{"id":36927,"date":"2024-11-26T13:53:06","date_gmt":"2024-11-26T05:53:06","guid":{"rendered":"https:\/\/fwq.ai\/blog\/36927\/"},"modified":"2024-11-26T13:53:06","modified_gmt":"2024-11-26T05:53:06","slug":"java%e6%80%8e%e4%b9%88%e5%8f%96%e6%95%b0%e7%bb%84%e4%b8%ad%e9%97%b4","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/36927\/","title":{"rendered":"java\u600e\u4e48\u53d6\u6570\u7ec4\u4e2d\u95f4"},"content":{"rendered":"

\n \u5947\u6570\u957f\u5ea6\u6570\u7ec4\u7684\u4e2d\u95f4\u5143\u7d20\u4f4d\u4e8e\u7d22\u5f15\u4e3a arraylength \/ 2\uff0c\u5076\u6570\u957f\u5ea6\u6570\u7ec4\u7684\u4e2d\u95f4\u5143\u7d20\u4e3a\u4e24\u4e2a\u4e2d\u95f4\u5143\u7d20\uff08\u7d22\u5f15\u4e3a arraylength \/ 2 \u548c arraylength \/ 2 – 1\uff09\u7684\u5e73\u5747\u503c\u3002\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u53d6\u6570\u7ec4\u4e2d\u95f4\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u83b7\u53d6\u6570\u7ec4\u7684\u4e2d\u95f4\u5143\u7d20\uff1f<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u83b7\u53d6\u6570\u7ec4\u4e2d\u95f4\u5143\u7d20\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u6570\u7ec4\u7684\u957f\u5ea6\u662f\u5947\u6570\u8fd8\u662f\u5076\u6570\u3002<\/p>\n

\u5947\u6570\u957f\u5ea6\u6570\u7ec4\uff1a<\/strong><\/p>\n

\u5bf9\u4e8e\u957f\u5ea6\u4e3a\u5947\u6570\u7684\u6570\u7ec4\uff0c\u4e2d\u95f4\u5143\u7d20\u4f4d\u4e8e\u7d22\u5f15\u4e3a arrayLength \/ 2 \u7684\u4f4d\u7f6e\u3002\u4f8b\u5982\uff1a<\/p>\n

\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n

int[] arr = {1, 2, 3, 4, 5};\nint middleElement = arr[arr.length \/ 2]; \/\/ 3<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5076\u6570\u957f\u5ea6\u6570\u7ec4\uff1a<\/strong><\/p>\n
\u5bf9\u4e8e\u957f\u5ea6\u4e3a\u5076\u6570\u7684\u6570\u7ec4\uff0c\u4e2d\u95f4\u5143\u7d20\u4e0d\u5b58\u5728\u3002\u4f46\u662f\uff0c\u53ef\u4ee5\u627e\u5230\u4e24\u4e2a\u4e2d\u95f4\u5143\u7d20\u5e76\u6c42\u5176\u5e73\u5747\u503c\u3002\u4e2d\u95f4\u5143\u7d20\u4f4d\u4e8e\u7d22\u5f15 arrayLength \/ 2 \u548c arrayLength \/ 2 – 1 \u7684\u4f4d\u7f6e\u3002\u4f8b\u5982\uff1a<\/p>\n
int[] arr = {1, 2, 3, 4};\nint middleElement1 = arr[arr.length \/ 2]; \/\/ 3\nint middleElement2 = arr[arr.length \/ 2 - 1]; \/\/ 2\ndouble average = (middleElement1 + middleElement2) \/ 2.0; \/\/ 2.5<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4ee3\u7801\u793a\u4f8b\uff1a<\/strong><\/p>\n
import java.util.Arrays;\n\npublic class MiddleElement {\n\n    public static void main(String[] args) {\n        int[] arr1 = {1, 2, 3, 4, 5};\n        int[] arr2 = {1, 2, 3, 4};\n\n        System.out.println(\"\u5947\u6570\u957f\u5ea6\u6570\u7ec4\uff1a\" + Arrays.toString(arr1));\n        System.out.println(\"\u4e2d\u95f4\u5143\u7d20\uff1a\" + findMiddleElement(arr1)); \/\/ 3\n\n        System.out.println(\"\u5076\u6570\u957f\u5ea6\u6570\u7ec4\uff1a\" + Arrays.toString(arr2));\n        System.out.println(\"\u4e2d\u95f4\u5143\u7d20\uff1a\" + findMiddleElement(arr2)); \/\/ 2.5\n    }\n\n    public static int findMiddleElement(int[] arr) {\n        if (arr.length % 2 == 1) {\n            return arr[arr.length \/ 2];\n        } else {\n            return (arr[arr.length \/ 2] + arr[arr.length \/ 2 - 1]) \/ 2;\n        }\n    }\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u53d6\u6570\u7ec4\u4e2d\u95f4\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5947\u6570\u957f\u5ea6\u6570\u7ec4\u7684\u4e2d\u95f4\u5143\u7d20\u4f4d\u4e8e\u7d22\u5f15\u4e3a arraylength \/ 2\uff0c\u5076\u6570\u957f\u5ea6\u6570\u7ec4\u7684\u4e2d\u95f4\u5143\u7d20\u4e3a\u4e24\u4e2a\u4e2d\u95f4\u5143\u7d20\uff08\u7d22\u5f15\u4e3a arraylength \/ 2 \u548c arraylength \/ 2 – 1\uff09\u7684\u5e73\u5747\u503c\u3002 \u5982\u4f55\u83b7\u53d6\u6570\u7ec4\u7684\u4e2d\u95f4\u5143\u7d20\uff1f \u5728 Java \u4e2d\uff0c\u83b7\u53d6\u6570\u7ec4\u4e2d\u95f4\u5143\u7d20\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u6570\u7ec4\u7684\u957f\u5ea6\u662f\u5947\u6570\u8fd8\u662f\u5076\u6570\u3002 \u5947\u6570\u957f\u5ea6\u6570\u7ec4\uff1a \u5bf9\u4e8e\u957f\u5ea6\u4e3a\u5947\u6570\u7684\u6570\u7ec4\uff0c\u4e2d\u95f4\u5143\u7d20\u4f4d\u4e8e\u7d22\u5f15\u4e3a arrayLength \/ 2 \u7684\u4f4d\u7f6e\u3002\u4f8b\u5982\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b int[] arr = {1, 2, 3, 4, 5}; int middleElement = arr[arr.length \/ 2]; \/\/ 3 \u767b\u5f55\u540e\u590d\u5236 \u5076\u6570\u957f\u5ea6\u6570\u7ec4\uff1a \u5bf9\u4e8e\u957f\u5ea6\u4e3a\u5076\u6570\u7684\u6570\u7ec4\uff0c\u4e2d\u95f4\u5143\u7d20\u4e0d\u5b58\u5728\u3002\u4f46\u662f\uff0c\u53ef\u4ee5\u627e\u5230\u4e24\u4e2a\u4e2d\u95f4\u5143\u7d20\u5e76\u6c42\u5176\u5e73\u5747\u503c\u3002\u4e2d\u95f4\u5143\u7d20\u4f4d\u4e8e\u7d22\u5f15 arrayLength \/ 2 \u548c arrayLength \/ 2 – 1 \u7684\u4f4d\u7f6e\u3002\u4f8b\u5982\uff1a int[] arr […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-36927","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36927","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=36927"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/36927\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=36927"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=36927"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=36927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}