\u4e00\u68f5 2 \u5143\u6a39\u7684\u524d\u5e8f\u53ca\u4e2d\u5e8f\u641c\u5c0b\u7d50\u679c\u30022 \u500b\u5b57\u4e32\u90fd\u53ea\u5305\u542b\u5927\u5beb\u82f1\u6587\u5b57\u6bcd\uff0c\u800c\u4e14\u4e0d\u6703\u6709\u91cd\u8907\u7684\u5b57\u6bcd\u51fa\u73fe\u3002\u6240\u4ee5\u6700\u5927\u9577\u5ea6\u90fd\u4e0d\u6703\u8d85\u904e 26\u3002<\/td> \u5c0d\u6bcf\u4e00\u5217\u8f38\u5165\uff0c\u8acb\u8f38\u51fa\u8a72 2 \u5143\u6a39\u4ee5\u5f8c\u5e8f\u641c\u5c0b\u7684\u7d50\u679c\u3002<\/td><\/tr> DBACEGF ABCDEFG
BCAD CBAD<\/td>ACBFGED
CDAB<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n\u89e3\u984c\u601d\u8def<\/h2>\n\n\n\n
\u7bc4\u4f8b\u7a0b\u5f0f\u78bc\uff0dZeroJudge C126: Tree Recovery<\/a><\/h3>\n\n\n\n
#include <iostream>\nusing namespace std;\n\nvoid find(const string front, const string middle) {\n const char root = front[0];\n for (int i = 0; i<middle.length(); i++) {\n if (middle[i] == root) {\n if (i != 0) {\n find(front.substr(1, i), middle.substr(0, i));\n }\n if (i != middle.length() - 1) {\n find(front.substr(i+1, front.length()-i-1), middle.substr(i+1, front.length()-i-1));\n }\n cout << root;\n }\n }\n}\n\nint main() {\n cin.sync_with_stdio(0);\n cin.tie(0);\n string front, middle;\n while (cin >> front >> middle) {\n find (front, middle);\n cout << "\\n";\n }\n}\n\n\/\/ZeroJudge C126\n\/\/Dr. SeanXD<\/code><\/pre><\/div>\n","protected":false},"excerpt":{"rendered":"