added metis converter

CMakeLists.txt

@@ -33,3 +33,6 @@ add_executable(Memory_Tester src/test/memory-tester.cpp src/partitioning.h src/l
         src/parallel_partitioning.cpp src/parallel_coarsening.cpp src/loader.cpp src/parallel_kernighanLin.cpp
         src/output.cpp src/Graph.h src/Graph.cpp
         src/clusterCutSize.h src/clusterCutSize.cpp src/output.cpp)
+
+add_executable(MetisConverter src/tools/metis_converter.cpp 
+                src/loader.cpp src/Graph.cpp)

src/tools/metis_converter.cpp

@@ -0,0 +1,37 @@
+#include <fstream>
+#include <iostream>
+#include <string>
+#include "../partitioning.h"
+
+int main(int argc, char** argv) {
+    if (argc != 3) {
+        std::cout << "Usage:" << std::endl << argv[0] << " <input file> <output file>" << std::endl;
+        return 1;
+    }
+
+    std::cout << "Loading from file" << std::endl;
+    auto graph = loadFromFile(std::string(argv[1]), 4);
+
+    std::ofstream out(argv[2]); // open the file in text mode
+
+    std::cout << "Writing file" << std::endl;
+    out << graph->V() << " " << graph->E() << " 011" << std::endl;
+
+    for (auto node : graph->nodes) {
+        out << node->weight;
+        for (auto edge : node->edges) {
+            out << " ";
+            auto node1 = edge->node1.lock();
+
+            if (node1->id != node->id)
+                out << node1->id + 1;
+            else
+                out <<edge->node2.lock()->id + 1;
+
+            out << " " << edge->weight;
+        }
+        out << std::endl;
+    }
+
+    out.close();
+}