{"id":39709,"date":"2024-11-26T13:51:43","date_gmt":"2024-11-26T05:51:43","guid":{"rendered":"https:\/\/fwq.ai\/blog\/39709\/"},"modified":"2024-11-26T13:51:43","modified_gmt":"2024-11-26T05:51:43","slug":"java%e6%80%8e%e4%b9%88%e8%b0%83%e7%94%a8%e6%88%91%e4%b9%8b%e5%89%8d%e7%94%9f%e6%88%90%e7%9a%84%e6%95%b0%e7%bb%84","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/39709\/","title":{"rendered":"java\u600e\u4e48\u8c03\u7528\u6211\u4e4b\u524d\u751f\u6210\u7684\u6570\u7ec4"},"content":{"rendered":"<blockquote><p>\n  \u4f7f\u7528 java \u8c03\u7528\u9884\u5148\u751f\u6210\u7684\u6570\u7ec4\u6b65\u9aa4\u5982\u4e0b\uff1a\u5bfc\u5165 java.util.arrays \u5e93\u3002\u521b\u5efa\u6216\u83b7\u53d6\u6570\u7ec4\u3002\u4f7f\u7528 myarray.length \u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\u3002\u4f7f\u7528 myarray[index] \u83b7\u53d6\u7279\u5b9a\u5143\u7d20\u3002\u4f7f\u7528 for \u5faa\u73af\u6216\u589e\u5f3a\u7684 for-each \u5faa\u73af\u8fed\u4ee3\u6570\u7ec4\u3002\u4f7f\u7528 arrays.sort(myarray) \u6392\u5e8f\u6570\u7ec4\u3002\u4f7f\u7528 arrays.binarysearch(myarray, searchkey) \u641c\u7d22\u6570\u7ec4\u3002\u63d0\u793a\uff1a\u6570\u7ec4\u7d22\u5f15\u4ece 0 \u5f00\u59cb\uff0c\u6570\u7ec4\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u8bbf\u95ee\u5143\u7d20\u65f6\u8fdb\u884c\u8fb9\u754c\u68c0\u67e5\u4ee5\u907f\u514d\u5f02\u5e38\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/16\/2024111622244880662.jpg\" class=\"aligncenter\" title=\"java\u600e\u4e48\u8c03\u7528\u6211\u4e4b\u524d\u751f\u6210\u7684\u6570\u7ec4\u63d2\u56fe\" alt=\"java\u600e\u4e48\u8c03\u7528\u6211\u4e4b\u524d\u751f\u6210\u7684\u6570\u7ec4\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u4f7f\u7528 Java \u8c03\u7528\u9884\u5148\u751f\u6210\u7684\u6570\u7ec4<\/strong><\/p>\n<p>\u4f7f\u7528 Java \u8c03\u7528\u9884\u5148\u751f\u6210\u7684\u6570\u7ec4\u975e\u5e38\u7b80\u5355\u3002\u4ee5\u4e0b\u662f\u5206\u6b65\u8bf4\u660e\uff1a<\/p>\n<p><strong>1. \u5bfc\u5165\u5fc5\u9700\u7684\u5e93<\/strong><\/p>\n<p>\u9996\u5148\uff0c\u60a8\u9700\u8981\u5bfc\u5165\u5305\u542b Array \u7c7b\u548c Arrays \u5b9e\u7528\u7a0b\u5e8f\u7c7b\u7684\u5e93\u3002<\/p>\n<p><span>\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n<pre>import java.util.Arrays;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u521b\u5efa\u6216\u83b7\u53d6\u6570\u7ec4<\/strong><\/p>\n<p>\u60a8\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\u6216\u4f7f\u7528\u73b0\u6709\u6570\u7ec4\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u521b\u5efa\u6570\u7ec4\u7684\u793a\u4f8b\uff1a<\/p>\n<pre>int[] myArray = {1, 2, 3, 4, 5};<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>3. \u8c03\u7528\u6570\u7ec4\u65b9\u6cd5<\/strong><\/p>\n<p>\u4e00\u65e6\u60a8\u6709\u4e86\u6570\u7ec4\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u8bbf\u95ee\u5176\u5185\u5bb9\uff1a<\/p>\n<ul>\n<li> <strong>\u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\uff1a<\/strong> myArray.length \u8fd4\u56de\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u6570\u3002<\/li>\n<li> <strong>\u83b7\u53d6\u7279\u5b9a\u5143\u7d20\uff1a<\/strong> myArray[index] \u8fd4\u56de\u6307\u5b9a\u7d22\u5f15\u5904\u7684\u5143\u7d20\u3002<\/li>\n<li> <strong>\u5faa\u73af\u904d\u5386\u6570\u7ec4\uff1a<\/strong> \u4f7f\u7528 for \u5faa\u73af\u6216\u589e\u5f3a\u7684 for-each \u5faa\u73af\u8fed\u4ee3\u6570\u7ec4\u4e2d\u7684\u6bcf\u4e2a\u5143\u7d20\u3002<\/li>\n<li> <strong>\u6392\u5e8f\u6570\u7ec4\uff1a<\/strong> Arrays.sort(myArray) \u6839\u636e\u81ea\u7136\u987a\u5e8f\u5bf9\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f\u3002<\/li>\n<li> <strong>\u641c\u7d22\u6570\u7ec4\uff1a<\/strong> Arrays.binarySearch(myArray, searchKey) \u4f7f\u7528\u4e8c\u8fdb\u5236\u641c\u7d22\u7b97\u6cd5\u5728\u6570\u7ec4\u4e2d\u641c\u7d22\u5143\u7d20\u3002<\/li>\n<\/ul>\n<p><strong>\u793a\u4f8b\uff1a<\/strong><\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u6570\u7ec4\u65b9\u6cd5\u7684\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n<pre>\/\/ \u521b\u5efa\u6570\u7ec4\nint[] myArray = {1, 2, 3, 4, 5};\n\n\/\/ \u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\nint length = myArray.length;\n\n\/\/ \u83b7\u53d6\u7279\u5b9a\u5143\u7d20\nint firstElement = myArray[0];\n\n\/\/ \u5faa\u73af\u904d\u5386\u6570\u7ec4\u5e76\u6253\u5370\u5143\u7d20\nfor (int element : myArray) {\n    System.out.println(element);\n}\n\n\/\/ \u6392\u5e8f\u6570\u7ec4\nArrays.sort(myArray);\n\n\/\/ \u641c\u7d22\u6570\u7ec4\nint searchResult = Arrays.binarySearch(myArray, 3);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u63d0\u793a\uff1a<\/strong><\/p>\n<ul>\n<li> <strong>\u6570\u7ec4\u7d22\u5f15\u4ece 0 \u5f00\u59cb\uff1a<\/strong>\u6570\u7ec4\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\u7684\u7d22\u5f15\u4e3a 0\u3002<\/li>\n<li> <strong>\u6570\u7ec4\u4e0d\u53ef\u53d8\uff1a<\/strong>Java \u4e2d\u7684\u6570\u7ec4\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u8fd9\u610f\u5473\u7740\u60a8\u4e0d\u80fd\u66f4\u6539\u6570\u7ec4\u7684\u5927\u5c0f\u6216\u5176\u5143\u7d20\u7684\u5185\u5bb9\u3002\u5982\u679c\u60a8\u9700\u8981\u53ef\u53d8\u5927\u5c0f\u7684\u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528 ArrayList\u3002<\/li>\n<li> <strong>\u8fb9\u754c\u68c0\u67e5\uff1a<\/strong>\u5728\u8bbf\u95ee\u6570\u7ec4\u5143\u7d20\u65f6\uff0c\u8bf7\u52a1\u5fc5\u8fdb\u884c\u8fb9\u754c\u68c0\u67e5\u4ee5\u907f\u514d ArrayIndexOutOfBoundsException \u5f02\u5e38\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u8c03\u7528\u6211\u4e4b\u524d\u751f\u6210\u7684\u6570\u7ec4\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":"<p>\u4f7f\u7528 java \u8c03\u7528\u9884\u5148\u751f\u6210\u7684\u6570\u7ec4\u6b65\u9aa4\u5982\u4e0b\uff1a\u5bfc\u5165 java.util.arrays \u5e93\u3002\u521b\u5efa\u6216\u83b7\u53d6\u6570\u7ec4\u3002\u4f7f\u7528 myarray.length \u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\u3002\u4f7f\u7528 myarray[index] \u83b7\u53d6\u7279\u5b9a\u5143\u7d20\u3002\u4f7f\u7528 for \u5faa\u73af\u6216\u589e\u5f3a\u7684 for-each \u5faa\u73af\u8fed\u4ee3\u6570\u7ec4\u3002\u4f7f\u7528 arrays.sort(myarray) \u6392\u5e8f\u6570\u7ec4\u3002\u4f7f\u7528 arrays.binarysearch(myarray, searchkey) \u641c\u7d22\u6570\u7ec4\u3002\u63d0\u793a\uff1a\u6570\u7ec4\u7d22\u5f15\u4ece 0 \u5f00\u59cb\uff0c\u6570\u7ec4\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u8bbf\u95ee\u5143\u7d20\u65f6\u8fdb\u884c\u8fb9\u754c\u68c0\u67e5\u4ee5\u907f\u514d\u5f02\u5e38\u3002 \u5982\u4f55\u4f7f\u7528 Java \u8c03\u7528\u9884\u5148\u751f\u6210\u7684\u6570\u7ec4 \u4f7f\u7528 Java \u8c03\u7528\u9884\u5148\u751f\u6210\u7684\u6570\u7ec4\u975e\u5e38\u7b80\u5355\u3002\u4ee5\u4e0b\u662f\u5206\u6b65\u8bf4\u660e\uff1a 1. \u5bfc\u5165\u5fc5\u9700\u7684\u5e93 \u9996\u5148\uff0c\u60a8\u9700\u8981\u5bfc\u5165\u5305\u542b Array \u7c7b\u548c Arrays \u5b9e\u7528\u7a0b\u5e8f\u7c7b\u7684\u5e93\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b import java.util.Arrays; \u767b\u5f55\u540e\u590d\u5236 2. \u521b\u5efa\u6216\u83b7\u53d6\u6570\u7ec4 \u60a8\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u65b0\u6570\u7ec4\u6216\u4f7f\u7528\u73b0\u6709\u6570\u7ec4\u3002\u4ee5\u4e0b\u662f\u5982\u4f55\u521b\u5efa\u6570\u7ec4\u7684\u793a\u4f8b\uff1a int[] myArray = {1, 2, 3, 4, 5}; \u767b\u5f55\u540e\u590d\u5236 3. \u8c03\u7528\u6570\u7ec4\u65b9\u6cd5 \u4e00\u65e6\u60a8\u6709\u4e86\u6570\u7ec4\uff0c\u5c31\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\u8bbf\u95ee\u5176\u5185\u5bb9\uff1a \u83b7\u53d6\u6570\u7ec4\u957f\u5ea6\uff1a myArray.length \u8fd4\u56de\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u6570\u3002 [&hellip;]<\/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-39709","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39709","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=39709"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/39709\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=39709"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=39709"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=39709"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}