{"id":1581,"date":"2026-05-19T15:47:02","date_gmt":"2026-05-19T07:47:02","guid":{"rendered":"http:\/\/wordpress.fangt.online\/?p=1581"},"modified":"2026-05-19T15:47:02","modified_gmt":"2026-05-19T07:47:02","slug":"%e9%ab%98%e7%b2%be%e5%ba%a6%e5%87%8f%e6%b3%95","status":"publish","type":"post","link":"http:\/\/wordpress.fangt.online\/index.php\/2026\/05\/19\/%e9%ab%98%e7%b2%be%e5%ba%a6%e5%87%8f%e6%b3%95\/","title":{"rendered":"\u9ad8\u7cbe\u5ea6\u51cf\u6cd5"},"content":{"rendered":"\n

\u9ad8\u7cbe\u5ea6\u51cf\u6cd5\u4e0e\u52a0\u6cd5\u7c7b\u4f3c\uff0c\u6a21\u62df\u624b\u7b97\u7ad6\u5f0f\u51cf\u6cd5\u7684\u8fc7\u7a0b\uff0c\u6838\u5fc3\u662f\u501f\u4f4d\uff08borrow\uff09<\/strong>\u7684\u5904\u7406\u3002\u4ee5\u53ca\u5c0f\u51cf\u5927<\/strong>\u7684\u5904\u7406\u3002<\/p>\n\n\n\n

\u57fa\u672c\u539f\u7406<\/h3>\n\n\n\n

\u8ba1\u7b97 A - B<\/code>\uff08\u5047\u8bbe A \u2265 B<\/code>\uff0c\u907f\u514d\u51fa\u73b0\u8d1f\u6570\uff09\uff1a<\/p>\n\n\n\n

    \n
  1. \u4ece\u6700\u4f4e\u4f4d\uff08\u6570\u7ec4\u4e0b\u68070\uff09\u5f00\u59cb\uff0c\u9010\u4f4d\u76f8\u51cf\u3002<\/li>\n\n\n\n
  2. \u5982\u679c\u5f53\u524d\u4f4d\u00a0A[i] - borrow - B[i]<\/code>\u00a0\u5c0f\u4e8e 0\uff0c\u5c31\u9700\u8981\u5411\u9ad8\u4f4d\u501f 1\uff0c\u5f53\u524d\u4f4d\u52a0 10\uff0c\u5e76\u6807\u8bb0\u501f\u4f4d\u00a0borrow = 1<\/code>\uff1b\u5426\u5219\u501f\u4f4d\u4e3a 0\u3002<\/li>\n\n\n\n
  3. \u7ee7\u7eed\u4e0b\u4e00\u4f4d\uff0c\u76f4\u5230\u6240\u6709\u4f4d\u5904\u7406\u5b8c\u3002<\/li>\n\n\n\n
  4. \u6700\u540e\u53bb\u9664\u7ed3\u679c\u6570\u7ec4\u524d\u7aef\u591a\u4f59\u7684\u96f6\uff08\u524d\u5bfc\u96f6\uff09\u3002<\/li>\n<\/ol>\n\n\n\n

    \u5224\u65ad A \u2265 B<\/h3>\n\n\n\n
      \n
    • \u5148\u6bd4\u8f83\u957f\u5ea6\uff1a\u4f4d\u6570\u591a\u7684\u6570\u66f4\u5927\u3002<\/li>\n\n\n\n
    • \u957f\u5ea6\u76f8\u540c\uff0c\u4ece\u6700\u9ad8\u4f4d\uff08\u6570\u7ec4\u5c3e\u90e8\uff09\u5f80\u4f4e\u4f4d\u6bd4\u8f83\uff0c\u9047\u5230\u7b2c\u4e00\u4e2a\u4e0d\u76f8\u7b49\u7684\u4f4d\uff0c\u8c01\u7684\u6570\u5b57\u5927\u8c01\u5c31\u5927\u3002<\/li>\n\n\n\n
    • \u5168\u90e8\u76f8\u7b49\u5219\u4e24\u6570\u76f8\u7b49\u3002<\/li>\n<\/ul>\n\n\n\n

      vector\u6bd4\u8f83\u6570\u636e\u5927\u5c0f<\/h4>\n\n\n\n
      \/\/ \u6bd4\u8f83\u4e24\u4e2a\u5c0f\u7aef\u5e8f\u5927\u6570\uff1a\u8fd4\u56de true \u5f53\u4e14\u4ec5\u5f53 a >= b\nbool greaterOrEqual(const vector<int>& a, const vector<int>& b) {\n    if (a.size() != b.size()) return a.size() > b.size();\n    for (int i = a.size() - 1; i >= 0; --i) {\n        if (a[i] != b[i]) return a[i] > b[i];\n    }\n    return true; \/\/ \u76f8\u7b49\n}<\/code><\/pre>\n\n\n\n
      string\u6bd4\u8f83\u6570\u636e\u5927\u5c0f(\u6ce8\u610f\u524d\u5bfc\u96f6)<\/h4>\n\n\n\n
      \/\/ \u6bd4\u8f83\u4e24\u4e2a\u5b57\u7b26\u4e32\u5927\u6570\uff1a\u8fd4\u56de true \u5f53\u4e14\u4ec5\u5f53 a >= b\nbool greaterOrEqual(const string& a, const string& b) {\n    if (a.size() != b.size()) return a.size() > b.size();\n    return a > b;\n}<\/code><\/pre>\n\n\n\n
      \u4ee3\u7801\u5b9e\u73b0<\/h3>\n\n\n\n
      #include <iostream>\n#include <vector>\n#include <string>\nusing namespace std;\n\n\/\/ \u5b57\u7b26\u4e32 \u2192 \u5c0f\u7aef\u5e8f vector\nvector<int> strToVec(const string& s) {\n    vector<int> v;\n    for (int i = s.size() - 1; i >= 0; --i)\n        v.push_back(s[i] - '0');\n    return v;\n}\n\n\/\/ \u6bd4\u8f83\u4e24\u4e2a\u5c0f\u7aef\u5e8f\u5927\u6570\uff1a\u8fd4\u56de true \u5f53\u4e14\u4ec5\u5f53 a >= b\nbool greaterOrEqual(const vector<int>& a, const vector<int>& b) {\n    if (a.size() != b.size()) return a.size() > b.size();\n    for (int i = a.size() - 1; i >= 0; --i) {\n        if (a[i] != b[i]) return a[i] > b[i];\n    }\n    return true; \/\/ \u76f8\u7b49\n}\n\n\/\/ \u9ad8\u7cbe\u5ea6\u51cf\u6cd5\uff0c\u8981\u6c42 a >= b\nvector<int> sub(const vector<int>& a, const vector<int>& b) {\n    vector<int> c;\n    int borrow = 0;  \/\/ \u501f\u4f4d\uff0c\u503c\u4e3a 0 \u6216 1\n    for (int i = 0; i < a.size(); ++i) {\n        int diff = a[i] - borrow;\n        if (i < b.size()) diff -= b[i];\n        if (diff < 0) {\n            diff += 10;\n            borrow = 1;\n        } else {\n            borrow = 0;\n        }\n        c.push_back(diff);\n    }\n    \/\/ \u53bb\u9664\u524d\u5bfc\u96f6\uff08\u4fdd\u7559\u81f3\u5c11\u4e00\u4f4d\uff09\n    while (c.size() > 1 && c.back() == 0) {\n        c.pop_back();\n    }\n    return c;\n}\n\n\/\/ \u8f93\u51fa\u5c0f\u7aef\u5e8f\u5927\u6570\nvoid printVec(const vector<int>& v) {\n    for (int i = v.size() - 1; i >= 0; --i)\n        cout << v[i];\n    cout << endl;\n}\n\nint main() {\n    string s1, s2;\n    cin >> s1 >> s2;\n    vector<int> a = strToVec(s1);\n    vector<int> b = strToVec(s2);\n\n    if (greaterOrEqual(a, b)) {\n        vector<int> result = sub(a, b);\n        printVec(result);\n    } else {\n        cout << \"-\";\n        vector<int> result = sub(b, a);\n        printVec(result);\n    }\n    return 0;\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
      \u9ad8\u7cbe\u5ea6\u51cf\u6cd5\u4e0e\u52a0\u6cd5\u7c7b\u4f3c\uff0c\u6a21\u62df\u624b\u7b97\u7ad6\u5f0f\u51cf\u6cd5\u7684\u8fc7\u7a0b\uff0c\u6838\u5fc3\u662f\u501f\u4f4d\uff08borrow\uff09\u7684\u5904\u7406\u3002\u4ee5\u53ca\u5c0f\u51cf\u5927\u7684\u5904\u7406\u3002 \u57fa\u672c\u539f\u7406  […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[61],"tags":[],"class_list":["post-1581","post","type-post","status-publish","format-standard","hentry","category-zl"],"_links":{"self":[{"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/posts\/1581","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/comments?post=1581"}],"version-history":[{"count":1,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/posts\/1581\/revisions"}],"predecessor-version":[{"id":1582,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/posts\/1581\/revisions\/1582"}],"wp:attachment":[{"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/media?parent=1581"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/categories?post=1581"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/tags?post=1581"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}