add possibility to print a set to a string

Assignment_2/lib/Node.cpp

@@ -3,13 +3,13 @@
 
 Node::Node(int element){
     data = element;
-    is_dummy = false;
+    dummy = false;
     deleted = false;
 }
 
 Node* Node::Dummy(){
     Node* n = new Node(0);
-    n->is_dummy = true;
+    n->dummy = true;
     return n;
 }
 
@@ -19,12 +19,12 @@ bool Node::is_smaller_than(Node* n) {
 
 bool Node::is_smaller_than(int n) {
     // Everything is smaller than a dummy -> false
-    return  this->data < n && !this->is_dummy;
+    return  this->data < n && !this->dummy;
 }
 
 bool Node::is_equal(int n) {
     // Dummies are not equal to any number -> false
-    return  this->data == n && !this->is_dummy;
+    return  this->data == n && !this->dummy;
 }
 
 void Node::lock() {
@@ -32,4 +32,12 @@ void Node::lock() {
 } 
 void Node::unlock() {
     this->mut.unlock();
+}
+
+bool Node::is_dummy() {
+    return dummy;
+}
+
+int Node::get_data(){
+    return data;
 }

Assignment_2/lib/Node.h

@@ -5,7 +5,7 @@
 class Node { 
     protected:
         int data; 
-        bool is_dummy;
+        bool dummy;
         std::mutex mut;
 
     public:
@@ -21,4 +21,6 @@ class Node {
         bool is_smaller_than(int n);
         bool is_smaller_than(Node* n);
         bool is_equal(int n);
+        bool is_dummy();
+        int get_data();
 };

Assignment_2/lib/Set.cpp

@@ -1,6 +1,9 @@
 #include "Set.h"
 #include "Node.h"
 
+#include <iostream>
+#include<sstream>
+
 Set::Set(std::string _name){
     name = _name;
     first = Node::Dummy();
@@ -11,3 +14,13 @@ bool Set::add(int element) { return false; }
 bool Set::rmv(int element) { return false; }
 bool Set::ctn(int element) { return false; }
 std::string Set::get_name() { return name; }
+
+std::string Set::print_set(){
+    Node* c = this->first->next;
+    std::stringstream ss;
+    while (!c->is_dummy()) {
+        ss << c->get_data() << " ";
+        c = c->next;
+    }
+    return ss.str();
+}

Assignment_2/lib/Set.h

@@ -12,4 +12,5 @@ class Set {
         bool rmv(int element);
         bool ctn(int element);
         std::string get_name();
+        std::string print_set();
 };