{"id":150,"date":"2021-08-30T03:43:57","date_gmt":"2021-08-30T03:43:57","guid":{"rendered":"http:\/\/www.gislxz.top\/?p=150"},"modified":"2023-09-26T07:35:11","modified_gmt":"2023-09-26T07:35:11","slug":"%e6%95%b0%e6%8d%ae%e7%bb%93%e6%9e%84%ef%bc%883%ef%bc%89%e6%95%b0%e7%bb%84%e5%92%8c%e7%9f%a9%e9%98%b5","status":"publish","type":"post","link":"https:\/\/www.gislxz.com\/index.php\/2021\/08\/30\/%e6%95%b0%e6%8d%ae%e7%bb%93%e6%9e%84%ef%bc%883%ef%bc%89%e6%95%b0%e7%bb%84%e5%92%8c%e7%9f%a9%e9%98%b5\/","title":{"rendered":"\u6570\u636e\u7ed3\u6784\uff083\uff09\u6570\u7ec4\u548c\u77e9\u9635"},"content":{"rendered":"\n

\u4f20\u7edf\u4e8c\u7ef4\u6570\u7ec4\u662f\u4e2a\u6807\u51c6\u7684\u77e9\u9635\uff0c\u6bcf\u884c\u7684\u5143\u7d20\u6570\u91cf\u76f8\u540c<\/p>\n\n\n\n

int a[3][5];<\/code><\/pre>\n\n\n\n
\u4f7f\u7528\u6307\u9488\u6570\u7ec4\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u4e0d\u89c4\u5219\u4e8c\u7ef4\u6570\u7ec4<\/p>\n\n\n\n
#include <iostream>\nusing namespace std;\n\n#include <iostream>\nusing namespace std;\n \nint main()\n{\n \u00a0 \u00a0int numberOfRows = 5;\/\/\u884c\u6570\n \u00a0 \u00a0int length[] = { 5,3,4,5,7 };\/\/\u6bcf\u4e00\u884c\u7684\u957f\u5ea6\n \u00a0 \u00a0int** irregularArray = new int* [numberOfRows];\/\/\u5b9a\u4e49\u4e00\u4e2a\u6307\u9488\u6570\u7ec4\uff0c\u6570\u7ec4\u4e2d\u7684\u6307\u9488\u8fd8\u6ca1\u5206\u914d\n\t \u00a0\/\/int* irregularArray[] = new int* [numberOfRows];\u4e5f\u662f\u4e00\u6837\u7684\n \u00a0 \u00a0for (int i = 0; i < numberOfRows; i++) {\/\/\u7ed9\u6570\u7ec4\u91cc\u7684\u6307\u9488\u5206\u914d\u6307\u5b9a\u957f\u5ea6\u7684\u6570\u7ec4\n \u00a0 \u00a0 \u00a0 \u00a0irregularArray[i] = new int[length[i]];\n \u00a0 \u00a0}\n \u00a0 \u00a0irregularArray[1][2] = 2;\n \u00a0\t\/\/\u8bb0\u5f97delete\u6240\u6709new\u51fa\u6765\u7684\u4e1c\u897f\n \u00a0 \u00a0for (int i = 0; i < numberOfRows; i++) {\n \u00a0 \u00a0 \u00a0 \t delete []irregularArray[i];\n \u00a0 \u00a0}\n \u00a0\tdelete []irregularArray;\n}<\/code><\/pre>\n\n\n\n
\u4e0b\u9762\u5b9a\u4e49\u4e00\u4e2a\u77e9\u9635\u7c7bmatrix<\/p>\n\n\n\n
#pragma once\n#include <iostream>;\nusing namespace std;\ntemplate<class T>\nclass matrix\n{\n\tfriend ostream& operator<<(ostream& out, const matrix<T>& x) {x.output(out); return out;}\/\/\u91cd\u8f7d<<\npublic:\n\tmatrix(int theRows = 0, int theColumns = 0);\/\/\u6784\u9020\u51fd\u6570\n\tmatrix(T **a,int theRows = 0, int theColumns = 0);\/\/\u6784\u9020\u51fd\u6570\uff08\u4f7f\u7528\u6570\u7ec4\u8d4b\u503c\uff09\n\tmatrix(const matrix<T>&);\/\/\u6784\u9020\u51fd\u6570\uff08\u590d\u5236\uff09\n\t~matrix() { delete []element; };\/\/\u6790\u6784\u51fd\u6570\uff0c\u5220\u9664\u5b58\u653e\u5143\u7d20\u7684\u6570\u7ec4\n\tint rows() const { return theRows; }\/\/\u8fd4\u56de\u884c\u6570\n\tint columns() const { return theColumns; }\/\/\u8fd4\u56de\u5217\u6570\n\tmatrix<T> transposition();\/\/\u8f6c\u7f6e\n\tT& operator()(int i, int j)const;\/\/\u91cd\u8f7d()\uff0c\u901a\u8fc7\u6b64\u51fd\u6570\u4f7f\u7528\u4e8c\u7ef4\u7d22\u5f15\u8bbf\u95ee\u77e9\u9635\u5143\u7d20\n\tmatrix<T>& operator=(const matrix<T>&);\/\/\u91cd\u8f7d=\uff0c\u590d\u5236\u6bcf\u4e2a\u5143\u7d20\n\tmatrix<T> operator+(const matrix<T>&) const;\/\/\u91cd\u8f7d+\n\tmatrix<T> operator-(const matrix<T>&) const;\/\/\u91cd\u8f7d-\n\tmatrix<T> operator*(const matrix<T>&) const;\/\/\u91cd\u8f7d*\n\tvoid output(ostream& out) const;\/\/\u9010\u4e2a\u8f93\u51fa\u5143\u7d20\u503c\uff0c\u63d0\u4f9b\u7ed9<<\u91cd\u8f7d\u7528\nprivate:\n\tint theRows, theColumns;\/\/\u884c\u6570\u548c\u5217\u6570\n\tT* element;\/\/\u7528\u6765\u5b58\u50a8\u6570\u636e\u7684\u6570\u7ec4\n};<\/code><\/pre>\n\n\n\n
\u4e09\u79cd\u91cd\u8f7d\u51fd\u6570\uff0c\u6ce8\u610f\u52a8\u6001\u4e8c\u7ef4\u6570\u7ec4\u7684\u521b\u5efa\u4e0e\u8c03\u7528\u65b9\u6cd5<\/p>\n\n\n\n
\/\/matrix.cpp\n#include <iostream>;\n#include \"matrix.h\";\n\n\n\/*-------------\u6784\u9020\u51fd\u6570--------------------------*\/\ntemplate<class T>\nmatrix<T>::matrix(int theRows, int theColumns) {\n\tthis->theRows = theRows;\n\tthis->theColumns = theColumns;\n\telement = new T[theRows * theColumns];\/\/\u4e00\u7ef4\u6570\u7ec4\uff0c\u7528\u884c\u4e3b\u6620\u5c04\u8f6c\u6362\n}\n\n\/*-------------\u6784\u9020\u51fd\u6570\uff08\u590d\u5236\uff09-----------------*\/\ntemplate<class T>\nmatrix<T>::matrix(const matrix<T>& m) {\n\ttheRows = m.theRows;\n\ttheColumns = m.theColumns;\n\telement=new T[theRows * theColumns];\n\tcopy(m.element, m.element + theRows * theColumns, element);\/\/\u4f7f\u7528copy\u51fd\u6570\u83b7\u5f97\u88ab\u590d\u5236\u77e9\u9635\u6570\u7ec4\u7684\u503c\n}\n\n\/*-------------\u6784\u9020\u51fd\u6570\uff08\u5e76\u8d4b\u503c\uff09---------------*\/\ntemplate<class T>\nmatrix<T>::matrix(T **a, int theRows, int theColumns) {\n\tthis->theRows = theRows;\n\tthis->theColumns = theColumns;\n\telement = new T[theRows * theColumns];\n\tfor (int i = 0; i < theRows; i++)\n\t\tfor (int j = 0; j < theColumns; j++)\n\t\t\telement[i * theColumns + j] = a[i][j];\n}\n\n\/\/main.cpp\nint main()\n{\n\tint **a = new int*[5];\/\/\u521b\u5efa\u4e8c\u7ef4\u52a8\u6001\u6570\u7ec4\n\n        \/\/\u5206\u914d\u6bcf\u4e00\u884c\u7684\u6570\u7ec4\n \ta[0] = new int[5]{ 1,2,3,4,5 };\n\ta[1] = new int[5]{ 1,2,3,4,5 };\n\ta[2] = new int[5]{ 1,2,3,4,5 };\n\tmatrix<int>* m = new matrix<int>(a,3,5);\/\/\u521b\u5efamatrix\u5e76\u901a\u8fc7\u6570\u7ec4\u8d4b\u503c\n\n        delete []a[0];\n        delete []a[1];\n        delete []a[2];\n\tdelete []a;\/\/\u8bb0\u5f97\u5220\u9664\u52a8\u6001\u6570\u7ec4\n        delete m;\n\treturn 0;\n}<\/code><\/pre>\n\n\n\n
\u4e4b\u540e\u662f\u5404\u79cd\u8fd0\u7b97\u7b26\u91cd\u8f7d\uff0c\u8981\u7279\u522b\u6ce8\u610f\u54ea\u4e9b\u51fd\u6570\u8fd4\u56de\u7684\u662f\u5f15\u7528<\/p>\n\n\n\n
\u4ee5\u91cd\u8f7d\uff08\uff09\u4e3a\u4f8b\uff0c \u91cd\u8f7d\u540e\uff08\uff09\u8fd4\u56de\u77e9\u9635\u4e8c\u7ef4\u7d22\u5f15\u7684\u503c\uff0c\u8fd9\u91cc\u6211\u4eec\u8bbe\u7f6e\u77e9\u9635\u7684\u7d22\u5f15\u4ece1\u5f00\u59cb\u800c\u4e0d\u662f\u6570\u7ec4\u76840\u5f00\u59cb\uff0c\u7b26\u5408\u65e5\u5e38\u751f\u6d3b\u4e60\u60ef\u3002\u51fd\u6570\u5f88\u7b80\u5355\uff0c\u6362\u7b97\u4e00\u4e0b\u4e8c\u7ef4\u7d22\u5f15\u548c\u4e00\u7ef4\u6570\u7ec4\u7684\u6620\u5c04\u5173\u7cfb\u5c31\u884c<\/p>\n\n\n\n
template<class T>\nT& matrix<T>::operator()(int i, int j) const{\n\treturn element[(i - 1) * theColumns + j - 1];\/\/\u77e9\u9635\u7684\u7d22\u5f15\u4ece1\u5f00\u59cb\n}<\/code><\/pre>\n\n\n\n
\u91cd\u70b9\u662f\u51fd\u6570\u8fd4\u56de\u7684\u662f\u5f15\u7528\uff0c\u8fd9\u5c31\u4ee3\u8868\u6211\u4eec\u4e0d\u4ec5\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u51fd\u6570\u8bbf\u95ee\u5bf9\u5e94\u7684\u5143\u7d20\u503c\uff0c\u8fd8\u53ef\u4ee5\u76f4\u63a5\u6539\u53d8\u8fd9\u4e2a\u503c\uff0c\u8bf7\u770b\u4e0b\u9762\u7684\u793a\u4f8b      \u6ce8\uff1a\u8c03\u7528\uff08\uff09\u51fd\u6570\u65f6\u8bb0\u5f97\u7ed9\u524d\u9762 *m \u6253\u4e0a\u62ec\u53f7\uff0c\u8981\u4e0d\u7136\u4f1a\u62a5\u9519<\/p>\n\n\n\n
int main()\n{\n\tint **a = new int*[3];\n\ta[0] = new int[5]{ 1,2,3,4,5 };\n\ta[1] = new int[5]{ 1,2,3,4,5 };\n\ta[2] = new int[5]{ 1,2,3,4,5 };\n\tmatrix<int>* m = new matrix<int>(a,3,5);\n\tcout << (*m)(1, 1) << endl;\/\/\u83b7\u5f97\u77e9\u9635\uff081\uff0c1\uff09\u5904\u7684\u503c\n\t(*m)(1, 1) = 0;\n\tcout << (*m)(1, 1) << endl;\/\/\u6539\u5199\u77e9\u9635\uff081\uff0c1\uff09\u5904\u7684\u503c\n        delete []a[0];\n        delete []a[1];\n        delete []a[2];\n\tdelete[]a;\n        delete m;\n\treturn 0;\n}<\/code><\/pre>\n\n\n\n
\"\"
\u53ef\u4ee5\u770b\u5230\u6570\u503c\u88ab\u6210\u529f\u6539\u5199<\/figcaption><\/figure>\n\n\n\n
\u52a0\u6cd5\u548c\u51cf\u6cd5\u7b26\u53f7\u7684\u91cd\u8f7d<\/p>\n\n\n\n
\/*-------------\u52a0\u6cd5\uff08+\uff09\u91cd\u8f7d--------------------------*\/\ntemplate<class T>\nmatrix<T> matrix<T>::operator+(const matrix<T>& m) const {\/\/\u51fd\u6570\u8c03\u7528\u65f6\u4f7f\u7528\u5f15\u7528\u7b26&\u907f\u514d\u590d\u5236\u6d6a\u8d39\u6548\u7387\uff0c\u4f7f\u7528const\u9632\u6b62\u66f4\u6539\n\tmatrix<T> w(theRows, theColumns);\n\tfor (int i = 0; i < theRows * theColumns; i++)\n\t\tw.element[i] = element[i] + m.element[i];\/\/\u5bf9\u5e94\u4f4d\u7f6e\u7684\u503c\u76f8\u52a0\n\treturn w;\n}\n\n\/*-------------\u52b5\u5927\u5c0f\u662f\u5426\u5339\u914d\n\tmatrix<T> w(theRows, m.theColumns);\/\/\u5b9a\u4e49\u7ed3\u679c\u77e9\u9635\n\tint ct = 0, cm = 0, cw = 0;\/\/\u5b9a\u4e49\u6e38\u6807\n\n\tfor (int i = 1; i <= theRows; i++) {\n\t\tfor (int j = 1; j <= m.theColumns; j++) {\n\t\t\tT sum = element[ct] * m.element[cm];\n\t\t\t\/\/\u6839\u636e\u77e9\u9635\u5f62\u72b6\u52a0\u4e0a\u5176\u4ed6\u76f8\u4e58\u7684\u9879\n\t\t\tfor (int k = 2; k <= theColumns; k++) {\n\t\t\t\tct++;\n\t\t\t\tcm += m.theColumns;\/\/\u5411\u4e0b\u4e00\u884c\u5728\u4e00\u7ef4\u6570\u7ec4\u6620\u5c04\u5c31\u662f\u52a0\u4e00\u884c\u7684\u5143\u7d20\u4e2a\u6570\n\t\t\t\tsum += element[ct] * m.element[cm];\n\t\t\t}\n\t\t\tw.element[cw++] = sum;\/\/\u5148\u628a\u7ed3\u679c\u5b58\u5165\u6570\u7ec4\u6307\u5b9a\u4f4d\u7f6e\uff0ccw\u6e38\u6807\u518d\u52a01\n\t\t\tct -= theColumns - 1;\/\/\u7b2c\u4e00\u4e2a\u77e9\u9635\u6e38\u6807\u5411\u4e0b\u4e00\u884c\n\t\t\tcm = j;\/\/\u7b2c\u4e8c\u4e2a\u77e9\u9635\u7684\u6e38\u6807\u56de\u5230\u7b2c\u4e00\u884c\u5e76\u5411\u53f3\u79fb\u52a8\u4e00\u4f4d\n\t\t}\n\t\tct += theColumns;\/\/\u7b2c\u4e00\u4e2a\u77e9\u9635\u6e38\u6807\u5411\u4e0b\u4e00\u884c\n\t\tcm = 0;\/\/\u7b2c\u4e8c\u4e2a\u77e9\u9635\u6e38\u6807\u5f52\u96f6\n\t}\n\treturn w;\n}<\/code><\/pre>\n\n\n\n
#include <iostream>;\n#include \"matrix.h\";\n#include \"matrix.cpp\";\nusing namespace std;\nint main()\n{\n\tint **a = new int*[5];\n\ta[0] = new int[5]{ 1,2,3,4,5 };\n\ta[1] = new int[5]{ 1,2,3,4,5 };\n\ta[2] = new int& class=\"wp-block-code\">friend ostream& operator<<(ostream& out, const matrix<T>& x) {x.output(out); return out;}\/\/\u91cd\u8f7d<<<\/code><\/pre>\n\n\n\n
\u8fd9\u6837\u4f7f\u7528c<<\u8f93\u51fa\u5c31\u53ef\u4ee5\u9010\u4e2a\u6253\u5370\u77e9\u9635\u4e2d\u5143\u7d20\u7684\u503c<\/p>\n\n\n\n
\u4e4b\u540e\u662f\u77e9\u9635\u7684\u8f6c\u7f6e\uff0c\u65b0\u5efa\u4e00\u4e2a\u77e9\u9635\uff0c\u5f62\u72b6\u4ece\uff08rows,columns\uff09\u53d8\u6210 (columns,rows)\uff0c\u76f8\u5e94\u7684\u5143\u7d20\u6620\u5c04\u4e5f\u5f88\u660e\u663e<\/p>\n\n\n\n
template<class T>\nmatrix<T> matrix<T>::transposition() {\n\tmatrix<T> w(theColumns, theRows);\/\/\u5f62\u72b6\u53d8\u6362\n\tfor (int i = 0; i < w.theRows; i++)\n\t\tfor (int j = 0; j < w.theColumns; j++) {\n\t\t\tw.element[i * w.theColumns + j] = element[i+j*theColumns];\n\t\t}\n\treturn w;\n}<\/code><\/pre>\n\n\n\n
\u5269\u4e0b\u8fd8\u6709\u4e00\u4e2a\u77e9\u9635\u7684\u4e58\u6cd5\uff0c\u4e8c\u7ef4\u77e9\u9635\u7684\u4e58\u6cd5\u89c4\u5219\u8fd8\u662f\u76f8\u5bf9\u7b80\u5355\u7684<\/p>\n\n\n\n
\"\"
\u4e8c\u7ef4\u77e9\u9635\u4e58\u6cd5<\/figcaption><\/figure>\n\n\n\n
template<class T>\nmatrix<T> matrix<T>::operator*(const matrix<T>& m)const {\n\tif (theColumns != m.theRows) { abort(); };\/\/\u68c0\u67e5\u77e9\u9635\u5927\u5c0f\u662f\u5426\u5339\u914d\n\tmatrix<T> w(theRows, m.theColumns);\/\/\u5b9a\u4e49\u7ed3\u679c\u77e9\u9635\n\tint ct = 0, cm = 0, cw = 0;\/\/\u5b9a\u4e49\u6e38\u6807\n\n\tfor (int i = 1; i <= theRows; i++) {\n\t\tfor (int j = 1; j <= m.theColumns; j++) {\n\t\t\tT sum = element[ct] * m.element[cm];\n\t\t\t\/\/\u6839\u636e\u77e9\u9635\u5f62\u72b6\u52a0\u4e0a\u5176\u4ed6\u76f8\u4e58\u7684\u9879\n\t\t\tfor (int k = 2; k <= theColumns; k++) {\n\t\t\t\tct++;\n\t\t\t\tcm += m.theColumns;\/\/\u5411\u4e0b\u4e00\u884c\u5728\u4e00\u7ef4\u6570\u7ec4\u6620\u5c04\u5c31\u662f\u52a0\u4e00\u884c\u7684\u5143\u7d20\u4e2a\u6570\n\t\t\t\tsum += element[ct] * m.element[cm];\n\t\t\t}\n\t\t\tw.element[cw++] = sum;\/\/\u5148\u628a\u7ed3\u679c\u5b58\u5165\u6570\u7ec4\u6307\u5b9a\u4f4d\u7f6e\uff0ccw\u6e38\u6807\u518d\u52a01\n\t\t\tct -= theColumns - 1;\/\/\u7b2c\u4e00\u4e2a\u77e9\u9635\u6e38\u6807\u5411\u4e0b\u4e00\u884c\n\t\t\tcm = j;\/\/\u7b2c\u4e8c\u4e2a\u77e9\u9635\u7684\u6e38\u6807\u56de\u5230\u7b2c\u4e00\u884c\u5e76\u5411\u53f3\u79fb\u52a8\u4e00\u4f4d\n\t\t}\n\t\tct += theColumns;\/\/\u7b2c\u4e00\u4e2a\u77e9\u9635\u6e38\u6807\u5411\u4e0b\u4e00\u884c\n\t\tcm = 0;\/\/\u7b2c\u4e8c\u4e2a\u77e9\u9635\u6e38\u6807\u5f52\u96f6\n\t}\n\treturn w;\n}<\/code><\/pre>\n\n\n\n
#include <iostream>;\n#include \"matrix.h\";\n#include \"matrix.cpp\";\nusing namespace std;\n\nint main()\n{\n\tint **a = new int*[5];\n\ta[0] = new int[5]{ 1,2,3,4,5 };\n\ta[1] = new int[5]{ 1,2,3,4,5 };\n\ta[2] = new int[5]{ 1,2,3,4,5 };\n\tmatrix<int>* m1 = new matrix<int>(a,3,5);\n\tmatrix<int> m2 = *m1;\n\tm2 = m2.transposition();\/\/\u8f6c\u7f6e\n\tcout<<m2 * (*m1)<<endl;\/\/\u8f93\u51fa\u76f8\u4e58\u7ed3\u679c\n        delete []a[0];\n        delete []a[1];\n        delete []a[2];\n\tdelete[]a;\n        delete m1;\n\treturn 0;\n}<\/code><\/pre>\n\n\n\n
\"\"
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