{"id":320,"date":"2020-04-18T22:27:52","date_gmt":"2020-04-18T14:27:52","guid":{"rendered":"http:\/\/www.zyhcoding.club\/?p=320"},"modified":"2020-04-18T22:54:33","modified_gmt":"2020-04-18T14:54:33","slug":"%e5%b9%b6%e6%9f%a5%e9%9b%86","status":"publish","type":"post","link":"http:\/\/www.zyhcoding.club\/index.php\/2020\/04\/18\/%e5%b9%b6%e6%9f%a5%e9%9b%86\/","title":{"rendered":"\u5e76\u67e5\u96c6\u539f\u7406"},"content":{"rendered":"

\u5e76\u67e5\u96c6<\/h2>\n

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\n\u5e76\u67e5\u96c6\u4e2d\uff0c\u4f7f\u7528\u4e00\u4e2a\u96c6\u5408\u4e2d\u7684\u67d0\u4e2a\u5143\u7d20\u6765\u6807\u8bb0\u8fd9\u4e2a\u96c6\u5408\uff0c\u8fd9\u548c\u5143\u7d20\u4efb\u610f\u3002\u6211\u4eec\u628a\u8fd9\u4e2a\u7528\u6765\u6807\u8bb0\u6574\u4e2a\u96c6\u5408\u7684\u5143\u7d20\u79f0\u4e3a\u6700\u5927\u8001\u5927\u3002\u5b9a\u4e49\u6570\u7ec4fa(father..)\uff0cfa[x]\u6240\u5728\u7684\u96c6\u5408\u5c31\u662fx\u6240\u5728\u7684\u96c6\u5408\uff0cfa[x]\u662fx\u7684\u76f4\u7cfb\u8001\u5927\u3002\u5f53fa[x]==x\u65f6\uff0c\u8fd9\u4e2ax\u5c31\u662f\u6700\u5927\u8001\u5927\u4e86\u3002
\n\u6709\u4e86\u4e0a\u9762\u7684\u5173\u7cfb\uff0c\u53ef\u4ee5\u77e5\u9053\u4e00\u4e2a\u96c6\u5408\u91cc\u7684\u5143\u7d20\u6700\u7ec8\u6307\u5411\u7684\u8001\u5927\u80af\u5b9a\u662f\u8fd9\u4e2a\u96c6\u5408\u7684\u6700\u5927\u8001\u5927\u3002\u800c\u5408\u5e76\u4e24\u4e2a\u96c6\u5408\u7684\u65f6\u5019\uff0c\u5728\u8fd9\u4e24\u4e2a\u96c6\u5408\u7684\u4e24\u4e2a\u6700\u5927\u8001\u5927\u91cc\u4efb\u9009\u4e00\u4e2a\u4f5c\u4e3a\u5408\u5e76\u540e\u7684\u6700\u5927\u8001\u5927\u5373\u53ef\u3002
\n\u8fd9\u5c31\u662f\u5e76\u67e5\u96c6\u7684\u57fa\u672c\u539f\u7406\u3002
\n\u90a3\u4e48\u521d\u59cb\u65f6\uff0c\u6bcf\u4e2a\u5143\u7d20\u81ea\u6210\u4e00\u4e2a\u96c6\u5408\u3002<\/p>\n

for (int i=1;i<=n;i++)\n    fa[i] = i;<\/code><\/pre>\n
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\n\u53ea\u9700\u68c0\u67e5\u8fd9\u4e24\u4e2a\u5143\u7d20\u7684\u6700\u5927\u8001\u5927\u662f\u5426\u76f8\u7b49\u5373\u53ef\uff01<\/p>\n
\u67e5\u627e\u4e00\u4e2a\u5143\u7d20\u7684\u6700\u5927\u8001\u5927<\/h4>\n
int find(int x){\n    if (x==f[x])    return x;\n    return fa[x] = find(fa[x]);\n}<\/code><\/pre>\n
\u5728\u4e0a\u8ff0\u4ee3\u7801\u4e2d\uff0c\u82e5x==fa[x]\uff0cx\u5c31\u662f\u6700\u5927\u8001\u5927\uff0c\u8fd9\u662f\u9012\u5f52\u7ec8\u6b62\u6761\u4ef6\u3002
\n\u5426\u5219\uff0c\u8fd4\u56defind(fa[x])\u3002\u540c\u65f6\uff0c\u6211\u4eec\u77e5\u9053\uff0c\u4e00\u4e2a\u96c6\u5408\u4e2d\u7684\u76f4\u7cfb\u8001\u5927\u8d8a\u5c11\uff0c\u5373\u8d8a\u591a\u7684\u5143\u7d20\u76f4\u63a5\u6307\u5411\u6700\u5927\u8001\u5927\uff0c\u6bcf\u6b21\u67e5\u627e\u7684\u901f\u5ea6\u5c31\u8d8a\u5feb\uff0c\u6240\u4ee5\u6709fa[x] = find(fa[x]);
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int find(int x){\n    while (x!=fa[x])    x = fa[x] = fa[fa[x]];\n    return x;\n}<\/code><\/pre>\n
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\u5408\u5e76\u4e24\u4e2a\u96c6\u5408<\/h4>\n
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fa[find(x)] = find(y);<\/code><\/pre>\n
x\uff0cy\u7684\u6b21\u5e8f\u5e76\u4e0d\u91cd\u8981\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
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