{"id":1250,"date":"2022-06-02T20:13:30","date_gmt":"2022-06-02T12:13:30","guid":{"rendered":"https:\/\/sanlangcode.com\/?p=1250"},"modified":"2022-06-02T20:13:30","modified_gmt":"2022-06-02T12:13:30","slug":"hj102-%e5%ad%97%e7%ac%a6%e7%bb%9f%e8%ae%a1treemap","status":"publish","type":"post","link":"https:\/\/sanlangcode.com\/index.php\/2022\/06\/02\/hj102-%e5%ad%97%e7%ac%a6%e7%bb%9f%e8%ae%a1treemap\/","title":{"rendered":"HJ102 \u5b57\u7b26\u7edf\u8ba1TreeMap"},"content":{"rendered":"\n

\u63cf\u8ff0<\/h2>\n\n\n\n

\u8f93\u5165\u4e00\u4e2a\u53ea\u5305\u542b\u5c0f\u5199\u82f1\u6587\u5b57\u6bcd\u548c\u6570\u5b57\u7684\u5b57\u7b26\u4e32\uff0c\u6309\u7167\u4e0d\u540c\u5b57\u7b26\u7edf\u8ba1\u4e2a\u6570\u7531\u591a\u5230\u5c11\u8f93\u51fa\u7edf\u8ba1\u7ed3\u679c\uff0c\u5982\u679c\u7edf\u8ba1\u7684\u4e2a\u6570\u76f8\u540c\uff0c\u5219\u6309\u7167ASCII\u7801\u7531\u5c0f\u5230\u5927\u6392\u5e8f\u8f93\u51fa\u3002<\/p>\n\n\n\n

\u6570\u636e\u8303\u56f4\uff1a\u5b57\u7b26\u4e32\u957f\u5ea6\u6ee1\u8db3 1 \\le len(str) \\le 1000 \\1\u2264l<\/em>e<\/em>n<\/em>(s<\/em>t<\/em>r<\/em>)\u22641000 <\/p>\n\n\n\n

\u8f93\u5165\u63cf\u8ff0\uff1a<\/h3>\n\n\n\n

\u4e00\u4e2a\u53ea\u5305\u542b\u5c0f\u5199\u82f1\u6587\u5b57\u6bcd\u548c\u6570\u5b57\u7684\u5b57\u7b26\u4e32\u3002<\/p>\n\n\n\n

\u8f93\u51fa\u63cf\u8ff0\uff1a<\/h3>\n\n\n\n

\u4e00\u4e2a\u5b57\u7b26\u4e32\uff0c\u4e3a\u4e0d\u540c\u5b57\u6bcd\u51fa\u73b0\u6b21\u6570\u7684\u964d\u5e8f\u8868\u793a\u3002\u82e5\u51fa\u73b0\u6b21\u6570\u76f8\u540c\uff0c\u5219\u6309ASCII\u7801\u7684\u5347\u5e8f\u8f93\u51fa\u3002<\/p>\n\n\n\n

\u793a\u4f8b1<\/h2>\n\n\n\n

\u8f93\u5165\uff1a<\/p>\n\n\n\n

aaddccdc\n<\/pre>\n\n\n\n
\u8f93\u51fa\uff1a<\/p>\n\n\n\n
cda\n<\/pre>\n\n\n\n
\u8bf4\u660e\uff1a<\/p>\n\n\n\n
\u6837\u4f8b\u91cc\uff0cc\u548cd\u51fa\u73b03\u6b21\uff0ca\u51fa\u73b02\u6b21\uff0c\u4f46c\u7684ASCII\u7801\u6bd4d\u5c0f\uff0c\u6240\u4ee5\u5148\u8f93\u51fac\uff0c\u518d\u8f93\u51fad\uff0c\u6700\u540e\u8f93\u51faa.<\/pre>\n\n\n\n
import java.util.Scanner;\nimport java.util.TreeMap;\n\npublic class Main {\n    public static void main(String[] args) {\n        Scanner scanner = new Scanner(System.in);\n        String str = scanner.next();\n\n        \/\/\u5c06\u5b57\u7b26\u5b58\u5165TreeMap\n        TreeMap<Character,Integer> map = new TreeMap<>();\n        for (int i = 0; i < str.length(); i++) {\n            if(!map.containsKey(str.charAt(i))){\n                map.put(str.charAt(i),1);\n            }else{\n                map.put(str.charAt(i),map.get(str.charAt(i))+1);\n            }\n        }\n\n        \/\/\u627e\u5230max\u503c\n        int max = 0;\n        for (int val:map.values()) {\n            if(val>max)\n                max = val;\n        }\n\n        \/\/\u8f93\u51fa\n        while (max>0){\n            for (char key:map.keySet()){\n                if(map.get(key)==max)\n                    System.out.print(key);\n            }\n            max--;\n        }\n\n    }\n}\n\n<\/code><\/pre>\n\n\n\n
\u533a\u522b\uff1a1\u3001HashMap\u4e2d\u5143\u7d20\u662f\u6ca1\u6709\u987a\u5e8f\u7684\uff1bTreeMap\u4e2d\u6240\u6709\u5143\u7d20\u90fd\u662f\u6709\u67d0\u4e00\u56fa\u5b9a\u987a\u5e8f\u7684\u30022\u3001HashMap\u7ee7\u627fAbstractMap\u7c7b\uff0c\u662f\u57fa\u4e8ehash\u8868\u5b9e\u73b0\u7684\uff1bTreeMap\u7ee7\u627fSortedMap\u7c7b\uff0c\u662f\u57fa\u4e8e\u7ea2\u9ed1\u6811\u5b9e\u73b0\u7684\u3002<\/p>\n\n\n\n
TreeMap\u548cHashMap\u7684\u533a\u522b<\/strong><\/p>\n\n\n\n
Map\uff1a\u5728\u6570\u7ec4\u4e2d\u662f\u901a\u8fc7\u6570\u7ec4\u4e0b\u6807\u6765\u5bf9 \u5176\u5185\u5bb9\u8fdb\u884c\u7d22\u5f15\u7684\uff0c\u800cMap\u662f\u901a\u8fc7\u5bf9\u8c61\u6765\u5bf9 \u5bf9\u8c61\u8fdb\u884c\u7d22\u5f15\u7684\uff0c\u7528\u6765 \u7d22\u5f15\u7684\u5bf9\u8c61\u53eb\u952ekey\uff0c\u5176\u5bf9\u5e94\u7684\u5bf9\u8c61\u53eb\u503cvalue\uff1b<\/p>\n\n\n\n
1\u3001HashMap\u662f\u901a\u8fc7hashcode()\u5bf9\u5176\u5185\u5bb9\u8fdb\u884c\u5feb\u901f\u67e5\u627e\u7684\uff1bHashMap\u4e2d\u7684\u5143\u7d20\u662f\u6ca1\u6709\u987a\u5e8f\u7684\uff1b<\/p>\n\n\n\n
TreeMap\u4e2d\u6240\u6709\u7684\u5143\u7d20\u90fd\u662f\u6709\u67d0\u4e00\u56fa\u5b9a\u987a\u5e8f\u7684\uff0c\u5982\u679c\u9700\u8981\u5f97\u5230\u4e00\u4e2a\u6709\u5e8f\u7684\u7ed3\u679c\uff0c\u5c31\u5e94\u8be5\u4f7f\u7528TreeMap\uff1b<\/p>\n\n\n\n
2\u3001HashMap\u548cTreeMap\u90fd\u4e0d\u662f\u7ebf\u7a0b\u5b89\u5168\u7684\uff1b<\/p>\n\n\n\n
3\u3001HashMap\u7ee7\u627fAbstractMap\u7c7b\uff1b\u8986\u76d6\u4e86hashcode() \u548cequals() \u65b9\u6cd5\uff0c\u4ee5\u786e\u4fdd\u4e24\u4e2a\u76f8\u7b49\u7684\u6620\u5c04\u8fd4\u56de\u76f8\u540c\u7684\u54c8\u5e0c\u503c\uff1b<\/p>\n\n\n\n
TreeMap\u7ee7\u627fSortedMap\u7c7b\uff1b\u4ed6\u4fdd\u6301\u952e\u7684\u6709\u5e8f\u987a\u5e8f\uff1b<\/p>\n\n\n\n
4\u3001HashMap\uff1a\u57fa\u4e8ehash\u8868\u5b9e\u73b0\u7684\uff1b\u4f7f\u7528HashMap\u8981\u6c42\u6dfb\u52a0\u7684\u952e\u7c7b\u660e\u786e\u5b9a\u4e49\u4e86hashcode() \u548cequals() \uff08\u53ef\u4ee5\u91cd\u5199\u8be5\u65b9\u6cd5\uff09\uff1b\u4e3a\u4e86\u4f18\u5316HashMap\u7684\u7a7a\u95f4\u4f7f\u7528\uff0c\u53ef\u4ee5\u8c03\u4f18\u521d\u59cb\u5bb9\u91cf\u548c\u8d1f\u8f7d\u56e0\u5b50\uff1b<\/p>\n\n\n\n
TreeMap\uff1a\u57fa\u4e8e\u7ea2\u9ed1\u6811\u5b9e\u73b0\u7684\uff1bTreeMap\u5c31\u6ca1\u6709\u8c03\u4f18\u9009\u9879\uff0c\u56e0\u4e3a\u7ea2\u9ed1\u6811\u603b\u662f\u5904\u4e8e\u5e73\u8861\u7684\u72b6\u6001\uff1b<\/p>\n\n\n\n
5\u3001HashMap\uff1a\u9002\u7528\u4e8eMap\u63d2\u5165\uff0c\u5220\u9664\uff0c\u5b9a\u4f4d\u5143\u7d20\uff1b<\/p>\n\n\n\n
TreeMap\uff1a\u9002\u7528\u4e8e\u6309\u81ea\u7136\u987a\u5e8f\u6216\u81ea\u5b9a\u4e49\u987a\u5e8f\u904d\u5386\u952e\uff08key\uff09\uff1b<\/p>\n","protected":false},"excerpt":{"rendered":"
\u63cf\u8ff0 \u8f93\u5165\u4e00\u4e2a\u53ea\u5305\u542b\u5c0f\u5199\u82f1\u6587\u5b57\u6bcd...<\/p>\n","protected":false},"author":1,"featured_media":1075,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-1250","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-4"],"_links":{"self":[{"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/posts\/1250","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/comments?post=1250"}],"version-history":[{"count":0,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/posts\/1250\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/media\/1075"}],"wp:attachment":[{"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/media?parent=1250"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/categories?post=1250"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sanlangcode.com\/index.php\/wp-json\/wp\/v2\/tags?post=1250"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}