{"id":792,"date":"2022-03-21T12:40:13","date_gmt":"2022-03-21T04:40:13","guid":{"rendered":"https:\/\/axinyi.xuenixiang.com\/?p=792"},"modified":"2022-03-21T12:52:50","modified_gmt":"2022-03-21T04:52:50","slug":"javase-5","status":"publish","type":"post","link":"https:\/\/axinyi.xuenixiang.com\/index.php\/2022\/03\/21\/javase-5\/","title":{"rendered":"JavaSE-\u7b2c\u4e94\u7ae0"},"content":{"rendered":"\n<p><div class=\"has-toc have-toc\"><\/div><\/p>\n\n\n\n<h1>\u7b2c\u4e94\u7ae0 \u6570\u7ec4<\/h1>\n\n\n\n<h2>5.1 \u6570\u7ec4\u6982\u8981<\/h2>\n\n\n\n<ul><li>\u6570\u7ec4\u662f\u4e00\u79cd\u5f15\u7528\u7c7b\u578b\uff0c\u5185\u5b58\u7684\u793a\u610f\u56fe\uff1a<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"523\" height=\"491\" src=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-37.png\" alt=\"\" class=\"wp-image-793\" srcset=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-37.png 523w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-37-300x282.png 300w\" sizes=\"(max-width: 523px) 100vw, 523px\" \/><\/figure>\n\n\n\n<ul><li>\u6570\u7ec4\u662f\u4e00\u7ec4\u6570\u636e\u7684\u96c6\u5408<\/li><li>\u6570\u7ec4\u4f5c\u4e3a\u5f15\u7528\u7c7b\u578b<\/li><li>\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u53ef\u4ee5\u662f\"\u57fa\u672c\u7c7b\u578b\"\uff0c\u4e5f\u53ef\u4ee5\u662f\"\u5f15\u7528\u7c7b\u578b\"\uff0c\u4f46\u662f\uff0c\u5fc5\u987b\u662f\u540c\u4e00\u79cd\u7c7b\u578b<\/li><li>\u6570\u7ec4\u7684\u957f\u5ea6(\u5143\u7d20\u7684\u4e2a\u6570)\u662f\u4e00\u4e2a\u5c5e\u6027\u8868\u793a\u7684\uff0clength\u8868\u793a\u7684\u5c31\u662f\u957f\u5ea6<\/li><li>\u6570\u7ec4\u7684\u957f\u5ea6\u4e00\u65e6\u786e\u5b9a\u540e\uff0c\u5c31\u65e0\u6cd5\u4fee\u6539\u4e86<\/li><li>\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u662f\u6709\u4e0b\u6807\u7684\uff0c\u5e76\u4e14\u4ece0\u5f00\u59cb\uff0c\u6700\u5927\u7684\u4e0b\u6807\u503c\u662flength-1<\/li><\/ul>\n\n\n\n<h2>5.2 \u4e00\u7ef4\u6570\u7ec4\u7684\u521b\u5efa\u548c\u4f7f\u7528<\/h2>\n\n\n\n<h3>5.2.1 \u521b\u5efa\u4e00\u7ef4\u6570\u7ec4<\/h3>\n\n\n\n<h4>5.2.1.1 \u7b2c\u4e00\u79cd(\u63a8\u8350\uff09\uff1aint[] arr = new int[2];<\/h4>\n\n\n\n<h4>5.2.1.2 \u7b2c\u4e8c\u79cd\uff1aint arr[] = new int[2];<\/h4>\n\n\n\n<h4>5.2.1.3 \u52a8\u6001\u521b\u5efa\u6570\u7ec4\u548c\u9759\u6001\u521b\u5efa\u6570\u7ec4<\/h4>\n\n\n\n<h5>5.2.1.3.1 \u52a8\u6001\u521b\u5efa\u6570\u7ec4<\/h5>\n\n\n\n<ul><li>\u52a8\u6001\u521b\u5efa\u6570\u7ec4\uff1a\u9ed8\u8ba4\u5728\u5806\u4e2d\u5f00\u8f9f\u4e863\u4e2a\u4f4d\u7f6e\u5e76\u4e14\uff0c\u9ed8\u8ba4\u5143\u7d20\u7684\u503c\u5c31\u662f\u8be5\u7c7b\u578b\u7684\u9ed8\u8ba4\u503c<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"819\" height=\"211\" src=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-38.png\" alt=\"\" class=\"wp-image-794\" srcset=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-38.png 819w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-38-300x77.png 300w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-38-768x198.png 768w\" sizes=\"(max-width: 819px) 100vw, 819px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"906\" height=\"213\" src=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-39.png\" alt=\"\" class=\"wp-image-795\" srcset=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-39.png 906w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-39-300x71.png 300w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-39-768x181.png 768w\" sizes=\"(max-width: 906px) 100vw, 906px\" \/><\/figure>\n\n\n\n<ul><li>\u53ef\u4ee5\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\u6309\u7167\u4e0b\u6807\u6dfb\u52a0\u5bf9\u5e94\u7684\u6570\u636e\u5143\u7d20<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"898\" height=\"349\" src=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-40.png\" alt=\"\" class=\"wp-image-796\" srcset=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-40.png 898w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-40-300x117.png 300w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-40-768x298.png 768w\" sizes=\"(max-width: 898px) 100vw, 898px\" \/><\/figure>\n\n\n\n<ul><li>\u53ef\u4ee5\u901a\u8fc7\u5faa\u73af\u7684\u65b9\u5f0f\u83b7\u53d6\u5143\u7d20<ul><li>\u6848\u4f8b1\uff1a<\/li><\/ul><\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>public class A {\n    public static void main(String&#91;] args) {\n        \/\/\u52a8\u6001\u521b\u5efa\u6570\u7ec4\n        String&#91;] arr = new String&#91;3];\n        \/\/\u6309\u7167\u4e0b\u6807\n        arr&#91;0] = \"a\";\n        arr&#91;1] = \"b\";\n        arr&#91;2] = \"c\";\n        \/\/\u5faa\u73af\u83b7\u53d6\u5143\u7d20\u503c\n        for (int index = 0; index &lt; arr.length; index++) {\n            System.out.println(arr&#91;index]);\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<div class=\"wp-block-group\"><div class=\"wp-block-group__inner-container\">\n<ul><li>[null]<ul><li>\u6848\u4f8b2\uff1a\u4e0d\u5173\u5fc3\u5143\u7d20\u7684\u4e0b\u6807<\/li><\/ul><\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>public class A {\n    public static void main(String&#91;] args) {\n        \/\/\u52a8\u6001\u521b\u5efa\u6570\u7ec4\n        String&#91;] arr = new String&#91;3];\n        \/\/\u6309\u7167\u4e0b\u6807\n        arr&#91;0] = \"a\";\n        arr&#91;1] = \"b\";\n        arr&#91;2] = \"c\";\n        \/\/\u5faa\u73af\u83b7\u53d6\u5143\u7d20\u503c\n        for (String element : arr) {\n            System.out.println(element);\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<ul><li>[null]<ul><li>\u6848\u4f8b3\uff1alambda\u51fd\u6570\u7684\u65b9\u5f0f<\/li><\/ul><\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>public class A {\n    public static void main(String&#91;] args) {\n        \/\/\u52a8\u6001\u521b\u5efa\u6570\u7ec4\n        String&#91;] arr = new String&#91;3];\n        \/\/\u6309\u7167\u4e0b\u6807\n        arr&#91;0] = \"a\";\n        arr&#91;1] = \"b\";\n        arr&#91;2] = \"c\";\n        \/\/\u5faa\u73af\u83b7\u53d6\u5143\u7d20\u503c\n        Arrays.stream(arr).forEach(System.out::println);\n    }\n}<\/code><\/pre>\n<\/div><\/div>\n\n\n\n<ul><li>\u5fc5\u987b\u6ce8\u610f\u5143\u7d20\u7684\u4e0b\u6807\uff0c\u56e0\u4e3a\uff0c\u4f1a\u51fa\u73b0\u4e00\u4e2a<strong>\u8fd0\u884c\u671f\u7684\u5f02\u5e38<\/strong>\uff1a\u4e0b\u6807\u8d8a\u754c<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"480\" src=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-41-1024x480.png\" alt=\"\" class=\"wp-image-797\" srcset=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-41-1024x480.png 1024w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-41-300x141.png 300w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-41-768x360.png 768w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-41.png 1494w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h5>5.2.1.3.2 \u9759\u6001\u521b\u5efa\u6570\u7ec4<\/h5>\n\n\n\n<ul><li>\u5c31\u662f\u521d\u59cb\u5316\u7684\u65f6\u5019\u5c31\u662f\u628a\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u6709\u9ed8\u8ba4\u503c\u6dfb\u52a0\u4e3a\u6307\u5b9a\u7684\u6570\u503c\u4e86<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>public class A {\n    public static void main(String&#91;] args) {\n        \/\/\u9759\u6001\u521b\u5efa\u6570\u7ec4\n        int&#91;] array = {1,2,3,4,5};\n        \/\/\u8f93\u51fa\n        for (int index = 0; index &lt; array.length; index++) {\n            System.out.println(array&#91;index]);\n        }\n\n    }\n}<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>import java.util.Arrays;\n\npublic class A {\n    public static void main(String&#91;] args) {\n        \/\/\u9759\u6001\u521b\u5efa\u6570\u7ec4\n        String&#91;] array = {\"\u5973\",\"\u8db3\",\"\u725b\"};\n        \/\/\u8f93\u51fa\n        Arrays.stream(array).forEach(System.out::println);\n\n    }\n}<\/code><\/pre>\n\n\n\n<h2>5.3 \u4e8c\u7ef4\u6570\u7ec4\u7684\u521b\u5efa\u548c\u4f7f\u7528<\/h2>\n\n\n\n<ul><li>\u4e8c\u7ef4\u6570\u7ec4\u5c31\u662f\u4e24\u4e2a\u4e00\u7ef4\u6570\u7ec4<\/li><\/ul>\n\n\n\n<h3>5.3.1 \u58f0\u660e\u65b9\u5f0f\uff1a<\/h3>\n\n\n\n<ul><li>\u5728\u7c7b\u578b\u7684\u540e\u9762\u6dfb\u52a0\u4e2d\u62ec\u53f7<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>public class A {\n    public static void main(String&#91;] args) {\n        int&#91;]&#91;] array = new int&#91;2]&#91;3];\n    }\n}<\/code><\/pre>\n\n\n\n<ul><li>\u5728\u53c2\u6570\u7684\u540e\u9762\u6dfb\u52a0\u4e2d\u62ec\u53f7<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>public class A {\n    public static void main(String&#91;] args) {\n        int array&#91;]&#91;] = new int&#91;2]&#91;3];\n    }\n}<\/code><\/pre>\n\n\n\n<ul><li>\u6269\u5c55<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>public class A {\n    public static void main(String&#91;] args) {\n        int&#91;] array&#91;] = new int&#91;2]&#91;3];\n    }\n}<\/code><\/pre>\n\n\n\n<h3>5.3.2 \u52a8\u6001\u521b\u5efa\u4e8c\u7ef4\u6570\u7ec4<\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"326\" src=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-42-1024x326.png\" alt=\"\" class=\"wp-image-798\" srcset=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-42-1024x326.png 1024w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-42-300x95.png 300w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-42-768x244.png 768w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-42.png 1314w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"317\" src=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-43-1024x317.png\" alt=\"\" class=\"wp-image-799\" srcset=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-43-1024x317.png 1024w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-43-300x93.png 300w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-43-768x238.png 768w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-43.png 1358w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3>5.3.3 \u5faa\u73af\u83b7\u53d6\u5143\u7d20<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>public class A {\n    public static void main(String&#91;] args) {\n        \/\/\u52a8\u6001\u521b\u5efa\u4e8c\u7ef4\u6570\u7ec4\uff1a2\u884c3\u5217\n        int&#91;] array&#91;] = new int&#91;2]&#91;3];\n        \/\/\u6dfb\u52a0\u5143\u7d20\n        array&#91;0]&#91;0] = 1;\n        array&#91;0]&#91;1] = 2;\n        array&#91;0]&#91;2] = 3;\n\n        array&#91;1]&#91;0] = 4;\n        array&#91;1]&#91;1] = 5;\n        array&#91;1]&#91;2] = 6;\n\n        \/\/\u901a\u8fc7\u5d4c\u5957\u5faa\u73af\u83b7\u53d6\u5143\u7d20\n        for (int rows = 0; rows &lt; array.length; rows++) {\n            for (int cols=0;cols&lt;array&#91;rows].length;cols++){\n                System.out.println(\"array&#91;\"+rows+\"]&#91;\"+cols+\"]=\"+array&#91;rows]&#91;cols]);\n            }\n        }\n\n    }\n}<\/code><\/pre>\n\n\n\n<h3>5.3.4 \u9ad8\u7ef4\u521b\u5efa\u4e8c\u7ef4\u6570\u7ec4<\/h3>\n\n\n\n<h4>5.3.4.1 \u9759\u6001\u65b9\u5f0f\u521b\u5efa<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>public class A {\n    public static void main(String&#91;] args) {\n        int&#91;]&#91;] array = {{1}, {2,3}, {4,5,6}};\n        \/\/\u904d\u5386\n        for (int rows = 0; rows &lt; array.length; rows++){\n            for (int cols = 0;cols &lt; array&#91;rows].length; cols++){\n                System.out.println(\"array&#91;\"+rows+\"]&#91;\"+cols+\"]=\"+array&#91;rows]&#91;cols]);\n            }\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<h4>5.3.4.2 \u52a8\u6001\u65b9\u5f0f\u521b\u5efa<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>public class A {\n    public static void main(String&#91;] args) {\n        \/\/\u9ad8\u4f4d\u521b\u5efa\uff0c\u53ef\u4ee5\u4e0d\u786e\u5b9a\u5217\u6570\n        int&#91;]&#91;] array = new int&#91;3]&#91;];\n\n        \/\/\u5728\u4f7f\u7528\u5143\u7d20\u65f6\uff0c\u5fc5\u987b\u521b\u5efa\u51fa\u6765\u4e86\n        array&#91;0] = new int&#91;2];\n        array&#91;0]&#91;0] = 1;\n        array&#91;0]&#91;1] = 2;\n\n        array&#91;1] = new int&#91;3];\n        array&#91;1]&#91;0] = 3;\n        array&#91;1]&#91;1] = 4;\n        array&#91;1]&#91;2] = 5;\n\n        array&#91;2] = new int&#91;1];\n        array&#91;2]&#91;0] = 6;\n\n        \/\/\u904d\u5386\n        for (int rows = 0; rows &lt; array.length; rows++){\n            for (int cols = 0;cols &lt; array&#91;rows].length; cols++){\n                System.out.println(\"array&#91;\"+rows+\"]&#91;\"+cols+\"]=\"+array&#91;rows]&#91;cols]);\n            }\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" width=\"965\" height=\"231\" src=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-44.png\" alt=\"\" class=\"wp-image-800\" srcset=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-44.png 965w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-44-300x72.png 300w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-44-768x184.png 768w\" sizes=\"(max-width: 965px) 100vw, 965px\" \/><\/figure>\n\n\n\n<h2>5.4 \u6570\u7ec4\u7684\u6392\u5e8f<\/h2>\n\n\n\n<h3>5.4.1 \u5192\u6ce1\u6392\u5e8f<\/h3>\n\n\n\n<ul><li>\u6848\u4f8b\uff1a\u5bf93\uff0c1\uff0c6\uff0c2\uff0c5\u8fdb\u884c\u6392\u5e8f<ul><li>\u5de6\u8fb9\u548c\u53f3\u8fb9\u4e24\u4e2a\u76f8\u90bb\u7684\u6570\u636e\u8fdb\u884c\u6bd4\u8f83<\/li><li>\u5982\u679c\u53f3\u8fb9\u7684\u5c0f\u4e8e\u5de6\u8fb9\u7684\u6570\u636e\u90a3\u4e48\u8fdb\u884c\u4e00\u6b21\u4ea4\u6362<\/li><li>\u5982\u679c\u53f3\u8fb9\u7684\u5927\u4e8e\u5de6\u8fb9\u7684\u6570\u636e\u90a3\u4e48\u4e0d\u8fdb\u884c\u4e00\u6b21\u4ea4\u6362<\/li><li>\u516c\u5f0f\uff1a<ul><li>\u53ef\u4ee5\u770b\u5230\u6bd4\u8f83\u4e86n-1\u6b21\uff0c\u90a3\u4e48\u7b2c\u4e8c\u904dn-2\uff0c\u4ee5\u6b64\u7c7b\u63a8<\/li><li>(n-1)+(n-2)+...=((n-1)*n)\/2<\/li><li>\u6240\u4ee5\u5bf9\u4e0a\u9762\u7684\u6570\u636e\u8fdb\u884c\u6392\u5e8f\u7684\u6b21\u6570(\u6bd4\u8f83\u6b21\u6570)\uff1a((5-1)*5)\/2=10<\/li><li>\u6bd4\u8f83\u7684\u6b21\u6570\u79f0\u4e3a\u65f6\u95f4\u590d\u6742\u5ea6(10)\uff0c\u4e34\u65f6\u4f7f\u7528\u7684\u53d8\u91cf\u79f0\u4e3a\u7a7a\u95f4\u590d\u6742\u5ea6(1)<\/li><\/ul>\u7b2c\u4e00\u904d\u6bd4\u8f83\u7684\u793a\u610f\u56fe\uff1a<\/li><\/ul><\/li><\/ul>\n\n\n\n<p>\u7b2c\u4e00\u904d\u6bd4\u8f83\u7684\u793a\u610f\u56fe<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"363\" src=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-45-1024x363.png\" alt=\"\" class=\"wp-image-801\" srcset=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-45-1024x363.png 1024w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-45-300x106.png 300w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-45-768x272.png 768w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-45.png 1100w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<ul><li>\u5192\u6ce1\u6392\u5e8f\u7f16\u7801\u6848\u4f8b<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>public class A {\n    public static void main(String&#91;] args) {\n        \/\/\u521b\u5efa\u6570\u7ec4\n        int&#91;] array = {3,1,6,2,5};\n        \/\/\u5faa\u73af\u6bd4\u8f83\n        for (int i = array.length - 1; i &gt; 0; i--) {\n            for (int j=0;j&lt;i;j++){\n                \/\/\u5224\u65ad\n                if (array&#91;j]&gt;array&#91;j+1]){\n                    \/\/\u5fc5\u987b\u4f7f\u7528\u4e00\u4e2a\u4e34\u65f6\u53d8\u91cf\u4fdd\u5b58\u4e00\u4e2aj\u4f4d\u7f6e\u7684\u5143\u7d20\n                    int temp = array&#91;j];\n                    \/\/\u4ea4\u6362\u4f4d\u7f6e\n                    array&#91;j] = array&#91;j+1];\n                    array&#91;j+1] = temp;\n                }\n            }\n        }\n        \/\/\u8f93\u51fa\u6392\u5e8f\u540e\u7684\u5143\u7d20\n        for (int index = 0; index &lt; array.length; index++) {\n            System.out.println(array&#91;index]);\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<h3>5.4.2 \u9009\u62e9\u6392\u5e8f<\/h3>\n\n\n\n<ul><li>\u9009\u62e9\u6392\u5e8f\u5bf9\u5192\u6ce1\u6392\u5e8f\u8fdb\u884c\u6539\u8fdb\uff1a\u4f7f\u4ea4\u6362\u6b21\u6570\u51cf\u5c11\u4e86\uff0c\u4f46\u662f\uff0c\u6bd4\u8f83\u7684\u6b21\u6570\u6ca1\u6709\u51cf\u5c11<\/li><li>\u539f\u7406\uff1a\u627e\u5230\u4e00\u4e2a\u5143\u7d20\u540e\u4f9d\u6b21\u4e0e\u540e\u9762\u7684\u5143\u7d20\u6bd4\u8f83\uff0c\u627e\u5230\u6700\u5c0f\u7684\u5143\u7d20\u653e\u5230\u524d\u9762<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"431\" src=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-46-1024x431.png\" alt=\"\" class=\"wp-image-802\" srcset=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-46-1024x431.png 1024w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-46-300x126.png 300w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-46-768x323.png 768w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-46.png 1110w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<ul><li>\u6848\u4f8b\u4ee3\u7801<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>public class A {\n    public static void main(String&#91;] args) {\n        \/\/\u521b\u5efa\u6570\u7ec4\n        int&#91;] array = {3,10,6,2,5,1};\n        \/\/\u5faa\u73af\u6bd4\u8f83:\u9009\u62e9\u6392\u5e8f\u7684\u65b9\u5f0f\n        for (int i = 0; i &lt; array.length; i++) {\n            \/\/\u8bbe\u7f6e\u4e00\u4e2a\u6700\u5c0f\u7684\u4e0b\u6807\u503c\uff0c\u83b7\u53d6\u8be5\u5143\u7d20\n            int min = i;\n            \/\/\u5faa\u73af\u83b7\u53d6\u6700\u5c0f\u7684\u5143\u7d20\n            for (int j=i+1;j&lt; array.length;j++){\n                \/\/\u5224\u65ad\u6bd4\u8f83\u7684\u7ed3\u679c\n                if (array&#91;i]&lt;array&#91;min]) {\n                    \/\/\u66f4\u6362\u6700\u5c0f\u7684\u5143\u7d20\u5bf9\u5e94\u7684\u4e0b\u6807\n                    min = j;\n                }\n            }\n            \/\/\u627e\u5230\u6700\u5c0f\u7684\u5143\u7d20\u540e\u4ea4\u6362\u4f4d\u7f6e\n            if (min!=i){\n                int temp = array&#91;i];\n                array&#91;i] = array&#91;min];\n                array&#91;min] = temp;\n            }\n        }\n        \/\/\u8f93\u51fa\u6392\u5e8f\u540e\u7684\u5143\u7d20\n        for (int index = 0; index &lt; array.length; index++) {\n            System.out.println(array&#91;index]);\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<h2>5.5 \u6570\u7ec4\u7684\u641c\u7d22\u65b9\u5f0f<\/h2>\n\n\n\n<h3>5.5.1 \u4e8c\u5206\u6cd5(\u6298\u534a\u6cd5)<\/h3>\n\n\n\n<ul><li>\u5728\u4f7f\u7528\u4e8c\u5206\u6cd5\u65f6\uff0c\u6570\u7ec4\u5fc5\u987b\u5df2\u7ecf\u6392\u5e8f\u4e86<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" width=\"1024\" height=\"94\" src=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-47-1024x94.png\" alt=\"\" class=\"wp-image-803\" srcset=\"https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-47-1024x94.png 1024w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-47-300x28.png 300w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-47-768x70.png 768w, https:\/\/axinyi.xuenixiang.com\/wp-content\/uploads\/2022\/03\/\u56fe\u7247-47.png 1396w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<ul><li>\u5c31\u662f\u628a\u6700\u5c0f\u4e0b\u6807+\u6700\u5927\u4e0b\u6807\u6c42\u548c\u540e\u96642\uff0c\u5c31\u53ef\u4ee5\u5224\u65ad\u9700\u8981\u7684\u6570\u636e\u662f\u5728\u524d\u4e00\u534a\u8fd8\u662f\u540e\u4e00\u534a<\/li><li>\u6848\u4f8b\u4ee3\u7801\uff1a<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>public class A {\n    public static void main(String&#91;] args) {\n        \/\/\u521b\u5efa\u6570\u7ec4\n        int&#91;] array = {11,12,13,14,15,16,17,18,19,20};\n        \/\/\u4f7f\u7528\u6298\u534a\u65b9\u6cd5\n        int index = binarySearch(array, 19);\n        System.out.println(index);\n    }\n    \/\/\u9700\u8981\u7f16\u5199\u4e00\u4e2a\u6298\u534a\u67e5\u627e\u6570\u636e\u7684\u65b9\u6cd5:\u83b7\u53d6\u4e0b\u6807\u7684\u503c\n    public static int binarySearch(int&#91;] array,int value){\n        \/\/\u5f00\u59cb\u7684\u4e0b\u6807\n        int begin = 0;\n        \/\/\u7ed3\u675f\u7684\u4e0b\u6807\n        int end = array.length-1;\n        \/\/\u5faa\u73af\n        while (begin &lt;= end) {\n            \/\/\u6298\u534a\n            int mid = (begin+end)\/2;\n            \/\/\u5224\u65ad\n            if (value==array&#91;mid]) {\n                return mid;\n            }else if (value&gt;array&#91;mid]){\n                \/\/\u5f00\u59cb\u7684\u4e0b\u6807\u662f\u6709\u53d8\u5316\u7684\n                begin = mid+1;\n            }else if (value&lt;array&#91;mid]){\n                end = mid-1;\n            }\n        }\n        return -1;\n    }\n}<\/code><\/pre>\n\n\n\n<h3>5.5.2 \u7b14\u8bd5\u9898<\/h3>\n\n\n\n<ul><li>10\u4e07\u74f6\u6c34\uff0c\u5176\u4e2d\u6709\u4e00\u74f6\u6709\u6bd2\uff0c\u73b0\u5728\u7ed9\u4f6010\u53ea\u5c0f\u5f3a(\u87d1\u8782)\uff0c\u5982\u679c\u5c0f\u5f3a\u559d\u4e86\u6709\u6bd2\u7684\u6c34\u540e3\u79d2\u6b7b\u4ea1\uff0c\u95ee\u5982\u4f55\u627e\u5230\u8fd9\u74f6\u6c34\uff1f<\/li><li>\u7b54\uff1a\u4f7f\u7528\u6298\u534a+\u63a8\u7b97<\/li><\/ul>\n\n\n\n<h2>5.6 Arrays\u5de5\u5177\u7c7b<\/h2>\n\n\n\n<h3>5.6.1 \u901a\u8fc7\u5de5\u5177\u7c7b\u5bf9\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>import java.util.Arrays;\n\npublic class A {\n    public static void main(String&#91;] args) {\n        \/\/\u521b\u5efa\u6570\u7ec4\n        int&#91;] array = {3,1,6,2,5};\n        \/\/\u5de5\u5177\u7c7b\u5bf9\u6570\u7ec4\u6392\u5e8f\n        Arrays.sort(array);\n\n        for (int i = 0; i &lt; array.length; i++) {\n            System.out.println(array&#91;i]);\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<h3>5.6.2 \u4f7f\u7528\u5de5\u5177\u7c7b\u5bf9\u6570\u7ec4\u8fdb\u884c\u4e8c\u5206\u6cd5<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>import java.util.Arrays;\n\npublic class A {\n    public static void main(String&#91;] args) {\n        \/\/\u521b\u5efa\u6570\u7ec4\n        int&#91;] array = {11,12,13,14,15,16,17,18,19,20};\n        \/\/\u67e5\u627e\u5143\u7d20\u5bf9\u5e94\u7684\u4e0b\u6807\n        int index = Arrays.binarySearch(array, 20);\n        System.out.println(index);\n    }\n}<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u7b2c\u4e94\u7ae0 \u6570\u7ec4 5.1 \u6570\u7ec4\u6982\u8981 \u6570\u7ec4\u662f\u4e00\u79cd\u5f15\u7528\u7c7b\u578b\uff0c\u5185\u5b58\u7684\u793a\u610f\u56fe\uff1a \u6570\u7ec4\u662f\u4e00\u7ec4\u6570\u636e\u7684\u96c6\u5408 \u6570\u7ec4\u4f5c\u4e3a\u5f15\u7528\u7c7b\u578b \u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u53ef\u4ee5\u662f&#8221;\u57fa &#823","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[10],"tags":[],"_links":{"self":[{"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/posts\/792"}],"collection":[{"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/comments?post=792"}],"version-history":[{"count":2,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/posts\/792\/revisions"}],"predecessor-version":[{"id":815,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/posts\/792\/revisions\/815"}],"wp:attachment":[{"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/media?parent=792"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/categories?post=792"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/axinyi.xuenixiang.com\/index.php\/wp-json\/wp\/v2\/tags?post=792"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}