file input done

main.cpp

@@ -0,0 +1,112 @@
+#include <iostream>
+#include <fstream>
+#include <string>
+#include <vector>
+#include <tuple>
+
+using namespace std;
+
+// string -> tuple<int, int, int>
+
+pair<int,int> max_user_item(vector<tuple<int, int, int, int>> vetor){
+    pair<int,int> max_values;
+    int max_user = 0;
+    int max_item = 0;
+
+    for(unsigned i = 0; i < vetor.size(); i++){
+        if(get<0>(vetor[i]) > max_user){
+            max_user = get<0>(vetor[i]);
+        }    
+    }
+    for(unsigned i = 0; i < vetor.size(); i++){
+        if(get<1>(vetor[i]) > max_item){
+            max_item = get<0>(vetor[i]);
+            cout << max_item  << endl;
+        }    
+    }
+    max_values.first = max_user;
+    max_values.second = max_item;
+    return max_values;
+}
+
+vector<tuple<int, int, int, int>> process_inputs(string filename){
+    ifstream file;
+    file.open(filename);
+    string line;
+
+    std::vector<tuple<int, int, int, int>> inputs;
+    while(getline(file,line)){
+        if (line.find(",") != std::string::npos){
+            string work_line = line;
+            string delimiter = ":";
+            int user = atoi(work_line.substr(1, work_line.find(delimiter)-1).c_str());
+
+            work_line = line;
+            delimiter = ":";
+            string delimiter2 = ",";
+            int item = atoi(work_line.substr( work_line.find(delimiter)+2, work_line.find(delimiter2)).c_str());
+
+            work_line = line;
+            delimiter = ",";
+            work_line = work_line.substr(work_line.find(delimiter)+1, -1);
+            int rating = atoi(work_line.substr(0, work_line.find(delimiter)).c_str());
+
+            work_line = line;
+            delimiter = ",";
+            work_line = work_line.substr(work_line.find(delimiter)+1, -1);
+            int timestamp = atoi(work_line.substr(work_line.find(delimiter)+1, -1).c_str());
+            inputs.push_back(make_tuple(user, item, rating, timestamp));
+        }
+        else{
+            string work_line = line;
+            string delimiter = ":";
+            int user = atoi(work_line.substr(1, work_line.find(delimiter)-1).c_str());
+
+            work_line = line;
+            delimiter = ":";
+            string delimiter2 = ",";
+            int item = atoi(work_line.substr( work_line.find(delimiter)+2, work_line.find(delimiter2)).c_str());
+
+            int rating = 0;
+            int timestamp = 0;
+            inputs.push_back(make_tuple(user, item, rating, timestamp));
+        }
+    }
+
+    file.close();
+    return inputs;
+}
+
+int main(int argc, char *argv[])
+{    
+
+    string ratings_filename = argv[1];
+    string targets_filename = argv[2];
+
+    vector<tuple<int, int, int, int>> ratings= process_inputs(ratings_filename);
+    vector<tuple<int, int, int, int>> targets= process_inputs(targets_filename);
+
+    pair<int,int> max_values = max_user_item(ratings);
+
+    int** user_item_matrix = new int*[max_values.first + 1];
+    for (int i = 0; i < max_values.first + 1; i++)
+    {
+        user_item_matrix[i] = new int[max_values.second];
+        for (int j = 0; j < max_values.first; j++)
+        {
+            user_item_matrix[i][j] = 0;
+        }
+    }
+    for(unsigned i = 0; i < ratings.size(); i++){
+        // user_item_matrix[get<0>(ratings[i])][get<1>(ratings[i])] = get<2>(ratings[i]);
+    }
+
+    return 0;
+}
+// for(unsigned i = 0; i < ratings.size(); i++){
+//     cout << get<0>(ratings[i]) << "-" << get<1>(ratings[i]) <<  "-"  << get<2>(ratings[i]) <<  "-"  << get<3>(ratings[i]) << endl;    
+// }
+
+// for(unsigned i = 0; i < targets.size(); i++){
+//     cout << get<0>(targets[i]) << "-" << get<1>(targets[i]) << endl;    
+// }