{"id":272,"date":"2011-09-18T13:22:00","date_gmt":"2011-09-18T05:22:00","guid":{"rendered":"http:\/\/wangkaixuan.tech\/?p=272"},"modified":"2020-06-06T13:24:19","modified_gmt":"2020-06-06T05:24:19","slug":"%e6%95%b0%e6%8d%ae%e7%bb%93%e6%9e%84_%e4%b8%b2_%e7%94%a8%e9%93%be%e8%a1%a8%e5%81%9a%e5%ad%98%e5%82%a8%e7%bb%93%e6%9e%84%e5%ae%9e%e7%8e%b0kmp%e7%ae%97%e6%b3%95_c%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"http:\/\/www.wangkaixuan.tech\/?p=272","title":{"rendered":"\u6570\u636e\u7ed3\u6784_\u4e32_\u7528\u94fe\u8868\u505a\u5b58\u50a8\u7ed3\u6784\u5b9e\u73b0KMP\u7b97\u6cd5_C++\u5b9e\u73b0"},"content":{"rendered":"\n

\u5199\u8fd9\u4e2a\u7ea0\u7ed3\u4e86\u5f88\u4e45\uff0c\u8001\u662f\u4f1a\u6709\u67d0\u4e2a\u73af\u8282\u51fa\u95ee\u9898\u3002\u5148\u662f\u5728\u5904\u7406\u4e32\u7684\u7ed3\u675f\u6807\u5fd7\u7684\u95ee\u9898\u4e0a\uff0c\u8001\u662f\u4f1a\u8ddf\u5176\u4ed6\u7684\u5224\u65ad\u6761\u4ef6\u51b2\u7a81\u9020\u6210\u63d0\u524d\u9000\u51fa\uff0c\u800c\u4e14\u65e0\u8bba\u4e3b\u4e32\u548c\u6a21\u5f0f\u4e32\u60c5\u51b5\u5982\u4f55\u7ed3\u679c\u603b\u662fsucceed\uff0c\u5c1d\u8bd5\u4e86\u597d\u51e0\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\u5c06\u5176\u94fe\u63a5\u6210\u5355\u5faa\u73af\u94fe\u8868\u7b49\uff0c\u6548\u679c\u603b\u662f\u4e0d\u592a\u7406\u60f3\uff0c\u540e\u6765\u5c31\u60f3\u5230\u4e86\u4e34\u65f6new\u4e00\u4e2a\u53d8\u91cf\uff0c\u7528\u5b8c\u4e4b\u540e\u518ddelete\u6389\uff0c\u7ed3\u679c\u7531\u4e8e\u591a\u5199\u4e86\u4e00\u4e2adelete\u8001\u662f\u62a5\u9519\uff0c\u540e\u6765\u624d\u53d1\u73b0\u5728ReMove\u51fd\u6570\u4e2d\u5df2\u7ecfdelete\u6389\u4e86\u3002\u7136\u540e\u5c31\u662fGetNext()\u548cKMP()\u5904\u7406\u4e0a\u6709\u70b9\u5c0f\u95ee\u9898\uff0c\u6709\u4e00\u4e9b\u7ec6\u8282\u6ca1\u6709\u5904\u7406\u597d\u3002\u540e\u6765\u5728\u7eb8\u4e0a\u505a\u4e86\u4e0b\u6a21\u62df\uff0c\u4e5f\u6162\u6162\u8c03\u8fc7\u6765\u4e86\uff0c\u8d34\u51fa\u6765\u5206\u4eab\u4e00\u4e0b\uff0c\u5982\u6709\u9519\u8bef\uff0c\u6b22\u8fce\u6307\u6b63\u3002<\/p>\n\n\n\n

head.h<\/p>\n\n\n\n

#include<iostream>\nusing namespace std;\n\nclass NODE\n{\npublic:\n\tNODE();\n\tchar ch;\n\tNODE *succ; \/\/\u6307\u5411\u4e0b\u4e00\u4e2a\u8282\u70b9\n\tNODE *next; \/\/\u5bf9\u4e8e\u4e3b\u4e32\u6307\u5411\u524d\u4e00\u4e2a\u8282\u70b9\uff1b\u5bf9\u4e8e\u6a21\u5f0f\u4e32\u6307\u5411\"\u5931\u914d\"\u4e0b\u4e00\u4e2a\u8981\u8fdb\u884c\u6bd4\u8f83\u7684\u8282\u70b9\n};\n\nNODE::NODE()\n{\n\tsucc = next = NULL;\n}\n\nclass STRING\n{\npublic:\n\tSTRING();\n\tvoid GetMainString();\n\tvoid GetSubstring();\n\tvoid KMP();\n\tvoid Print();\nprivate:\n\tvoid GetNext();\n\tvoid ReMove(NODE*);\n\tvoid GetLeftString(NODE*);\n\tNODE *head1, *p1, *end1, *head2, *p2, *end2;\n\t\/\/end1\u6807\u793a\u4e3b\u4e32\u7684\u7ed3\u5c3eend2\u6807\u793a\u6a21\u5f0f\u4e32\u7684\u7ed3\u5c3e\n};\n\nSTRING::STRING()\n{\n\tend1 = head1 = p1 = end2 = head2 = p2 = NULL;\n}\n\nvoid STRING::GetMainString() \/\/\u5f97\u5230\u4e3b\u4e32\n{\n\tcout << \"GetMainString Called !\" << endl << endl;\n\tchar ch;\n\tif (head1 != NULL) \/\/\u91ca\u653e\u8282\u70b9\u5185\u5b58\n\t{\n\t\tReMove(head1);\n\t\thead1 = NULL;\n\/\/\t\tdelete end1;\n\t\t\/\/\u6ce8\u610f\u8fd9\u91cc\u4e0d\u7528\u91ca\u653eend1\u7684\u5185\u5b58\uff0c\u56e0\u4e3a\u5728ReMove\u4e2d\u7ed3\u675f\u6761\u4ef6\u662fp==NULL\uff0c\u5df2\u7ecf\u628aend1\u7684\u5185\u5b58\u7ed9\u91ca\u653e\u6389\u4e86\n\t}\n\twhile (cin >> ch)\n\t{\n\t\tif (head1 == NULL)\n\t\t{\n\t\t\thead1 = new NODE;\n\t\t\thead1->ch = ch;\n\t\t\thead1->next = head1;\n\t\t\tp1 = head1;\n\t\t}\n\t\telse\n\t\t{\n\t\t\tp1->succ = new NODE;\n\t\t\tp1->succ->ch = ch;\n\t\t\tp1->succ->next = p1;\n\t\t\tp1 = p1->succ;\n\t\t}\n\t}\n\tif (head1 != NULL)\n\t{\n\t\tp1->succ = end1 = new NODE;\t\t\/\/\u7ed9\u4e32\u5c3e\u6dfb\u52a0\u7ed3\u675f\u6807\u5fd7\n\t}\n\tcin.clear();\n}\n\nvoid STRING::GetSubstring()\t\t\/\/\u5f97\u5230\u6a21\u5f0f\u4e32\n{\n\tcout << \"GetSubString Called !\" << endl << endl;\n\tchar ch;\n\tif (head2 != NULL)\n\t{\n\t\tReMove(head2);\n\t\thead2 = NULL;\n\/\/\t\tdelete end2;\n\t}\n\twhile (cin >> ch)\n\t{\n\t\tif (head2 == NULL)\n\t\t{\n\t\t\thead2 = new NODE;\n\t\t\thead2->ch = ch;\n\t\t\tp2 = head2;\n\t\t}\n\t\telse\n\t\t{\n\t\t\tp2->succ = new NODE;\n\t\t\tp2 = p2->succ;\n\t\t\tp2->ch = ch;\n\t\t}\n\t}\n\tif (head2 != NULL)\n\t{\n\t\tp2->succ = end2 = new NODE;\n\t}\n\tcin.clear();\n}\n\nvoid STRING::KMP()\t\t\/\/KMP\u7b97\u6cd5\u6838\u5fc3\n{\n\tcout << \"KMP Called !\" << endl << endl;\n\tif (head1 == NULL || head2 == NULL)\t\t\/\/\u7a7a\u4e32\u5904\u7406\n\t{\n\t\tcout << \"Failed !\" << endl << endl;\n\t}\n\tGetNext();\t\t\/\/\u5f97\u5230next\"\u503c\"\n\tp1 = head1;\n\tp2 = head2;\n\twhile (p1 != end1 && p2 != end2)\n\t{\n\t\tif (p2 == NULL || p1->ch == p2->ch)\n\t\t{\n\t\t\tp1 = p1->succ;\n\t\t\tif (p2 == NULL)\n\t\t\t\tp2 = head2;\n\t\t\telse\n\t\t\t\tp2 = p2->succ;\n\t\t}\n\t\telse\n\t\t{\n\t\t\tp2 = p2->next;\n\t\t}\n\t}\n\tif (p2 == end2)\t\t\/\/\u5224\u65ad\u662f\u5426\u5339\u914d\u6210\u529f\n\t{\n\t\tcout << \"Succeed ! The Left Of The String is = \";\n\t\tGetLeftString(p1);\n\t}\n\telse\n\t{\n\t\tcout << \"Failed !\" << endl << endl;\n\t}\n}\n\nvoid STRING::Print()\t\t\/\/\u8f93\u51fa\u4e3b\u4e32\u548c\u6a21\u5f0f\u4e32\u7684\u5185\u5bb9\n{\n\tcout << \"Print Called !\" << endl << endl;\n\tif (head1 == NULL)\n\t{\n\t\tcout << \"No Data In MainString !\" << endl << endl;\n\t}\n\telse\n\t{\n\t\tcout << \"MainString = \";\n\t\tp1 = head1;\n\t\twhile (p1 != end1)\n\t\t{\n\t\t\tcout << p1->ch;\n\t\t\tp1 = p1->succ;\n\t\t}\n\t\tcout << endl << endl;\n\t}\n\tif (head2 == NULL)\n\t{\n\t\tcout << \"No Data In SubString !\" << endl << endl;\n\t}\n\telse\n\t{\n\t\tcout << \"SubString = \";\n\t\tp2 = head2;\n\t\twhile (p2 != NULL)\n\t\t{\n\t\t\tcout << p2->ch;\n\t\t\tp2 = p2->succ;\n\t\t}\n\t\tcout << endl << endl;\n\t}\n}\n\nvoid STRING::GetNext()\t\t\/\/\u5f97\u5230\u6a21\u5f0f\u4e32\u7684next\u503c\n{\n\tp1 = head2;\n\tp2 = head2->next = NULL;\n\twhile (p1->succ != end2)\n\t{\n\t\tif (p2 == NULL || p1->ch == p2->ch)\n\t\t{\n\t\t\tp1 = p1->succ;\n\t\t\tif (p2 == NULL)\n\t\t\t\tp2 = head2;\n\t\t\telse\n\t\t\t\tp2 = p2->succ;\n\t\t\tif (p2 != p2->next)\n\t\t\t\tp1->next = p2;\n\t\t\telse\n\t\t\t\tp2 = p2->next;\n\t\t}\n\t\telse\n\t\t{\n\t\t\tp2 = p2->next;\n\t\t}\n\t}\n}\n\nvoid STRING::GetLeftString(NODE *p)\t\t\/\/\u8f93\u51fa\u5339\u914d\u6210\u529f\u540e\u4e3b\u4e32\u4e2d\u5269\u4e0b\u7684\u90e8\u5206\n{\n\twhile (p != end1)\n\t{\n\t\tcout << p->ch;\n\t\tp = p->succ;\n\t}\n\tcout << endl << endl;\n}\n\nvoid STRING::ReMove(NODE *p)\t\t\/\/\u9500\u6bc1\u5b57\u7b26\u4e32\u6240\u5360\u7684\u5185\u5b58\n{\n\tif (p == NULL)\n\t\treturn;\n\telse\n\t{\n\t\tReMove(p->succ);\n\t\tdelete p;\n\t}\n}#include<iostream>\nusing namespace std;\n\nclass NODE\n{\npublic:\n\tNODE();\n\tchar ch;\n\tNODE *succ; \/\/\u6307\u5411\u4e0b\u4e00\u4e2a\u8282\u70b9\n\tNODE *next; \/\/\u5bf9\u4e8e\u4e3b\u4e32\u6307\u5411\u524d\u4e00\u4e2a\u8282\u70b9\uff1b\u5bf9\u4e8e\u6a21\u5f0f\u4e32\u6307\u5411\"\u5931\u914d\"\u4e0b\u4e00\u4e2a\u8981\u8fdb\u884c\u6bd4\u8f83\u7684\u8282\u70b9\n};\n\nNODE::NODE()\n{\n\tsucc = next = NULL;\n}\n\nclass STRING\n{\npublic:\n\tSTRING();\n\tvoid GetMainString();\n\tvoid GetSubstring();\n\tvoid KMP();\n\tvoid Print();\nprivate:\n\tvoid GetNext();\n\tvoid ReMove(NODE*);\n\tvoid GetLeftString(NODE*);\n\tNODE *head1, *p1, *end1, *head2, *p2, *end2;\n\t\/\/end1\u6807\u793a\u4e3b\u4e32\u7684\u7ed3\u5c3eend2\u6807\u793a\u6a21\u5f0f\u4e32\u7684\u7ed3\u5c3e\n};\n\nSTRING::STRING()\n{\n\tend1 = head1 = p1 = end2 = head2 = p2 = NULL;\n}\n\nvoid STRING::GetMainString() \/\/\u5f97\u5230\u4e3b\u4e32\n{\n\tcout << \"GetMainString Called !\" << endl << endl;\n\tchar ch;\n\tif (head1 != NULL) \/\/\u91ca\u653e\u8282\u70b9\u5185\u5b58\n\t{\n\t\tReMove(head1);\n\t\thead1 = NULL;\n\/\/\t\tdelete end1;\n\t\t\/\/\u6ce8\u610f\u8fd9\u91cc\u4e0d\u7528\u91ca\u653eend1\u7684\u5185\u5b58\uff0c\u56e0\u4e3a\u5728ReMove\u4e2d\u7ed3\u675f\u6761\u4ef6\u662fp==NULL\uff0c\u5df2\u7ecf\u628aend1\u7684\u5185\u5b58\u7ed9\u91ca\u653e\u6389\u4e86\n\t}\n\twhile (cin >> ch)\n\t{\n\t\tif (head1 == NULL)\n\t\t{\n\t\t\thead1 = new NODE;\n\t\t\thead1->ch = ch;\n\t\t\thead1->next = head1;\n\t\t\tp1 = head1;\n\t\t}\n\t\telse\n\t\t{\n\t\t\tp1->succ = new NODE;\n\t\t\tp1->succ->ch = ch;\n\t\t\tp1->succ->next = p1;\n\t\t\tp1 = p1->succ;\n\t\t}\n\t}\n\tif (head1 != NULL)\n\t{\n\t\tp1->succ = end1 = new NODE;\t\t\/\/\u7ed9\u4e32\u5c3e\u6dfb\u52a0\u7ed3\u675f\u6807\u5fd7\n\t}\n\tcin.clear();\n}\n\nvoid STRING::GetSubstring()\t\t\/\/\u5f97\u5230\u6a21\u5f0f\u4e32\n{\n\tcout << \"GetSubString Called !\" << endl << endl;\n\tchar ch;\n\tif (head2 != NULL)\n\t{\n\t\tReMove(head2);\n\t\thead2 = NULL;\n\/\/\t\tdelete end2;\n\t}\n\twhile (cin >> ch)\n\t{\n\t\tif (head2 == NULL)\n\t\t{\n\t\t\thead2 = new NODE;\n\t\t\thead2->ch = ch;\n\t\t\tp2 = head2;\n\t\t}\n\t\telse\n\t\t{\n\t\t\tp2->succ = new NODE;\n\t\t\tp2 = p2->succ;\n\t\t\tp2->ch = ch;\n\t\t}\n\t}\n\tif (head2 != NULL)\n\t{\n\t\tp2->succ = end2 = new NODE;\n\t}\n\tcin.clear();\n}\n\nvoid STRING::KMP()\t\t\/\/KMP\u7b97\u6cd5\u6838\u5fc3\n{\n\tcout << \"KMP Called !\" << endl << endl;\n\tif (head1 == NULL || head2 == NULL)\t\t\/\/\u7a7a\u4e32\u5904\u7406\n\t{\n\t\tcout << \"Failed !\" << endl << endl;\n\t}\n\tGetNext();\t\t\/\/\u5f97\u5230next\"\u503c\"\n\tp1 = head1;\n\tp2 = head2;\n\twhile (p1 != end1 && p2 != end2)\n\t{\n\t\tif (p2 == NULL || p1->ch == p2->ch)\n\t\t{\n\t\t\tp1 = p1->succ;\n\t\t\tif (p2 == NULL)\n\t\t\t\tp2 = head2;\n\t\t\telse\n\t\t\t\tp2 = p2->succ;\n\t\t}\n\t\telse\n\t\t{\n\t\t\tp2 = p2->next;\n\t\t}\n\t}\n\tif (p2 == end2)\t\t\/\/\u5224\u65ad\u662f\u5426\u5339\u914d\u6210\u529f\n\t{\n\t\tcout << \"Succeed ! The Left Of The String is = \";\n\t\tGetLeftString(p1);\n\t}\n\telse\n\t{\n\t\tcout << \"Failed !\" << endl << endl;\n\t}\n}\n\nvoid STRING::Print()\t\t\/\/\u8f93\u51fa\u4e3b\u4e32\u548c\u6a21\u5f0f\u4e32\u7684\u5185\u5bb9\n{\n\tcout << \"Print Called !\" << endl << endl;\n\tif (head1 == NULL)\n\t{\n\t\tcout << \"No Data In MainString !\" << endl << endl;\n\t}\n\telse\n\t{\n\t\tcout << \"MainString = \";\n\t\tp1 = head1;\n\t\twhile (p1 != end1)\n\t\t{\n\t\t\tcout << p1->ch;\n\t\t\tp1 = p1->succ;\n\t\t}\n\t\tcout << endl << endl;\n\t}\n\tif (head2 == NULL)\n\t{\n\t\tcout << \"No Data In SubString !\" << endl << endl;\n\t}\n\telse\n\t{\n\t\tcout << \"SubString = \";\n\t\tp2 = head2;\n\t\twhile (p2 != NULL)\n\t\t{\n\t\t\tcout << p2->ch;\n\t\t\tp2 = p2->succ;\n\t\t}\n\t\tcout << endl << endl;\n\t}\n}\n\nvoid STRING::GetNext()\t\t\/\/\u5f97\u5230\u6a21\u5f0f\u4e32\u7684next\u503c\n{\n\tp1 = head2;\n\tp2 = head2->next = NULL;\n\twhile (p1->succ != end2)\n\t{\n\t\tif (p2 == NULL || p1->ch == p2->ch)\n\t\t{\n\t\t\tp1 = p1->succ;\n\t\t\tif (p2 == NULL)\n\t\t\t\tp2 = head2;\n\t\t\telse\n\t\t\t\tp2 = p2->succ;\n\t\t\tif (p2 != p2->next)\n\t\t\t\tp1->next = p2;\n\t\t\telse\n\t\t\t\tp2 = p2->next;\n\t\t}\n\t\telse\n\t\t{\n\t\t\tp2 = p2->next;\n\t\t}\n\t}\n}\n\nvoid STRING::GetLeftString(NODE *p)\t\t\/\/\u8f93\u51fa\u5339\u914d\u6210\u529f\u540e\u4e3b\u4e32\u4e2d\u5269\u4e0b\u7684\u90e8\u5206\n{\n\twhile (p != end1)\n\t{\n\t\tcout << p->ch;\n\t\tp = p->succ;\n\t}\n\tcout << endl << endl;\n}\n\nvoid STRING::ReMove(NODE *p)\t\t\/\/\u9500\u6bc1\u5b57\u7b26\u4e32\u6240\u5360\u7684\u5185\u5b58\n{\n\tif (p == NULL)\n\t\treturn;\n\telse\n\t{\n\t\tReMove(p->succ);\n\t\tdelete p;\n\t}\n}\n\n<\/code><\/pre>\n\n\n\n
main.cpp<\/p>\n\n\n\n
#include<iostream>\n#include\"head.h\"\nusing namespace std;\n\nint main()\n{\n\tchar choice;\n\tSTRING str;\n\twhile (1)\n\t{\n\t\tcout << \"Your Choice Please ?\" << endl << endl << \"1 . SetMainString\"\n\t\t\t\t<< endl << \"2 . SetSubString\" << endl << \"3 . KMP\" << endl\n\t\t\t\t<< \"4 . Print\" << endl << \"5 . Quit\" << endl << endl;\n\t\tcin >> choice;\n\t\tsystem(\"cls\");\n\t\tswitch (choice)\n\t\t{\n\t\tcase '1':\n\t\t\tstr.GetMainString();\n\t\t\tbreak;\n\t\tcase '2':\n\t\t\tstr.GetSubstring();\n\t\t\tbreak;\n\t\tcase '3':\n\t\t\tstr.KMP();\n\t\t\tcin.get();\n\t\t\tcin.get();\n\t\t\tbreak;\n\t\tcase '4':\n\t\t\tstr.Print();\n\t\t\tcin.get();\n\t\t\tcin.get();\n\t\t\tbreak;\n\t\tcase '5':\n\t\t\treturn 0;\n\t\t\tbreak;\n\t\tdefault:\n\t\t\tcout << \"No Such Choice !\" << endl << endl;\n\t\t\tcin.get();\n\t\t\tcin.get();\n\t\t\tbreak;\n\t\t}\n\t\tsystem(\"cls\");\n\t}\n\n}\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
\u5199\u8fd9\u4e2a\u7ea0\u7ed3\u4e86\u5f88\u4e45\uff0c\u8001\u662f\u4f1a\u6709\u67d0\u4e2a\u73af\u8282\u51fa\u95ee\u9898\u3002\u5148\u662f\u5728\u5904\u7406\u4e32\u7684\u7ed3\u675f\u6807\u5fd7\u7684\u95ee\u9898\u4e0a\uff0c\u8001\u662f\u4f1a\u8ddf\u5176\u4ed6\u7684\u5224\u65ad\u6761\u4ef6\u51b2\u7a81\u9020\u6210\u63d0\u524d\u9000\u51fa\uff0c\u800c\u4e14\u65e0\u8bba\u4e3b\u4e32\u548c\u6a21\u5f0f\u4e32\u60c5\u51b5\u5982\u4f55\u7ed3\u679c\u603b\u662fsucce…<\/p>\n
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