Merge pull request #30 from Apolo151/all_paths

All paths finished, waiting for review

data/data.txt

@@ -1,6 +1,6 @@
 5
-Asyut - Cairo Train 250 Bus 450
+Giza - Cairo Metro 30 Bus 60 Uber 230
+Giza - Dahab Bus 500 Microbus 345
+Dahab - BeniSuef Microbus 200 Bus 315
 BeniSuef - Cairo Microbus 20 Bus 15
-BeniSuef - Dahab Microbus 200 Bus 315
-Dahab - Giza Bus 500 Microbus 345
-Giza - Cairo Metro 30 Bus 60 Uber 230
+Cairo - Asyut Train 250 Bus 450

include/all_paths.h

@@ -0,0 +1,31 @@
+#pragma once
+#include <vector>
+#include <unordered_map>
+#include <string>
+#include <utility>
+#include <map>
+#include "../include/map.h"
+#include "../include/map_helpers.h"
+using namespace std;
+class AllPaths
+{
+
+    public:
+        class Path
+        {
+            public:
+                int cost;
+                vector <string> pathVector;
+                Path(int cost, vector <string> pathVector);
+                bool operator<(const Path& other) const;
+        };
+
+        string source, destination;
+        unordered_map<string, unordered_map<string, Route>> graph;
+        vector <pair <int, vector <string>>> allPathsVector;
+        AllPaths(unordered_map<string, unordered_map<string, Route>> &graph, string, string);
+        void displayAllPaths();
+        void computeAllPaths();
+        void dfsAllPaths(string, map<string, bool>&, vector <string>, int);
+        bool comparePaths(Path&, Path&);
+};

src/all_paths.cpp

@@ -0,0 +1,77 @@
+#include "../include/all_paths.h"
+#include "../include/map.h"
+#include "../include/map_helpers.h"
+#include <unordered_map>
+#include <map>
+#include <string>
+#include <vector>
+#include <algorithm>
+#include <iostream>
+
+AllPaths::AllPaths(unordered_map<string, unordered_map<string, Route>> &graph, string source, string destination)
+{
+    this->graph = graph;
+    this->source = source;
+    this->destination = destination;
+}
+AllPaths::Path::Path(int weight, vector <string> curPath)
+{
+    this->cost = weight;
+    this->pathVector = curPath;
+}
+void AllPaths::computeAllPaths()
+{
+    map <string, bool> curVis;
+    curVis[this->source] = true;
+    dfsAllPaths(this->source, curVis, {}, 0);
+
+    sort(this->allPathsVector.begin(), this->allPathsVector.end());
+}
+bool AllPaths::Path::operator<(const Path& other) const 
+{
+        return this->cost < other.cost;
+}
+void AllPaths::displayAllPaths()
+{
+    for(int i = 0; i < allPathsVector.size(); i++)
+    {
+        cout << "Path # " << i + 1 << "\n";
+        cout << "The cost is: " << allPathsVector[i].first << '\n';
+        cout << "The route:\n";
+        for(auto &j : allPathsVector[i].second)
+            cout << j;
+        cout << '\n';
+    }
+}
+void AllPaths::dfsAllPaths(string node,  map <string, bool> &curVis,vector <string> curPath, int weight)
+{    map<transportations, string> enumToStr = {{BUS, "Bus"},
+                                          {MICROBUS, "Microbus"},
+                                          {TRAIN, "Train"},
+                                          {METRO, "Metro"},
+                                          {UBER, "Uber"}};
+
+    if(node == this->destination)
+    {
+        this->allPathsVector.push_back({weight, {curPath}});
+        return;
+    }
+    for(auto &it : this->graph[node]) // city, Route
+    {
+        // moving on unordered map
+        //it: city 2, Route
+        for(auto &i : it.second.roads)
+        {
+            if(curVis[it.first])
+                continue;
+            string tmp = "From " + node + " to " + it.first + " by " + enumToStr[i.transport] + " with cost: " + to_string(i.cost) + " " + "\n";
+            curPath.push_back(tmp);
+            curVis[it.first] = true;
+            dfsAllPaths(it.first, curVis, curPath, weight + i.cost);
+            curPath.pop_back();
+            curVis[it.first] = false;
+
+        }
+
+    }
+
+}

src/main.cpp

@@ -5,8 +5,9 @@
 #include "../include/map.h"
 
 
+#include "../include/all_paths.h"
 // Set Global Variables
-string DATA_PATH = "../data/data.txt";
+string DATA_PATH = "D:\\University\\2nd Year\\DS\\Project\\guide_me\\data\\data.txt";
 string ADMIN_NAME = "admin";
 string ADMIN_PASSWORD = "adminAdmin";
 using namespace std;
@@ -78,6 +79,9 @@ int main(int argc, char **argv) {
   user->deleteRoad(Road(name1, name2, RoadProperties(50, BUS)));
 
   dataManager.printAdjList();
+  AllPaths allPaths(Map::adjList, "Cairo", "Dahab");
+  allPaths.computeAllPaths();
+  allPaths.displayAllPaths();
   // user->deleteRoad()
   //  shutdown
   dataManager.saveData(DATA_PATH);