{"id":4671,"date":"2023-12-30T20:39:03","date_gmt":"2023-12-30T12:39:03","guid":{"rendered":"https:\/\/xinchewhd.com.cn\/index.php\/%e9%9d%a2%e8%af%95\/%e9%ab%98%e9%a2%91%e9%9d%a2%e8%af%95%e9%a2%98%ef%bc%9a%e5%90%88%e5%b9%b6%e4%b8%a4%e4%b8%aalist%e5%b9%b6%e5%8e%bb%e9%87%8d\/"},"modified":"2023-12-30T20:39:03","modified_gmt":"2023-12-30T12:39:03","slug":"%e9%ab%98%e9%a2%91%e9%9d%a2%e8%af%95%e9%a2%98%ef%bc%9a%e5%90%88%e5%b9%b6%e4%b8%a4%e4%b8%aalist%e5%b9%b6%e5%8e%bb%e9%87%8d","status":"publish","type":"post","link":"https:\/\/xinchewhd.com.cn\/index.php\/%e9%9d%a2%e8%af%95\/%e9%ab%98%e9%a2%91%e9%9d%a2%e8%af%95%e9%a2%98%ef%bc%9a%e5%90%88%e5%b9%b6%e4%b8%a4%e4%b8%aalist%e5%b9%b6%e5%8e%bb%e9%87%8d\/","title":{"rendered":"\u9ad8\u9891\u9762\u8bd5\u9898\uff1a\u5408\u5e76\u4e24\u4e2aList\u5e76\u53bb\u91cd"},"content":{"rendered":"
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\u6b22\u8fce\u5173\u6ce8\u5fae\u4fe1\u516c\u4f17\u53f7\uff1a<\/span>\u4e92\u8054\u7f51\u5168\u6808\u67b6\u6784<\/span><\/section>\n
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\u5408\u5e76\u4e24\u4e2aList\u4e2d\u5e76\u53bb\u6389\u91cd\u590d\u7684\u5143\u7d20\uff0c\u6709\u597d\u51e0\u79cd\u65b9\u6cd5\uff0c\u6211\u4eec\u6765\u770b\u770b\u5e38\u89c1\u7684\u4e09\u79cd\uff1a<\/section>\n
\u4e00\u3001\u4f7f\u7528HashSet<\/strong><\/section>\n

HashSet\u662f\u4e00\u4e2a\u6ca1\u6709\u91cd\u590d\u5143\u7d20\u7684\u96c6\u5408\uff0c\u53ef\u4ee5\u5229\u7528\u8fd9\u4e2a\u7279\u6027\uff0c\u628aList\u4e2d\u7684\u5143\u7d20\u9010\u4e00\u6dfb\u52a0\u5230HashSet\u4e2d\uff0c\u6700\u7ec8\u5f97\u5230\u7684\u5c31\u662f\u6ca1\u6709\u91cd\u590d\u5143\u7d20\u7684\u7ed3\u679c\uff1a<\/p>\n

\n
<\/span>package<\/span>com.sample.algo.list;import<\/span>java.util.*;import<\/span>java.util.function.Function;import<\/span>java.util.stream.Collectors;\/\/\u4f7f\u7528mergeFunction\u6765\u8fdb\u884c\u5408\u5e76<\/span>public<\/span>class<\/span>MergeWithMap<\/span><\/span>{public<\/span>static<\/span>void<\/span>main<\/span>(String[]args)<\/span><\/span>{List<Integer>list1=new<\/span>ArrayList<>(Arrays.asList(1<\/span>,2<\/span>,3<\/span>,4<\/span>,5<\/span>));List<Integer>list2=new<\/span>ArrayList<>(Arrays.asList(4<\/span>,5<\/span>,6<\/span>));\/\/\u5408\u5e76\u6210\u4e00\u4e2alist<\/span>List<Integer>listAll=new<\/span>ArrayList<>(list1);listAll.addAll(list2);\/\/\u8fd9\u6837\u5199\u4f1a\u629b\u51faDuplicatekey\u5f02\u5e38<\/span>\/\/Map<Integer,Integer>map=listAll.stream().<\/span>\/\/collect(Collectors.toMap(Integer::intValue,(p)->p));<\/span>\/\/\u5904\u7406\u76f8\u540ckey\u7684\u60c5\u51b5\uff0c\u4e5f\u5c31\u662f\u53d6\u5176\u4e2d\u4e00\u4e2a<\/span>Map<Integer,Integer>map=listAll.stream().collect(Collectors.toMap(Integer::intValue,Function.identity(),(first,second)->second));List<Integer>result=new<\/span>ArrayList<>(map.keySet());System.out.println(\"\u53bb\u91cd\u540e\u7684List\uff1a\"<\/span>+result);}}<\/code><\/pre>\n<\/section>\n
\n
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\u5f7b\u5e95\u641e\u61c2MySQL\u7684\u6267\u884c\u8ba1\u5212<\/a><\/a><\/strong><\/span><\/p>\n
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\u6570\u636e\u540c\u6b65\u7684\u5229\u5668\uff1aCanal<\/a><\/span><\/p>\n
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\u804a\u804aMySQL\u4e2d\u7684\u6b7b\u9501<\/a><\/span><\/p>\n
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