Revert "Deleted manual input function"

This reverts commit fa123e0fb0.
2024-10-07 21:06:00 +05:00
parent 9b67db3629
commit 262894d00d
13 changed files with 1017 additions and 1 deletions
@@ -0,0 +1,82 @@
+#include "elimination.h"
+#include "math.h"
+
+FracturedMatrix::FracturedMatrix(const FracturedMatrix& other) : A(other.A), C(other.C), b(other.b), pivot_column_index(other.pivot_column_index), pivot_row_index(other.pivot_row_index) {}
+FracturedMatrix::FracturedMatrix(Matrix A, Vector C, Vector b, int pivot_column_index, int pivot_row_index) : A(A), C(C), b(b), pivot_column_index(pivot_column_index), pivot_row_index(pivot_row_index) {}
+FracturedMatrix& FracturedMatrix::operator=(const FracturedMatrix& other) {
+    A = other.A;
+    C = other.C;
+    b = other.b;
+    pivot_column_index = other.pivot_column_index;
+    pivot_row_index = other.pivot_row_index;
+    return *this;
+}
+
+DestroyMatrix disassembleGeneralMatrix(Matrix& generalMatrix) {
+    int rows = generalMatrix.getRows();
+    int cols = generalMatrix.getColumns();
+
+    Matrix A(rows - 1, cols - 1);
+    Vector C(cols - 1);
+    Vector b(rows - 1);
+
+    for (int j = 0; j < cols - 1; ++j) {
+        C[j] = generalMatrix[0][j];
+    }
+
+    for (int i = 1; i < rows; ++i) {
+        b[i - 1] = generalMatrix[i - 1][cols - 1];
+    }
+
+    for (int i = 1; i < rows; ++i) {
+        for (int j = 0; j < cols - 1; ++j) {
+            A[i - 1][j] = generalMatrix[i][j];
+        }
+    }
+
+    return {A, C, b};
+}
+
+Matrix createGeneralMatrix(Matrix& A, Vector& C, Vector& b) {
+    Matrix generalMatrix(A.getRows() + 1, A.getColumns() + 1);
+    for (int i = 0; i < A.getColumns(); i++) {
+        generalMatrix[0][i] = C[i];
+    }
+
+    // For objective function (j=0) the value is set to zero automatically
+    for (int j = 1; j < A.getRows() + 1; j++) {
+        generalMatrix[j][A.getColumns()] = b[j-1];
+    }
+
+    for (int i = 0; i < A.getRows(); i++) {
+        for (int j = 0; j < A.getColumns(); j++) {
+            generalMatrix[i + 1][j] = A[i][j];
+        }
+    }
+
+    return generalMatrix;
+}
+
+void elimination(Matrix& generalMatrix, int pivot_row_index, int pivot_column_index) {
+
+    int rows = generalMatrix.getRows();
+    int cols = generalMatrix.getColumns();
+
+    double pivotElement = generalMatrix[pivot_row_index][pivot_column_index];
+
+    for (int j = 0; j < cols; ++j) {
+        generalMatrix[pivot_row_index][j] /= pivotElement;
+    }
+
+    for (int i = 0; i < rows; ++i) {
+        if (i == pivot_row_index) 
+            continue;
+
+        double pivotColumnCoefficient = generalMatrix[i][pivot_column_index];
+
+        for (int j = 0; j < cols; ++j) {
+            generalMatrix[i][j] -= pivotColumnCoefficient * generalMatrix[pivot_row_index][j];
+        }
+    }
+}
+