{"id":1583,"date":"2026-05-19T15:53:41","date_gmt":"2026-05-19T07:53:41","guid":{"rendered":"http:\/\/wordpress.fangt.online\/?p=1583"},"modified":"2026-05-19T15:53:41","modified_gmt":"2026-05-19T07:53:41","slug":"%e9%ab%98%e7%b2%be%e5%ba%a6%e4%b9%98%e6%b3%95%ef%bc%88%e9%ab%98%e7%b2%be%e4%b9%98%e4%bb%a5%e4%bd%8e%e7%b2%be%ef%bc%89","status":"publish","type":"post","link":"http:\/\/wordpress.fangt.online\/index.php\/2026\/05\/19\/%e9%ab%98%e7%b2%be%e5%ba%a6%e4%b9%98%e6%b3%95%ef%bc%88%e9%ab%98%e7%b2%be%e4%b9%98%e4%bb%a5%e4%bd%8e%e7%b2%be%ef%bc%89\/","title":{"rendered":"\u9ad8\u7cbe\u5ea6\u4e58\u6cd5\uff08\u9ad8\u7cbe\u4e58\u4ee5\u4f4e\u7cbe\uff09"},"content":{"rendered":"\n

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

\u6a21\u4eff\u624b\u7b97\u7ad6\u5f0f\u4e58\u6cd5\uff0c\u8fd9\u91cc\u662f\u4e00\u4e2a\u591a\u4f4d\u6570\u4e58\u4ee5\u4e00\u4e2a\u4e00\u4f4d\u6570\uff08\u5e38\u89c4\u6574\u6570\u53ef\u80fd\u6709\u591a\u4f4d\uff0c\u4f46\u6211\u4eec\u5c06\u5b83\u89c6\u4e3a\u4e00\u4e2a\u6574\u4f53\uff0c\u4e0d\u62c6\u5f00\uff09\u3002<\/p>\n\n\n\n

\u8ba1\u7b97 A \u00d7 b<\/code>\uff08A \u662f\u5927\u6574\u6570\uff0cb \u662f\u5e38\u89c4\u6574\u6570\uff0c\u4e14 b \u975e\u8d1f\uff0c\u901a\u5e38 b \u8f83\u5c0f\uff09\uff1a<\/p>\n\n\n\n

    \n
  1. \u4ece A \u7684\u6700\u4f4e\u4f4d\uff08\u6570\u7ec4\u4e0b\u68070\uff09\u5f00\u59cb\uff0c\u9010\u4f4d\u4e58\u4ee5 b\uff0c\u518d\u52a0\u4e0a\u4e0a\u4e00\u4f4d\u7684\u8fdb\u4f4d\u3002<\/li>\n\n\n\n
  2. \u5f53\u524d\u4f4d\u7684\u4e58\u79ef =\u00a0A[i] \u00d7 b + carry<\/code>\uff0c\u5f53\u524d\u7ed3\u679c\u4f4d =\u00a0(A[i] \u00d7 b + carry) % 10<\/code>\uff0c\u65b0\u7684\u8fdb\u4f4d =\u00a0(A[i] \u00d7 b + carry) \/ 10<\/code>\u3002<\/li>\n\n\n\n
  3. \u5904\u7406\u5b8c A \u7684\u6240\u6709\u4f4d\u540e\uff0c\u5982\u679c\u8fdb\u4f4d\u4e0d\u4e3a0\uff0c\u9700\u8981\u7ee7\u7eed\u5411\u9ad8\u4f4d\u6dfb\u52a0\u8fdb\u4f4d\u6570\u5b57\uff08\u53ef\u80fd\u4e0d\u6b62\u4e00\u4f4d\uff0c\u6bd4\u5982\u8fdb\u4f4d\u662f123\uff0c\u8981\u62c6\u6210[3,2,1]\u4f9d\u6b21\u52a0\u5165\uff09\u3002<\/li>\n\n\n\n
  4. \u6700\u540e\u53bb\u9664\u7ed3\u679c\u6570\u7ec4\u524d\u7aef\u7684\u591a\u4f59\u96f6\uff08\u524d\u5bfc\u96f6\uff09\u3002<\/li>\n<\/ol>\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\/\/ \u9ad8\u7cbe\u5ea6 \u00d7 \u4f4e\u7cbe\u5ea6 (b \u662f\u666e\u901a\u6574\u6570\uff0c\u5982 int)\nvector<int> mul(const vector<int>& a, int b) {\n    vector<int> c;\n    int carry = 0;\n    for (int i = 0; i < a.size() || carry; ++i) {\n        if (i < a.size()) carry += a[i] * b;\n        c.push_back(carry % 10);\n        carry \/= 10;\n    }\n    \/\/ \u53bb\u9664\u524d\u5bfc\u96f6\uff08\u4f46\u7ed3\u679c\u4e3a\u96f6\u65f6\u5e94\u4fdd\u7559\u4e00\u4e2a0\uff09\n    while (c.size() > 1 && c.back() == 0) c.pop_back();\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 s;\n    int b;\n    cin >> s >> b;\n    vector<int> a = strToVec(s);\n    vector<int> result = mul(a, b);\n    printVec(result);\n    return 0;\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
    \u57fa\u672c\u539f\u7406 \u6a21\u4eff\u624b\u7b97\u7ad6\u5f0f\u4e58\u6cd5\uff0c\u8fd9\u91cc\u662f\u4e00\u4e2a\u591a\u4f4d\u6570\u4e58\u4ee5\u4e00\u4e2a\u4e00\u4f4d\u6570\uff08\u5e38\u89c4\u6574\u6570\u53ef\u80fd\u6709\u591a\u4f4d\uff0c\u4f46\u6211\u4eec\u5c06\u5b83\u89c6\u4e3a\u4e00\u4e2a\u6574\u4f53\uff0c\u4e0d\u62c6\u5f00 […]<\/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-1583","post","type-post","status-publish","format-standard","hentry","category-zl"],"_links":{"self":[{"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/posts\/1583","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=1583"}],"version-history":[{"count":1,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/posts\/1583\/revisions"}],"predecessor-version":[{"id":1584,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/posts\/1583\/revisions\/1584"}],"wp:attachment":[{"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/media?parent=1583"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/categories?post=1583"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wordpress.fangt.online\/index.php\/wp-json\/wp\/v2\/tags?post=1583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}