{"id":269301,"date":"2021-01-09T22:04:21","date_gmt":"2021-01-09T14:04:21","guid":{"rendered":"http:\/\/4563.org\/?p=269301"},"modified":"2021-01-09T22:04:21","modified_gmt":"2021-01-09T14:04:21","slug":"%e5%a6%82%e4%bd%95%e8%ae%be%e8%ae%a1%e4%b8%80%e4%b8%aa-arraylike-%e6%95%b0%e6%8d%ae%e7%bb%93%e6%9e%84%ef%bc%8c%e6%94%af%e6%8c%81-o1-%e7%9a%84%e6%8c%89%e7%b4%a2%e5%bc%95%e8%ae%bf%e9%97%ae%e5%92%8c-o","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=269301","title":{"rendered":"\u5982\u4f55\u8bbe\u8ba1\u4e00\u4e2a arraylike \u6570\u636e\u7ed3\u6784\uff0c\u652f\u6301 O(1) \u7684\u6309\u7d22\u5f15\u8bbf\u95ee\u548c O(1) \u7684\u6309\u7d22\u5f15\u5220\u9664."},"content":{"rendered":"
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\u5982\u4f55\u8bbe\u8ba1\u4e00\u4e2a arraylike \u6570\u636e\u7ed3\u6784\uff0c\u652f\u6301 O(1) \u7684\u6309\u7d22\u5f15\u8bbf\u95ee\u548c O(1) \u7684\u6309\u7d22\u5f15\u5220\u9664. <\/h1>\n

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\u8cc7\u6df1\u5927\u4f6c : littleMaple <\/span> <\/i> 2<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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\u7528\u4ee3\u7801\u6765\u4f5c\u4e3a\u4f8b\u5b50\uff0c\u5047\u8bbe\u6211\u4eec\u7684\u6570\u636e\u7ed3\u6784\u540d\u4e3a MagicArray\uff1a<\/p>\n

magic_array = MagicArray(\"How are you\", \"I am find\", \"Thank you\", \"And you\")  print(magic_array[2])  # \u8fd9\u4e00\u884c\u5e94\u8be5\u6253\u5370 \"Thank you\"\uff0c\u4e14\u8be5\u884c\u7684\u8fd0\u884c\u65f6\u95f4\u5e94\u8be5\u4e0e magic_array \u7684\u957f\u5ea6\u65e0\u5173\uff0c\u6216\u8005\u81f3\u5c11\u201c\u644a\u8fd8\u5730\u201d\u65e0\u5173.  magic_array.remove(1)  # \u8fd9\u4e00\u884c\u7684\u8fd0\u884c\u65f6\u95f4\u5e94\u8be5\u4e0e magic_array \u7684\u957f\u5ea6\u65e0\u5173\uff0c\u6216\u8005\u81f3\u5c11\u201c\u644a\u8fd8\u5730\u201d\u65e0\u5173.  print(magic_array[2])  # \u8fd9\u4e00\u884c\u5e94\u8be5\u6253\u5370 \"And you\"\uff0c\u4e14\u8be5\u884c\u7684\u8fd0\u884c\u65f6\u95f4\u5e94\u8be5\u4e0e magic_array \u7684\u957f\u5ea6\u65e0\u5173\uff0c\u6216\u8005\u81f3\u5c11\u201c\u644a\u8fd8\u5730\u201d\u65e0\u5173. <\/code><\/pre>\n
\u5982\u679c\u6211\u4eec\u65e0\u6cd5\u8bbe\u8ba1\u51fa\u8fd9\u6837\u7684\u6570\u636e\u7ed3\u6784\uff0c\u6211\u4eec\u5982\u4f55\u5f62\u5f0f\u8bc1\u660e\u5b83\u4e0d\u53ef\u80fd\u5b58\u5728\uff1f\u5982\u679c\u786e\u5b9e\u4e0d\u53ef\u80fd\u5b58\u5728\uff0c\u6211\u4eec\u53ef\u4ee5\u8bbe\u8ba1\u51fa\u7684\u6700\u63a5\u8fd1\u5b83\u7684\u6700\u5feb\u7684\u6570\u636e\u7ed3\u6784\u80fd\u591f\u6709\u591a\u5feb\uff1f<\/p>\n<\/p><\/div>\n
<\/p>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (22<\/span>)        <\/div>\n
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     \u8cc7\u6df1\u5927\u4f6c : xupefei <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u94fe\u8868+\u4f4d\u7f6e\u5230\u8282\u70b9\u7684\u54c8\u5e0c\u8868\u3002
    \u8fd9\u9898\u7b97\u662f leetcode \u4e2d\u7b49\u96be\u5ea6\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : php8 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u54b1 php \u6570\u7ec4\u63d2\u5165\u548c\u5220\u9664\u90fd\u662f O(1)\u6ef4\uff0c\u8fd8\u80fd\u5f53 map \u7528\uff0c\u96be\u602a\u88ab\u516c\u8ba4\u662f\u6700\u597d\u7684\u8bed\u8a00                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : xupefei <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @xupefei \u4e0d\u8fc7\u6211\u8fd9\u4e2a\u529e\u6cd5\u5220\u9664\u6bd4 O1 \u590d\u6742\uff0c\u6700\u574f\u60c5\u51b5\u4e0b\u662f On \u3002
    \u7528 jumplist \u53ef\u80fd\u4f1a\u66f4\u597d                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : littleMaple <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @xupefei #1 \u5220\u9664\u64cd\u4f5c\u7684\u65f6\u5019\u7ef4\u62a4\u300c\u4f4d\u7f6e\u6620\u5c04\u5230\u8282\u70b9\u7684\u54c8\u5e0c\u8868\u300d\u5c31\u9700\u8981 O(n) \u7684\u590d\u6742\u5ea6\u5427\uff1f\u4f8b\u5982 magic_array.remove(1) \u64cd\u4f5c\u8fd0\u884c\u7684\u65f6\u5019\uff0c2->”Thank you” \u548c 3->”And you” \u8fd9\u4e24\u4e2a\u6620\u5c04\u5c31\u9700\u8981\u66f4\u65b0\u6210 1->”Thank you” \u548c 2->”And you”\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : xupefei <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6700\u597d\u7684\u529e\u6cd5\u5e94\u8be5\u662f\u7528 rope\uff0c\u80fd\u505a\u5230 logn \u590d\u6742\u5ea6                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : sunkai0609 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 php \u7684\u6570\u7ec4                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : sunkai0609 <\/span>  <\/div>\n
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                                                                 @sunkai0609 \u8bf7\u65e0\u89c6\u6211                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : hanxiV2EX <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u8df3\u8dc3\u8868\uff0credis \u7684 zset<\/p>\n
    \u53ea\u80fd\u505a\u5230 lgn                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : love <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u8fd9\u548c map \u7528\u6574\u6570\u505a key \u6709\u4ec0\u4e48\u533a\u522b?                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : mxT52CRuqR6o5 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @php8 \u6211 google \u4e86\u4e00\u4e0b php \u7684 array_splice \u53ef\u5e76\u4e0d\u662f O(1)\u800c\u662f O(offset+length)\u554a                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : mxT52CRuqR6o5 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u8fd9\u4e2a\u95ee\u9898\u4e00\u4e24\u53e5\u5e94\u8be5\u8bc1\u660e\u4e0d\u4e86\uff0c\u4e66\u4e0a\u4e5f\u8bb8\u4f1a\u6709\u7b54\u6848                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : raaaaaar <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u7ed3\u5408\u94fe\u8868\u7684\u589e\u5220\u548c\u6570\u7ec4\u7684\u67e5\u6539\u4f18\u70b9\u5c31\u662f\u8df3\u8868\uff0c\u6240\u4ee5\u4e0d\u53ef\u80fd\u5b58\u5728\u4f60\u8bf4\u5f97\u8fd9\u79cd\u4e0a\u754c\u90fd\u662f O(1) \u7684\u3002
    \u67e5\u627e\u64cd\u4f5c\u6700\u597d\u7684\u5c31\u662f\u5229\u7528\u5185\u5b58\u7684\u968f\u673a\u5b58\u53d6\u7279\u70b9\uff0c\u4f46\u662f\u8981\u5b9e\u73b0\u5220\u9664\u64cd\u4f5c\u5c31\u5fc5\u7136\u548c\u968f\u673a\u5b58\u53d6\u51b2\u7a81\uff0c\u56e0\u4e3a\u5220\u9664\u8282\u70b9\u5185\u5b58\u5c31\u53d8\u4e86\uff0c\u5730\u5740\u4e5f\u53d8\u4e86\uff0c\u8981\u4e0d\u5f71\u54cd\u968f\u673a\u5b58\u53d6\uff0c\u5185\u5b58\u80af\u5b9a\u8981\u79fb\u52a8\u7684\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : littleMaple <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @love #9 \u56e0\u4e3a\u8981\u6c42\u662f arraylike\uff0c\u4f8b\u5982\u5982\u679c\u5220\u9664\u4e86\u7b2c\u4e09\u4e2a\u5143\u7d20\uff0c\u7b2c\u56db\u4e2a\u5143\u7d20\u81f3\u6700\u540e\u4e00\u4e2a\u5143\u7d20\u5bf9\u5e94\u7684\u7d22\u5f15\u90fd\u8981\u76f8\u5e94\u7684\u51cf\u4e00.                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : littleMaple <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @raaaaaar #12 \u786e\u5b9e\u5982\u6b64\uff0c\u76f4\u89c2\u4e0a\u6765\u8bf4 O(1) access \u548c O(1) remove \u4e0d\u53ef\u80fd\u540c\u65f6\u6ee1\u8db3\uff0c\u4f46\u662f\u82e5\u662f amortized O(1) access \u548c amortized O(1) remove \u5462\uff1f\u653e\u5bbd\u4e00\u70b9\u8981\u6c42\u4e4b\u540e\u4e0d\u77e5\u9053\u80fd\u4e0d\u80fd\u540c\u65f6\u6ee1\u8db3.                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : php8 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @mxT52CRuqR6o5 \u662f\u6211\u7406\u89e3\u6709\u8bef\uff0c\u6ca1\u6709\u8003\u8651\u5230\u5220\u9664\u4e4b\u540e\u4e0b\u6807\u8981\u4f9d\u6b21\u632a\u4e00\u683c                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : wangxiyu191 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6ca1\u8981\u6c42\u63d2\u5165\u7684\u65f6\u95f4\u548c\u7a7a\u95f4\u590d\u6742\u5ea6\uff0c\u94bb\u4e2a\u7a7a\u5b50\u3002\u53ef\u4ee5\u5728\u521d\u59cb\u5316 \/\u63d2\u5165\u65f6\u5c31\u751f\u6210\u597d\u4e00\u6b21\u6216\u591a\u6b21\u5220\u9664\u540e\u53ef\u80fd\u8fbe\u5230\u7684\u6240\u6709\u7684\u72b6\u6001\u3002\u8fd9\u6837\u63d2\u5165\u548c\u5220\u9664\u5c31\u90fd\u80fd\u505a O(1) \u4e86\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : wangxiyu191 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @wangxiyu191 \u4e0a\u9762\u6700\u540e\u4e00\u53e5\u6253\u9519\u3002\u201c\u8fd9\u6837\u63d2\u5165\u548c\u5220\u9664\u5c31\u90fd\u80fd\u505a O(1) \u4e86\u201d -\u300b \u201c\u8fd9\u6837\u67e5\u8be2\u548c\u5220\u9664\u5c31\u90fd\u80fd\u505a O(1) \u4e86\u201d                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : sunnybird <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u7b97\u6cd5\u6838\u5fc3\u601d\u60f3\uff0c\u7a7a\u95f4\u6362\u65f6\u95f4                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : shiji <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @littleMaple Hashmap \u7684\u6838\u5fc3\u4e0d\u5c31\u662f array \u4e48\u3002 \u53c8\u6ca1\u6709\u5fc5\u8981\u8bf4 array \u4e0d\u80fd\u7559\u7a7a\uff0c\u5fc5\u987b\u4e00\u5b57\u6392\u5f00                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : littleMaple <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @wangxiyu191 #16 \u4f60\u5c45\u7136\u80fd\u60f3\u5230\u8fd9\u6837\u66b4\u529b\u7684\u65b9\u6848 XD \u800c\u4e14\u5c45\u7136\u662f\u5bf9\u7684.                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : littleMaple <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @shiji #19 \u6211\u8bf4\u7684 arraylike \u4e0d\u662f\u8fd9\u4e2a\u610f\u601d\uff0c\u4f60\u53ef\u4ee5\u770b\u6211\u5199\u5728\u6807\u9898\u91cc\u7684\u90a3\u4e00\u6bb5\u4ee3\u7801\uff0c\u8fd9\u4e2a\u6570\u636e\u7ed3\u6784\u5e94\u8be5\u8981\u80fd\u591f\u6ee1\u8db3\u90a3\u91cc\u63cf\u8ff0\u7684\u884c\u4e3a.                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : ericls <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u90a3\u5c31\u8ba9\u63d2\u5165\u8d35\u4e00\u70b9\u561b                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    \u5982\u4f55\u8bbe\u8ba1\u4e00\u4e2a arraylike …<\/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\/269301"}],"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=269301"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/269301\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=269301"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=269301"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=269301"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}