made template function for flattening matrix

HW10/ParseMatrixForMPI.h

@@ -0,0 +1,33 @@
+//
+// Created by Brady Bodily on 3/29/20.
+//
+#include <vector>
+#ifndef HW10_PARSEMATRIXFORMPI_H
+#define HW10_PARSEMATRIXFORMPI_H
+namespace matrixTools
+{
+    template <typename T>
+    std::vector<std::vector<T>> UnflattenMatrix(std::vector<T> origianlVector, int rowSize, int columnSize)
+    {
+        std::vector<std::vector<T>> matrix(columnSize, std::vector<T>(rowSize, 0));
+        for (int i = 0; i < columnSize; i++) {
+            for (int j = 0; j < rowSize; j++) {
+                matrix[i][j] = origianlVector[i + j];
+            }
+        }
+        return matrix;
+    }
+
+    template <typename T>
+    std::vector<T> FlattenMatrix(std::vector<std::vector<T>> matrix)
+    {
+        std::vector<T> rVector(matrix.size() * matrix[0].size(), 0);
+        for (int i = 0; i < matrix.size(); i++) {
+            for (int j = 0; j < matrix[0].size(); j++) {
+                rVector[i + j] = matrix[i][j];
+            }
+        }
+        return rVector;
+    }
+}
+#endif //HW10_PARSEMATRIXFORMPI_H