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Change matrix multiplication

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Guilherme Werner
2023-06-18 15:00:34 -03:00
parent 264e18824d
commit 597990c972
1 changed files with 14 additions and 15 deletions
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29
Source/Graph.h
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@ -88,27 +88,26 @@ public:
Graph *ToTransitiveClosure(); Graph *ToTransitiveClosure();
public: public:
static vector<vector<int>> MultiplyIncidenceMatrix(const vector<vector<int>> &left, const vector<vector<int>> &right) static vector<vector<int>> MultiplyIncidenceMatrix(const vector<vector<int>> &matrix1, const vector<vector<int>> &matrix2)
{ {
int rows1 = left.size(); int rows1 = matrix1.size();
int cols1 = left[0].size(); int cols1 = matrix1[0].size();
int rows2 = right.size(); int rows2 = matrix2.size();
int cols2 = right[0].size(); int cols2 = matrix2[0].size();
// Cria a matriz de resultado com o número de linhas de matrix1 e o número de colunas de matrix2 // Cria uma matriz resultante com o tamanho apropriado
vector<vector<int>> result(rows1 * rows2, vector<int>(cols1 * cols2, 0)); vector<vector<int>> result(rows1, vector<int>(cols2, 0));
// Realiza a multiplicação tensorial das matrizes de incidência // Realiza a multiplicação das matrizes
for (int i = 0; i < rows1; i++) for (auto i = 0; i < rows1; i++)
{ {
for (int j = 0; j < cols1; j++) for (auto j = 0; j < cols2; j++)
{ {
for (int k = 0; k < rows2; k++) result[i][j] = 0;
for (auto k = 0; k < rows1; k++)
{ {
for (int l = 0; l < cols2; l++) result[i][j] += matrix1[i][k] * matrix2[k][j];
{
result[i * rows2 + k][j * cols2 + l] = left[i][j] * right[k][l];
}
} }
} }
} }