{"id":192851,"date":"2020-11-15T14:01:39","date_gmt":"2020-11-15T06:01:39","guid":{"rendered":"http:\/\/4563.org\/?p=192851"},"modified":"2020-11-15T14:01:39","modified_gmt":"2020-11-15T06:01:39","slug":"1-8-hashmap-%e9%87%8c%e7%9a%84-hash-%e6%96%b9%e6%b3%95%e6%98%af%e4%bb%80%e4%b9%88%e6%84%8f%e6%80%9d%e5%91%a2","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=192851","title":{"rendered":"1.8 Hashmap \u91cc\u7684 hash \u65b9\u6cd5\u662f\u4ec0\u4e48\u610f\u601d\u5462"},"content":{"rendered":"
\n
\n
\n

1.8 Hashmap \u91cc\u7684 hash \u65b9\u6cd5\u662f\u4ec0\u4e48\u610f\u601d\u5462 <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : rqxiao <\/span> <\/i> 6<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

return (key == null) ? 0 : (h = key.hashCode()) ^ (h >>> 16);<\/p>\n

\u7f51\u4e0a\u8bf4\u662f\u8ba9\u8fd9\u4e2a key \u53ef\u4ee5\u66f4\u52a0\u5206\u6563\uff1f<\/p>\n

\u8ba9\u539f\u672c\u7684 hashcode \u548c \u539f\u672c hashcode \u65e0\u7b26\u53f7\u53f3\u79fb 16 \u4f4d \u8fdb\u884c\u4e00\u6b21\u5f02\u6216<\/p>\n<\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (3<\/span>) <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : kerb15 <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u6270\u52a8\u51fd\u6570\uff0c\u5c06\u9ad8\u4f4d\u548c\u5730\u4f4d\u505a\u5f02\u6216\uff0c\u4e3b\u8981\u662f\u4e3a\u4e86\u8ba9\u6240\u6709\u4e8c\u8fdb\u5236\u4f4d\u90fd\u80fd\u8fdb\u6765\u53c2\u4e0e\u8fd0\u7b97\uff0c\u589e\u52a0\u968f\u673a\u6027\uff0c\u4f7f\u5f97\u6563\u5217\u7684\u6548\u679c\u66f4\u597d <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : SoloCompany <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u56e0\u4e3a\u6876\u7684\u6570\u91cf\u901a\u5e38\u4e0d\u4f1a\u8d85\u8fc7 65536, \u5f02\u6216\u4e00\u4e0b\u51cf\u5c11\u9ad8\u4f4d\u4fe1\u606f\u71b5\u7684\u6d6a\u8d39 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
    \u8cc7\u6df1\u5927\u4f6c : AllanAG <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u5728\u8fd9\u4e2a\u65b9\u6cd5\u4e2d\u5c06 key \u7684 hashcode \u53f3\u79fb 16 \u4f4d\uff0c\u7136\u540e\u6309\u4f4d\u5f02\u6216\u3002\u5f02\u6216\u7b97\u6cd5\u662f\u76f8\u540c\u4e3a 0\uff0c\u4e0d\u540c\u4e3a 1 \u3002
    \u53f3\u79fb 16 \u4f4d\u4ee5\u540e\uff0c\u539f\u6765\u7684\u9ad8 16 \u4f4d\u5c31\u5230\u4e86\u4f4e 16 \u4f4d\u4e0a\uff0c\u518d\u4e0e\u539f\u6765\u7684\u6570\u5f02\u6216\uff0c\u5c31\u76f8\u5f53\u4e8e\u9ad8 16 \u4f4d\u4e0e\u4f4e 16 \u4f4d\u5f02\u6216\u3002
    \u56e0\u6b64 hash \u7b97\u6cd5\u7684\u4f5c\u7528\u5c31\u662f\u9ad8 16 \u4f4d\u4e0d\u53d8\uff0c\u4f4e 16 \u4f4d\u548c\u9ad8 16 \u4f4d\u505a\u5f02\u6216\u3002 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    1.8 Hashmap \u91cc\u7684 ha…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/192851"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=192851"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/192851\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=192851"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=192851"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=192851"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}