{"id":1116,"date":"2022-10-24T22:39:36","date_gmt":"2022-10-24T14:39:36","guid":{"rendered":"https:\/\/qaqaq.top\/?p=1116"},"modified":"2022-11-27T12:39:49","modified_gmt":"2022-11-27T04:39:49","slug":"%e5%b8%b8%e7%94%a8%e7%b1%bb-string%e8%af%be%e5%90%8e%e7%ae%97%e6%b3%95%e9%a2%98%e7%9b%ae1","status":"publish","type":"post","link":"https:\/\/qaqaq.top\/?p=1116","title":{"rendered":"\u5e38\u7528\u7c7b-String\u8bfe\u540e\u7b97\u6cd5\u9898\u76ee1"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>package top.qaqaq.java.P475;\r\n\r\nimport org.junit.jupiter.api.Test;\r\n\r\n\/**\r\n * @author RichieZhang\r\n * @create 2022-10-23 \u4e0b\u5348 2:17\r\n *\/\r\npublic class StringDemo {\r\n\r\n    \/*\r\n    \u5c06\u4e00\u4e2a\u5b57\u7b26\u4e32\u8fdb\u884c\u53cd\u8f6c\u3002\u5c06\u5b57\u7b26\u4e32\u4e2d\u6307\u5b9a\u90e8\u5206\u8fdb\u884c\u53cd\u8f6c\u3002\u6bd4\u5982\u201cabcdefg\u201d\u53cd\u8f6c\u4e3a\u201dabfedcg\u201d\r\n    \r\n    \u65b9\u5f0f\u4e00\uff1a\u8f6c\u6362\u4e3achar&#91;]\r\n     *\/\r\n    public String reverse(String str, int startIndex, int endIndex){\r\n\r\n        if(str != null){\r\n            char&#91;] arr = str.toCharArray();\r\n            for (int x = startIndex,y = endIndex;x &lt; y;x++,y--){\r\n                char temp = arr&#91;x];\r\n                arr&#91;x] = arr&#91;y];\r\n                arr&#91;y] = temp;\r\n            }\r\n\r\n            return new String(arr);\r\n        }\r\n\r\n        return null;\r\n    }\r\n\r\n    \/\/\u65b9\u5f0f\u4e8c\uff1a\u4f7f\u7528String\u7684\u62fc\u63a5\r\n    public String reverse1(String str, int startIndex, int endIndex){\r\n        if(str != null){\r\n            \/\/\u7b2c1\u90e8\u5206\r\n            String reverseStr = str.substring(0,startIndex);\r\n            \/\/\u7b2c2\u90e8\u5206\r\n            for (int i = endIndex; i >= startIndex; i--){\r\n                reverseStr += str.charAt(i);\r\n            }\r\n            \/\/\u7b2c3\u90e8\u5206\r\n            reverseStr += str.substring(endIndex + 1);\r\n\r\n            return  reverseStr;\r\n\r\n        }\r\n\r\n        return null;\r\n    }\r\n\r\n    \/\/\u65b9\u5f0f\u4e09\uff1a\u4f7f\u7528StringBuffer\/StringBuilder\u66ff\u6362String\r\n    public String reverse2(String str, int startIndex, int endIndex) {\r\n        if (str != null) {\r\n            StringBuilder builder = new StringBuilder(str.length());\r\n\r\n            \/\/\u7b2c1\u90e8\u5206\r\n            builder.append(str.substring(0, startIndex));\r\n\r\n            \/\/\u7b2c2\u90e8\u5206\r\n            for (int i = endIndex; i >= startIndex; i--) {\r\n                builder.append(str.charAt(i));\r\n            }\r\n\r\n            \/\/\u7b2c3\u90e8\u5206\r\n            builder.append(str.substring(endIndex + 1));\r\n\r\n            return builder.toString();\r\n        }\r\n\r\n        return null;\r\n    }\r\n\r\n    @Test\r\n    public void testReverse(){\r\n        String str = \"abcdefg\";\r\n        String reverse = reverse(str, 2, 5);\r\n        String reverse1 = reverse1(str, 2, 5);\r\n        String reverse2 = reverse2(str, 2, 5);\r\n        System.out.println(reverse);\r\n        System.out.println(reverse1);\r\n        System.out.println(reverse2);\r\n    }\r\n}\r\n<\/code><\/pre>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[46],"class_list":["post-1116","post","type-post","status-publish","format-standard","hentry","category-java-code","tag-java"],"_links":{"self":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/1116"}],"collection":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1116"}],"version-history":[{"count":1,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/1116\/revisions"}],"predecessor-version":[{"id":1117,"href":"https:\/\/qaqaq.top\/index.php?rest_route=\/wp\/v2\/posts\/1116\/revisions\/1117"}],"wp:attachment":[{"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1116"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1116"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/qaqaq.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1116"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}