{"id":45,"date":"2021-08-18T12:16:33","date_gmt":"2021-08-18T04:16:33","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/javav2\/?p=45"},"modified":"2021-08-18T22:33:52","modified_gmt":"2021-08-18T14:33:52","slug":"java%e5%86%92%e6%b3%a1%e6%8e%92%e5%ba%8f%e7%ae%97%e6%b3%95%e5%8f%8a%e5%85%b6%e4%bc%98%e5%8c%96","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/javav2\/post-45.html","title":{"rendered":"java\u5192\u6ce1\u6392\u5e8f\u7b97\u6cd5\u53ca\u5176\u4f18\u5316"},"content":{"rendered":"\n<p>\u5192\u6ce1\u6392\u5e8f\u662f\u5e38\u7528\u7684\u6392\u5e8f\u7b97\u6cd5\uff0c\u65f6\u95f4\u590d\u6742\u5ea6<\/p>\n\n\n\n<ul><li>\u6700\u574f\u60c5\u51b5\uff0c\u4e3aO(n\u00b2)<\/li><li>\u6700\u597d\u60c5\u51b5\uff0c\u4e3aO(n)<\/li><\/ul>\n\n\n\n<p>\u6b64\u5916\uff0c\u7a7a\u95f4\u590d\u6742\u5ea6O(1)\uff0c\u7a33\u5b9a<\/p>\n\n\n\n<h4>\u57fa\u672c\u601d\u60f3<\/h4>\n\n\n\n<p>\uff08\u8bbe k = n, \u8fd9\u91cc\u7684 n \u8868\u793a\u5e8f\u5217\u957f\u5ea6)<\/p>\n\n\n\n<p>\u4ece\u5de6\u4fa7\u7b2c\u4e00\u4e2a\u5143\u7d20\u5f00\u59cb\u5230n-1\u4e2a\u5143\u7d20\u7ed3\u675f\uff0c\u6bcf\u4e2a\u5143\u7d20\u4f9d\u6b21\u548c\u53f3\u4fa7\u76f8\u90bb\u5143\u7d20\u7ec4\u6210\u4e00\u5bf9<\/p>\n\n\n\n<p>\u4ece\u5de6\u5230\u53f3\u4f9d\u6b21\u6bd4\u8f83\u6bcf\u5bf9\u5143\u7d20\u7684\u503c\uff0c\u5982\u679c\u4e0d\u7b26\u5408\u6392\u5e8f\u89c4\u5219\uff0c\u5219\u5143\u7d20\u4ea4\u6362\uff0c\u76f4\u5230\u4ea4\u6362\u5b8c\u6700\u540e\u4e00\u5bf9\uff0c\u4ee5\u4e0a\u8fc7\u7a0b\u79f0\u4e3a\u4e00\u8d9f\u3002<\/p>\n\n\n\n<p>\u6bcf\u8d9f\u7ed3\u675f\u540e\uff0c\u6700\u540e\u4e00\u4e2a\u6709\u5e8f\uff0c\u53bb\u6389\u6700\u540e\u4e00\u4e2a( \u5373n=n-1)\uff0c\u7ee7\u7eed\u4e0b\u4e00\u8d9f\uff0c\u76f4\u5230n==1\u7ed3\u675f<\/p>\n\n\n\n<p>\uff08\u6613\u77e5\u9700\u8981 k-1 \u8d9f\uff09<\/p>\n\n\n\n<h4>\u4ee3\u7801\u5b9e\u73b0<\/h4>\n\n\n\n<p>\u5206\u6790\u6bcf\u8d9f\u9700\u8981\u51e0\u7ec4\uff1f<\/p>\n\n\n\n<p>\u7b2c\u4e00\u8d9f\u9700\u8981n-1\u7ec4\uff0c\u7b2c\u4e8c\u8d9f\u9700\u8981n-2\u7ec4\uff0c\u8bbe\u6709 i \u4ece0\u5f00\u59cb\uff0c\u5219\u6bcf\u8d9f\u6709 n-1-i \u7ec4<\/p>\n\n\n\n<p>\u4ee5\u6570\u7ec4\u4e3a\u4f8b\uff0c\u5bb9\u6613\u5f97\u51fa\u4ee5\u4e0b\u57fa\u672c\u7b97\u6cd5\uff08\u9700\u8981\u4f18\u5316\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>    public static void main(String &#91;]args){\n\n        int&#91;] arr = {6,4,2,9,88,55};\n        System.out.println(\"\u6392\u5e8f\u524d\uff1a\"+Arrays.toString(arr));\n        bubbleSort(arr);\n        System.out.println(\"\u6392\u5e8f\u540e\uff1a\"+Arrays.toString(arr));\n    }\n    \/**\n     * \u5192\u6ce1\u6392\u5e8f\n     * @param arr \u539f\u6570\u7ec4\n     *\/\n    static void bubbleSort(int&#91;] arr){\n\n        int temp;  \/\/ \u4e34\u65f6\u53d8\u91cf\n        for (int i = 0; i &lt; arr.length-1; i++) {  \/\/ n-1\u8d9f\n            for (int j = 0; j &lt; arr.length-1-i; j++) {  \/\/ n-1-i\u7ec4\n\n                \/\/ >:\u5347\u5e8f  &lt;:\u964d\u5e8f\n                if(arr&#91;j]&lt;arr&#91;j+1]){\n                    temp = arr&#91;j];\n                    arr&#91;j] = arr&#91;j+1];\n                    arr&#91;j+1] = temp;\n                }\n            }\n\n        }\n\n    }<\/code><\/pre>\n\n\n\n<p>\u7a0b\u5e8f\u8fd0\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n<ul><li>\u6392\u5e8f\u524d\uff1a[6, 4, 2, 9, 88, 55]<\/li><li>\u6392\u5e8f\u540e\uff1a[88, 55, 9, 6, 4, 2]<\/li><\/ul>\n\n\n\n<h4>\u5192\u6ce1\u7b97\u6cd5\u4f18\u5316<\/h4>\n\n\n\n<p>\u6211\u4eec\u77e5\u9053\uff0c\u5192\u6ce1\u7b97\u6cd5\u662f \u201d\u76f8\u90bb\u66ff\u6362\u201c\u5b9e\u73b0\u7684\uff0c\u90a3\u4e48\u5982\u679c\u7b2c\u4e00\u8d9f\u6ca1\u6709\u53d1\u751f\u66ff\u6362\u662f\u4e0d\u662f\u8bf4\u660e\u5e8f\u5217\u672c\u8eab\u6709\u5e8f\u5462\uff1f<\/p>\n\n\n\n<p>\u6240\u4ee5\uff0c\u5728\u7a0b\u5e8f\u4e2d\uff0c\u5bf9\u6bcf\u4e00\u8d9f\u589e\u52a0\u66ff\u6362\u68c0\u6d4b\u5373\u53ef<\/p>\n\n\n\n<p>\u4f18\u5316\u540e\uff0c\u65f6\u95f4\u590d\u6742\u5ea6\u6700\u597d\u7684\u60c5\u51b5\u4e0b\u80fd\u8fbe\u5230O(n)<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>    public static void main(String &#91;]args){\n\n        int&#91;] arr = {55, 88, 9, 6, 2, 4};\n        System.out.println(\"\u6392\u5e8f\u524d\uff1a\"+Arrays.toString(arr));\n        bubbleSort(arr);\n        System.out.println(\"\u6392\u5e8f\u540e\uff1a\"+Arrays.toString(arr));\n    }\n    \/**\n     * \u5192\u6ce1\u6392\u5e8f\n     * @param arr \u539f\u6570\u7ec4\n     *\/\n    static void bubbleSort(int&#91;] arr){\n\n        int temp;  \/\/ \u4e34\u65f6\u4ea4\u6362\u53d8\u91cf\n        boolean changeFlag;  \/\/ \u4ea4\u6362\u68c0\u6d4b\u53d8\u91cf\n\n        for (int i = 0; i &lt; arr.length-1; i++) {  \/\/ n-1\u8d9f\n            changeFlag = false;\n            for (int j = 0; j &lt; arr.length-1-i; j++) {  \/\/ n-1-i\u7ec4\n\n                \/\/ >:\u5347\u5e8f  &lt;:\u964d\u5e8f\n                if(arr&#91;j]&lt;arr&#91;j+1]){\n                    temp = arr&#91;j];\n                    arr&#91;j] = arr&#91;j+1];\n                    arr&#91;j+1] = temp;\n                    changeFlag = true;  \/\/ \u53d1\u751f\u4ea4\u6362         \n               }\n            }\n\n            if(!changeFlag){  \/\/ \u4e00\u8d9f\u4e2d\u6ca1\u6709\u4ea4\u6362\n                break;\n            }\n\n        }\n\n    }<\/code><\/pre>\n\n\n\n<p>\u7a0b\u5e8f\u6267\u884c\u7ed3\u679c\uff1a<\/p>\n\n\n\n<ul><li>\u6392\u5e8f\u524d\uff1a[55, 88, 9, 6, 2, 4]<\/li><li>\u6392\u5e8f\u540e\uff1a[88, 55, 9, 6, 4, 2]<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u5192\u6ce1\u6392\u5e8f\u662f\u5e38\u7528\u7684\u6392\u5e8f\u7b97\u6cd5\uff0c\u65f6\u95f4\u590d\u6742\u5ea6 \u6700\u574f\u60c5\u51b5\uff0c\u4e3aO(n\u00b2) \u6700\u597d\u60c5\u51b5\uff0c\u4e3aO(n) \u6b64\u5916\uff0c\u7a7a\u95f4\u590d\u6742\u5ea6O(1)\uff0c&hellip; <a href=\"https:\/\/www.52dixiaowo.com\/javav2\/post-45.html\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">java\u5192\u6ce1\u6392\u5e8f\u7b97\u6cd5\u53ca\u5176\u4f18\u5316<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts\/45"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/comments?post=45"}],"version-history":[{"count":0,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/posts\/45\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/media?parent=45"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/categories?post=45"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/javav2\/wp-json\/wp\/v2\/tags?post=45"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}