{"id":8555,"date":"2024-06-04T20:01:01","date_gmt":"2024-06-04T12:01:01","guid":{"rendered":""},"modified":"2024-06-04T20:01:01","modified_gmt":"2024-06-04T12:01:01","slug":"nextval\u548cnext\u6570\u7ec4\u533a\u522b_\u4e32\u7684next\u6570\u7ec4\u503c\u8be6\u7ec6\u6b65\u9aa4","status":"publish","type":"post","link":"https:\/\/mushiming.com\/8555.html","title":{"rendered":"nextval\u548cnext\u6570\u7ec4\u533a\u522b_\u4e32\u7684next\u6570\u7ec4\u503c\u8be6\u7ec6\u6b65\u9aa4"},"content":{"rendered":"<p><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"display: none;\"> \n <path stroke-linecap=\"round\" d=\"M5,0 0,2.5 5,5z\" id=\"raphael-marker-block\" style=\"-webkit-tap-highlight-color: rgba(0, 0, 0, 0);\"><\/path> \n<\/svg> <\/p>\n<p>KMP\u7b97\u6cd5\u91cc\u9762\u7684next\u6570\u7ec4\uff0c\u5206\u6790\u8d77\u6765\u8fd8\u662f\u633a\u6709\u5473\u9053\u7684\uff0c\u4e66\u4e0a\u7684\u6587\u5b57\u63cf\u8ff0\u770b\u8d77\u6765\u6709\u70b9\u6742\u4e71\uff0c\u7136\u540e\u4e0a\u7f51\u67e5\u5c31\u66f4\u61f5\u4e86\uff0cb\u7ad9\u554a\u5404\u79cd\u8bba\u575b\u554a\uff0c\u5199\u7684\u4eba\u591a\u4f46\u662f\u4f1a\u53d1\u73b0\u4ed6\u4eec\u4e4b\u95f4\u6709\u4e00\u4e9b\u4e0d\u4e00\u6837\uff0c\u6211\u89c9\u5f97\u533a\u522b\u5c31\u5728\u4e8e\u90a3\u4e2a\u6570\u7ec4\u4e0b\u6807\u5230\u5e95\u662f\u4ece0\u8fd8\u662f\u4ece1\u5f00\u59cb\u7684\u3001\u3001\u3001<\/p>\n<p>\u73b0\u5728\u8bf4\u4e00\u4e0b\u6211\u81ea\u5df1\u7684\u7406\u89e3\u5427\uff08\u5047\u8bbe\u770b\u5230\u8fd9\u7bc7\u535a\u5ba2\u7684\u4eba\u662f\u5df2\u7ecf\u4f1a\u624b\u7b97next\u6570\u7ec4\u7684\u54c8\uff0c\u6211\u5c31\u76f4\u63a5\u4e0a\u4ee3\u7801\u4e86\uff09<\/p>\n<\/p>\n<div class=\"toc\">\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\n<ul>\n<li>1.\u6570\u7ec4\u4e0b\u6807\u95ee\u9898<\/li>\n<li>2.next\u6570\u7ec4\u7684\u5b9a\u4e49\uff1a<\/li>\n<li>3.\u73b0\u5728\u5206\u6790\u8363\u653f\u8001\u5e08\u4e66\u4e0a\u7684\u4ee3\u7801\uff1a<\/li>\n<li>4.\u5173\u4e8e\u8363\u653f\u8001\u5e08\u4ee3\u7801\u7684\u4e00\u70b9\u95ee\u9898<\/li>\n<li>5.\u4e0b\u6807\u4ece1\u5f00\u59cb\u7684next\u4ee3\u7801<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<h3>1.\u6570\u7ec4\u4e0b\u6807\u95ee\u9898<\/h3>\n<p>\u7f16\u7a0b\u8bed\u8a00\u91cc\u9762\u7684\u6570\u7ec4\uff0c\u90fd\u662f\u4ece0\u5f00\u59cb\u7684\uff0c\u5373\u5b9a\u4e49\u4e00\u4e2a<code>arr[10]<\/code>\uff0c\u90a3\u4e48\u5b83\u91cc\u9762\u662f\u4ece<code>a[0]~a[9]<\/code>\u7684\uff0c\u7136\u800c\u7531\u65f6\u5019\u53ef\u80fd\u4e3a\u4e86\u8fd0\u7b97\u65b9\u4fbf\u6216\u5176\u4ed6\u4f5c\u7528\uff0c\u6211\u4eec\u5e38\u4f7f\u7528<code>a[1]~a[9]<\/code>\u6765\u5b58\u5b9e\u9645\u6570\u636e\u5143\u7d20\uff0c\u6240\u4ee5\u5f97\u5177\u4f53\u770b\u9898\u76ee\u8981\u6c42\u554a<br \/> \u6570\u7ec4\u4e0b\u6807\u4ece0\u5f00\u59cb\uff1a\u5373\u6570\u7ec4\u91cc\u9762\u4ece\u7b2c\u4e00\u4e2a\u5230\u6700\u540e\u4e00\u4e2a\u5b58\u7684\u90fd\u662f\u6570\u7ec4\u5143\u7d20<br \/> \u6570\u7ec4\u4e0b\u6807\u4ece1\u5f00\u59cb\uff1a\u4efb\u7136\u662f\u6709<code>arr[0]<\/code>\u5b58\u5728\u7684\uff0c\u4e0d\u8fc7\u5b83\u4e0d\u5b58\u6570\u7ec4\u5143\u7d20\uff0c\u53ef\u4ee5\u5b58\u4e00\u4e0b\u8f85\u52a9\u4fe1\u606f\uff0c\u6bd4\u5982\u6570\u7ec4\u5143\u7d20\u7684\u5b9e\u9645\u4e2a\u6570<br \/> eg\uff1a\u5b9a\u4e49\u4e00\u4e2a\u6570\u7ec4\u4e3a<code>arr[10]<\/code>\uff0c\u4f46\u662f\u7b2c\u4e00\u4f4d\u4e0d\u5b58\u6570\u7ec4\u5143\u7d20\uff0c\u7b2c\u4e8c\u4f4d\u5230\u7b2c\u5341\u4f4d\u624d\u5b58\uff0c\u5047\u5982\u73b0\u5728\u7b2c\u4e00\u4f4d\u5b58\u6570\u7ec4\u5143\u7d20\u5b9e\u9645\u4e2a\u6570\uff0c\u73b0\u5728\u6211\u628a<code>abcdefg<\/code>\u5b58\u8fdb\u53bb\uff0c\u90a3\u4e48\u73b0\u5728\u6570\u7ec4\u91cc\u9762\u7684\u60c5\u51b5\u662f\u8fd9\u6837\u7684\uff0c\u5bf9\u4e86\uff0c\u4ece1\u5f00\u59cb\u4e0d\u4ee3\u8868\u6709<code>a[10]<\/code>\u554a\uff0c\u5e95\u5c42\u4ecd\u7136\u662f<code>a[0]~a[9]<\/code><br \/> <img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/mushiming_com\/5c9a3312578c4a20862a4e6562b620cf.png\" =\"\" =\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" alt=\"nextval\u548cnext\u6570\u7ec4\u533a\u522b_\u4e32\u7684next\u6570\u7ec4\u503c\u8be6\u7ec6\u6b65\u9aa4 (https:\/\/mushiming.com\/)  \u7b2c1\u5f20\" title=\"nextval\u548cnext\u6570\u7ec4\u533a\u522b_\u4e32\u7684next\u6570\u7ec4\u503c\u8be6\u7ec6\u6b65\u9aa4  \u7b2c1\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><\/p>\n<h3>2.next\u6570\u7ec4\u7684\u5b9a\u4e49\uff1a<\/h3>\n<p><img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/mushiming_com\/b14dc0697e8541fba4a31894fff5a6ab.png\" =\"\" =\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" alt=\"nextval\u548cnext\u6570\u7ec4\u533a\u522b_\u4e32\u7684next\u6570\u7ec4\u503c\u8be6\u7ec6\u6b65\u9aa4 (https:\/\/mushiming.com\/)  \u7b2c2\u5f20\" title=\"nextval\u548cnext\u6570\u7ec4\u533a\u522b_\u4e32\u7684next\u6570\u7ec4\u503c\u8be6\u7ec6\u6b65\u9aa4  \u7b2c2\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><br \/> \u5c31\u53ef\u4ee5\u770b\u5230\u8fd9\u91cc\u5176\u5b9enext\u6570\u7ec4\u4e0b\u6807\u662f\u4ece1\u5f00\u59cb\u7684<\/p>\n<h3>3.\u73b0\u5728\u5206\u6790\u8363\u653f\u8001\u5e08\u4e66\u4e0a\u7684\u4ee3\u7801\uff1a<\/h3>\n<pre><code class=\"prism language-java\"><span class=\"token keyword\">void<\/span> <span class=\"token function\">GetNext<\/span><span class=\"token punctuation\">(<\/span>seqstring <span class=\"token operator\">*<\/span>t<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span> <span class=\"token operator\">*<\/span>next<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n\t\t<span class=\"token keyword\">int<\/span> i <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span> j <span class=\"token operator\">=<\/span> <span class=\"token operator\">-<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span>\n\t\tnext<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">=<\/span> <span class=\"token operator\">-<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span>\n\t\t<span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>i <span class=\"token operator\">&lt;<\/span> t<span class=\"token operator\">-<\/span><span class=\"token operator\">&gt;<\/span>len<span class=\"token punctuation\">)<\/span>\n\t\t<span class=\"token punctuation\">{ \n   <!-- --><\/span>\n\t\t\t<span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>j <span class=\"token operator\">==<\/span> <span class=\"token operator\">-<\/span><span class=\"token number\">1<\/span> <span class=\"token operator\">||<\/span> t<span class=\"token operator\">-<\/span><span class=\"token operator\">&gt;<\/span>ch<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">==<\/span> t<span class=\"token operator\">-<\/span><span class=\"token operator\">&gt;<\/span>ch<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n\t\t\t\t<span class=\"token operator\">++<\/span>i<span class=\"token punctuation\">;<\/span>\n\t\t\t\t<span class=\"token operator\">++<\/span>j<span class=\"token punctuation\">;<\/span>\n\t\t\t\tnext<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">==<\/span> j<span class=\"token punctuation\">;<\/span>\n\t\t\t<span class=\"token punctuation\">}<\/span>\n\t\t\t<span class=\"token keyword\">else<\/span>\n\t\t\t<span class=\"token punctuation\">{ \n   <!-- --><\/span>\n\t\t\t\tj <span class=\"token operator\">=<\/span> next<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n\t\t\t<span class=\"token punctuation\">}<\/span>\n\t\t<span class=\"token punctuation\">}<\/span>\n\t<span class=\"token punctuation\">}<\/span>\n<\/code><\/pre>\n<p>\u8fd9\u91cc\u63a8\u8350\u4e00\u7bc7\u6211\u8ba4\u4e3a\u5199\u5f97\u6700\u597d\u7684kmp\u7b97\u6cd5\u535a\u5ba2\u70b9\u8fd9\u91cc\uff0c\u5176\u4ed6\u7684\u535a\u5ba2\u771f\u7684\u4e00\u8a00\u96be\u5c3d\uff0c\u5927\u5bb6\u5728\u67e5\u627e\u7684\u65f6\u5019\u53ef\u8981\u8d39\u4e9b\u529f\u592b\u4e86<br \/> \u53ef\u4ee5\u770b\u5230\u8fd9\u91cc<code>next[0]=-1<\/code>\uff0c\u6240\u4ee5\u8fd9\u4e2a\u4ee3\u7801\u7684next\u4e0b\u6807\u662f\u4ece0\u5f00\u59cb\u7684\uff0c\u800c\u4e0a\u9762next\u7684\u5b9a\u4e49\u8bf4\u4e86\uff0c\u662f\u4e0b\u6807\u662f\u4ece1\u5f00\u59cb\u7684\uff0c\u597d\uff0c\u6162\u6162\u6765<br \/> \u56e0\u4e3a\u6211\u7684visual studio\u51fa\u4e86\u70b9\u95ee\u9898\uff0c\u6240\u4ee5\u6211\u7528java\u590d\u73b0\u4e00\u4e0b\u4ee3\u7801\uff0c\u539f\u7406\u4e00\u6837\u7684\uff0c\u5c31\u662f\u4e00\u4e9b\u5b9a\u4e49\u4e0d\u4e00\u6837\uff0c\u76f8\u4fe1\u90fd\u53ef\u4ee5\u770b\u5f97\u61c2\uff0c<br \/> \u57fa\u4e8e\u4e66\u4e0a\u7684\u4f8b4-2\u91cc\u9762\u7684<code>T=\"abaabcac\"<\/code><\/p>\n<pre><code class=\"prism language-java\">  <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">getNext0<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">char<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> s<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> next<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span>\n    <span class=\"token keyword\">int<\/span> i <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span>j <span class=\"token operator\">=<\/span> <span class=\"token operator\">-<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span>\n    next<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">=<\/span> <span class=\"token operator\">-<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>i <span class=\"token operator\">&lt;<\/span> s<span class=\"token punctuation\">.<\/span>length<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span>\n      <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>j <span class=\"token operator\">==<\/span> <span class=\"token operator\">-<\/span><span class=\"token number\">1<\/span> <span class=\"token operator\">||<\/span> s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">==<\/span> s<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        <span class=\"token operator\">++<\/span>i<span class=\"token punctuation\">;<\/span>\n        <span class=\"token operator\">++<\/span>j<span class=\"token punctuation\">;<\/span>\n        next<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">=<\/span> j<span class=\"token punctuation\">;<\/span>\n      <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        j <span class=\"token operator\">=<\/span> next<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n      <span class=\"token punctuation\">}<\/span>\n    <span class=\"token punctuation\">}<\/span>\n  <span class=\"token punctuation\">}<\/span>\n\n  <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span>String<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> args<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n    <span class=\"token keyword\">char<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> s0 <span class=\"token operator\">=<\/span>  <span class=\"token punctuation\">{ \n   <!-- --><\/span><span class=\"token string\">'a'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'b'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'a'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'a'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'b'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'c'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'a'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'c'<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> next0 <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">int<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">9<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token function\">getNext0<\/span><span class=\"token punctuation\">(<\/span>s0<span class=\"token punctuation\">,<\/span> next0<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">9<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n      System<span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\" \"<\/span> <span class=\"token operator\">+<\/span> next0<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">+<\/span> <span class=\"token string\">\" \"<\/span> <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n\n    <span class=\"token punctuation\">}<\/span>\n\n<\/code><\/pre>\n<p>\u8fd0\u884c\u7ed3\u679c\uff1a<br \/> <img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/mushiming_com\/fc4bbbdc403040a48a6a713e3068f2c6.png\" =\"\" =\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" alt=\"nextval\u548cnext\u6570\u7ec4\u533a\u522b_\u4e32\u7684next\u6570\u7ec4\u503c\u8be6\u7ec6\u6b65\u9aa4 (https:\/\/mushiming.com\/)  \u7b2c3\u5f20\" title=\"nextval\u548cnext\u6570\u7ec4\u533a\u522b_\u4e32\u7684next\u6570\u7ec4\u503c\u8be6\u7ec6\u6b65\u9aa4  \u7b2c3\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><br \/> \u53d1\u73b0\u4ec0\u4e48\u95ee\u9898\u6ca1\u6709\uff0c\u4e66\u4e0a\u7684\u7ed3\u679c\u662f\uff1a<br \/> <img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/mushiming_com\/29a575eb25774a12b8c3a9ed6f2aae2a.jpg\" =\"\" =\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" alt=\"nextval\u548cnext\u6570\u7ec4\u533a\u522b_\u4e32\u7684next\u6570\u7ec4\u503c\u8be6\u7ec6\u6b65\u9aa4 (https:\/\/mushiming.com\/)  \u7b2c4\u5f20\" title=\"nextval\u548cnext\u6570\u7ec4\u533a\u522b_\u4e32\u7684next\u6570\u7ec4\u503c\u8be6\u7ec6\u6b65\u9aa4  \u7b2c4\u5f20-\u7a46\u4e16\u660e\u535a\u5ba2\" ><br \/> \u95ee\u98981\uff1a\u7ed3\u679c\u5b8c\u5168\u4e0d\u5bf9\u554a\uff01\u95ee\u98982\uff1a\u8fd9\u91cc\u662f8\u4e2a\u6570\u636e\u800c\u6211\u4e0a\u9762\u8fd0\u884c\u51fa\u6765\u662f9\u4e2a\u6570\u636e<br \/> \u597d\u4e86\uff0c\u8fd9\u5c31\u662f\u4e0b\u6807\u4ece1\u5f00\u59cb\u8fd8\u662f0\u5f00\u59cb\u5e26\u6765\u7684\u4e0d\u540c\u5f71\u54cd<\/p>\n<p>\u5148\u89e3\u51b3\u4e3a\u4ec0\u4e48\u662f9\u4e2a\u6570\u636e\u7684\u95ee\u9898\uff1a\u6ce8\u610f\u770b\u4ee3\u7801\uff0c<code>while (i &lt; s.length)<\/code>\uff0c\u800c\u5728\u5b83\u91cc\u9762\u662f\u5148<code>++i<\/code>\uff0c\u5728\u8fdb\u884c\u8d4b\u503c<code>next[i]=j<\/code>\uff0c\u8fd9\u5c31\u5bfc\u81f4\u5f53<code>i=7<\/code>\u65f6\uff0c<code>while<\/code>\u653e\u884c\uff0c<code>++i<\/code>\u4f7f\u5f97<code>i=8<\/code>\uff0c\u6240\u4ee5\u6b64\u65f6\u5c31\u51fa\u73b0\u4e86<code>next[8]<\/code>\uff0c\u6240\u4ee5\u4e5f\u5c31\u6709\u4e869\u4e2a\u5143\u7d20\uff1b<\/p>\n<p>\u518d\u8bf4\u7ed3\u679c\u7684\u95ee\u9898\uff1a\u867d\u7136\u5b8c\u5168\u4e0d\u4e00\u6837\uff0c\u4f46\u662f\u6ce8\u610f\u770b\uff0c\u6211\u7684\u8fd0\u884c\u7ed3\u679c\u5168\u90e8\u52a01\uff0c\u5373\u4e3a\u6b63\u786e\u7ed3\u679c\uff0c\u5f53\u7136\u8fd9\u4e2a\u65f6\u5019\u5c31\u820d\u5f03\u6389\u6211\u591a\u51fa\u6765\u7684\u6700\u540e\u4e00\u4e2a\u6570\u636e\uff0c\u4fdd\u7559\u524d8\u4e2a\uff0c\u4e3a\u4ec0\u4e48\u52a01\u5462\uff0c\u539f\u56e0\u5c31\u5728\u4e8e\u770b\u521d\u59cb\u5b9a\u4e49<code>next[0]=-1<\/code>\uff0c\u800c\u56de\u770bnext\u6570\u7ec4\u5b9a\u4e49\uff0c\u91cc\u9762\u7684\u7b2c\u4e00\u4e2a\u503c\u5b9a\u4e49\u7684\u662f0\uff0c\u4e86\u89e3\u4e86\u5427<\/p>\n<h3>4.\u5173\u4e8e\u8363\u653f\u8001\u5e08\u4ee3\u7801\u7684\u4e00\u70b9\u95ee\u9898<\/h3>\n<p>\u53ef\u4ee5\u770b\u5230\u4ee3\u7801\u91cc\u9762\uff0cj\u7684\u521d\u59cb\u503c\u662f-1\uff0c\u800c\u5728<code>if (j == -1 || s[i] == s[j])<\/code>\u8fd9\u91cc\u5374\u76f4\u63a5\u4f7f\u7528j\u6765\u4f5c\u4e3a\u6570\u7ec4\u4e0b\u6807\uff0c\u96be\u5ea6\u6570\u7ec4\u8fd8\u6709\u4e0b\u6807\u4e3a-1\u7684\u5417\uff0c\u5176\u5b9e\u4e0d\u7136\uff0c\u6ce8\u610f\u8fd9\u91cc\u7684<code>||<\/code>\u7b26\u53f7\uff0c\u5b83\u662f\u6216\u7684\u610f\u601d\uff0c\u5373\u4e00\u4e2a\u6b63\u786e\u5c31\u653e\u884c\uff0c\u4e24\u4e2a\u90fd\u9519\u8bef\u624d\u9000\u51fa\uff0c\u90a3\u4e48\u4e00\u5f00\u59cb\uff0c\u6211\u7684j\u503c\u4e3a-1\uff0c\u662f\u4e0d\u662f\u7b2c\u4e00\u4e2a\u5c31\u6b63\u786e\u7684\uff0c\u6240\u4ee5\u6b64\u65f6\u5c31\u4e0d\u7528\u518d\u5224\u65ad\u540e\u9762\u7684<code>s[i] == s[j]<\/code>\u4e86\uff0c\u4e5f\u5c31\u4e0d\u4f1a\u51fa\u73b0\u9519\u8bef\u4e86\uff0c\u90a3\u4e48\u5f53\u7b2c\u4e00\u4e2a\u9519\u4e86\u600e\u4e48\u529e\u5462\uff0c\u7b2c\u4e00\u4e2a\u9519j\u5c31\u4e0d\u662f-1\u4e86\uff0c\u6240\u4ee5\u4e0b\u6807\u4e5f\u5c31\u4e0d\u4f1a\u51fa\u9519\u4e86\uff0c\u4f46\u662f\u5f97\u6ce8\u610f\uff0c\u4e0d\u8981\u5199\u4e3a<code>if(s[i] == s[j] || j == -1)<\/code>\uff0c\u4e00\u65e6\u53cd\u8fc7\u6765\uff0c\u5c31\u4f1a\u5148\u5224\u65ad\u524d\u9762\u4e00\u4e2a\uff0c\u6b64\u65f6\u5c31\u4f1a\u62a5\u6570\u7ec4\u8d8a\u754c\u7684\u9519\u8bef\u4e86<\/p>\n<h3>5.\u4e0b\u6807\u4ece1\u5f00\u59cb\u7684next\u4ee3\u7801<\/h3>\n<p>\u8981\u662f\u9898\u76ee\u8981\u6c42\u4e0b\u6807\u4ece1\u5f00\u59cb\uff0c\u5c31\u5f97\u6539\u53d8\u4e00\u4e0b\u4ee3\u7801\u4e86\uff0c\u800c\u4e14\u6b64\u65f6\u5f97\u51fa\u7684\u7ed3\u679c\u5373\u4e3a\u6b63\u786e\u7ed3\u679c\uff0c\u4e0d\u7528\u50cf\u7b2c\u4e00\u79cd\u4ee3\u7801\u90a3\u6837\u9700\u8981\u4e22\u5f03\u6700\u540e\u4e00\u4e2a\u7ed3\u679c\u5e76\u4e14\u5168\u90e8\u52a01\u624d\u662f\u6b63\u786e\u7ed3\u679c\uff0c\u6211\u5c31\u628a\u4e24\u79cd\u4ee3\u7801\u4e00\u8d77\u8d34\u51fa\u6765<\/p>\n<pre><code class=\"prism language-java\"><span class=\"token keyword\">public<\/span> <span class=\"token keyword\">class<\/span> <span class=\"token class-name\">KMP<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n\n<span class=\"token comment\">\/\/ \u4e0b\u6807\u4ece1\u5f00\u59cb<\/span>\n  <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">getNext<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">char<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> s<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">int<\/span> next<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span>\n    <span class=\"token keyword\">int<\/span> i <span class=\"token operator\">=<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span>j <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>\n    next<span class=\"token punctuation\">[<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>i <span class=\"token operator\">&lt;<\/span> s<span class=\"token punctuation\">.<\/span>length<span class=\"token operator\">-<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span>\n      <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>j <span class=\"token operator\">==<\/span> <span class=\"token number\">0<\/span> <span class=\"token operator\">||<\/span> s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">==<\/span> s<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        <span class=\"token operator\">++<\/span>i<span class=\"token punctuation\">;<\/span>\n        <span class=\"token operator\">++<\/span>j<span class=\"token punctuation\">;<\/span>\n        next<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">=<\/span> j<span class=\"token punctuation\">;<\/span>\n      <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        j <span class=\"token operator\">=<\/span> next<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n      <span class=\"token punctuation\">}<\/span>\n    <span class=\"token punctuation\">}<\/span>\n  <span class=\"token punctuation\">}<\/span>\n\n<span class=\"token comment\">\/\/\u4e0b\u6807\u4ece0\u5f00\u59cb<\/span>\n  <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">getNext0<\/span><span class=\"token punctuation\">(<\/span><span class=\"token keyword\">char<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> s<span class=\"token punctuation\">,<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> next<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span>\n    <span class=\"token keyword\">int<\/span> i <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">,<\/span>j <span class=\"token operator\">=<\/span> <span class=\"token operator\">-<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span>\n    next<span class=\"token punctuation\">[<\/span><span class=\"token number\">0<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">=<\/span> <span class=\"token operator\">-<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">while<\/span> <span class=\"token punctuation\">(<\/span>i <span class=\"token operator\">&lt;<\/span> s<span class=\"token punctuation\">.<\/span>length<span class=\"token operator\">-<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span> <span class=\"token comment\">\/\/ \u628a\u8fd9\u91cc\u6539\u4e00\u4e0b\u51cf1\uff0c\u5c31\u4e0d\u4f1a\u51fa\u73b0\u591a\u4e00\u4e2a\u6570\u636e\u7684\u60c5\u51b5\u4e86<\/span>\n      <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>j <span class=\"token operator\">==<\/span> <span class=\"token operator\">-<\/span><span class=\"token number\">1<\/span> <span class=\"token operator\">||<\/span> s<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">==<\/span> s<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        <span class=\"token operator\">++<\/span>i<span class=\"token punctuation\">;<\/span>\n        <span class=\"token operator\">++<\/span>j<span class=\"token punctuation\">;<\/span>\n        next<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">=<\/span> j<span class=\"token punctuation\">;<\/span>\n      <span class=\"token punctuation\">}<\/span><span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n        j <span class=\"token operator\">=<\/span> next<span class=\"token punctuation\">[<\/span>j<span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n      <span class=\"token punctuation\">}<\/span>\n    <span class=\"token punctuation\">}<\/span>\n  <span class=\"token punctuation\">}<\/span>\n\n  <span class=\"token keyword\">public<\/span> <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">void<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span>String<span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> args<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n    <span class=\"token keyword\">char<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> s <span class=\"token operator\">=<\/span>  <span class=\"token punctuation\">{ \n   <!-- --><\/span><span class=\"token string\">'9'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'a'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'b'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'a'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'a'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'b'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'c'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'a'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'c'<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> next <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">int<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">9<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token function\">getNext<\/span><span class=\"token punctuation\">(<\/span>s<span class=\"token punctuation\">,<\/span> next<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">=<\/span> <span class=\"token number\">1<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">9<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n      System<span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\" \"<\/span> <span class=\"token operator\">+<\/span> next<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">+<\/span> <span class=\"token string\">\" \"<\/span> <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n\n    System<span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">println<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\"\"<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">char<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> s0 <span class=\"token operator\">=<\/span>  <span class=\"token punctuation\">{ \n   <!-- --><\/span><span class=\"token string\">'a'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'b'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'a'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'a'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'b'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'c'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'a'<\/span><span class=\"token punctuation\">,<\/span><span class=\"token string\">'c'<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">int<\/span><span class=\"token punctuation\">[<\/span><span class=\"token punctuation\">]<\/span> next0 <span class=\"token operator\">=<\/span> <span class=\"token keyword\">new<\/span> <span class=\"token class-name\">int<\/span><span class=\"token punctuation\">[<\/span><span class=\"token number\">8<\/span><span class=\"token punctuation\">]<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token function\">getNext0<\/span><span class=\"token punctuation\">(<\/span>s0<span class=\"token punctuation\">,<\/span> next0<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token keyword\">for<\/span> <span class=\"token punctuation\">(<\/span><span class=\"token keyword\">int<\/span> i <span class=\"token operator\">=<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span> i <span class=\"token operator\">&lt;<\/span> <span class=\"token number\">8<\/span><span class=\"token punctuation\">;<\/span> i<span class=\"token operator\">++<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{ \n   <!-- --><\/span>\n      System<span class=\"token punctuation\">.<\/span>out<span class=\"token punctuation\">.<\/span><span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">\" \"<\/span> <span class=\"token operator\">+<\/span> next0<span class=\"token punctuation\">[<\/span>i<span class=\"token punctuation\">]<\/span> <span class=\"token operator\">+<\/span> <span class=\"token string\">\" \"<\/span> <span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>\n    <span class=\"token punctuation\">}<\/span>\n\n    <span class=\"token punctuation\">}<\/span>\n\n  <span class=\"token punctuation\">}<\/span>\n<\/code><\/pre>\n<p>\u8fd0\u884c\u7ed3\u679c\uff1a<br \/> <img decoding=\"async\" src=\"https:\/\/img.mushiming.top\/app\/mushiming_com\/74bb923eae224a998dfb291286c447ac.png\" =\"\" =\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" 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2.\u5f85\u9a8c\u8bc1\u6570\u7ec4\u7684\u4e0d\u540c\uff0c\u4ece1\u5f00\u59cb\u7684\uff0c\u5982\u4e0a\u9762\u5206\u6790\u7684\uff0c\u7b2c\u4e00\u4f4d\u5c31\u4e0d\u5b58\u5143\u7d20\uff0c\u800c\u5b58\u5b9e\u9645\u4e2a\u6570\u7b49\u8f85\u52a9\u4fe1\u606f<\/p>\n<p>\u8fd8\u6709\u5c31\u662f\u6539\u52a8\u90a3\u91cc\uff0c\u51cf1\u5c31\u53ef\u4ee5\u907f\u514d\u591a\u8dd1\u51fa\u6765\u4e00\u4e2a\u6570\u636e\u7684\u95ee\u9898\uff0c<\/p>\n","protected":false},"excerpt":{"rendered":"nextval\u548cnext\u6570\u7ec4\u533a\u522b_\u4e32\u7684next\u6570\u7ec4\u503c\u8be6\u7ec6\u6b65\u9aa4KMP\u7b97\u6cd5\u91cc\u9762\u7684next\u6570\u7ec4\uff0c\u5206\u6790\u8d77\u6765\u8fd8\u662f\u633a\u6709\u5473\u9053\u7684\uff0c\u4e66\u4e0a\u7684\u6587\u5b57\u63cf\u8ff0\u770b\u8d77\u6765\u6709\u70b9\u6742...","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"_links":{"self":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/8555"}],"collection":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/comments?post=8555"}],"version-history":[{"count":0,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/posts\/8555\/revisions"}],"wp:attachment":[{"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/media?parent=8555"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/categories?post=8555"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mushiming.com\/wp-json\/wp\/v2\/tags?post=8555"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}