In C++ please, do not alter node.h Step 1: Inspect the Node.h file Inspect the class declaration for a doubly-linked list node in Node.h. The Node class has three member variables: a double data value, a pointer to the next node, and a pointer to the previous node. Each member variable is protected. So code outside of the class must use the provided getter and setter member functions to get or set a member variable. Node.h is read only, since no changes are required. Step 2: Implement the Insert() member function A class for a sorted, doubly-linked list is declared in SortedNumberList.h. Implement the SortedNumberList class's Insert() member function. The function must create a new node with the parameter value, then insert the node into the proper sorted position in the linked list. Ex: Suppose a SortedNumberList's current list is 23 47.25 86, then Insert(33.5) is called. A new node with data value 33.5 is created and inserted between 23 and 47.25, thus preserving the list's sorted order and yielding: 23 35.5 47.25 86 Step 3: Test in develop mode Code in main() takes a space-separated list of numbers and inserts each into a SortedNumberList. The list is displayed after each insertion. Ex: If input is 77 15 -42 63.5 then output is: List after inserting 77: 77 List after inserting 15: 15 77 List after inserting -42: -42 15 77 List after inserting 63.5: -42 15 63.5 77 Try various program inputs, ensuring that each outputs a sorted list. Step 4: Implement the Remove() member function Implement the SortedNumberList class's Remove() member function. The function takes a parameter for the number to be removed from the list. If the number does not exist in the list, the list is not changed and false is returned. Otherwise, the first instance of the number is removed from the list and true is returned. Uncomment the commented-out part in main() that reads a second input line and removes numbers from the list. Test in develop mode to ensure that insertion and removal both work properly, then submit code for grading. Ex: If input is 84 72 19 61 19 84 then output is: List after inserting 84: 84 List after inserting 72: 72 84 List after inserting 19: 19 72 84 List after inserting 61: 19 61 72 84 List after removing 19: 61 72 84 List after removing 84: 61 72 Code below: main.cpp #include #include #include #include "Node.h" #include "SortedNumberList.h" using namespace std; void PrintList(SortedNumberList& list); vector SpaceSplit(string source); int main(int argc, char *argv[]) { // Read the line of input numbers string inputLine; getline(cin, inputLine); // Split on space character vector terms = SpaceSplit(inputLine); // Insert each value and show the sorted list's contents after each insertion SortedNumberList list; for (auto term : terms) { double number = stod(term); cout << "List after inserting " << number << ": " << endl; list.Insert(number); PrintList(list); } /* // Read the input line with numbers to remove getline(cin, inputLine); terms = Space.

1. In C++ please, do not alter node.h
Step 1: Inspect the Node.h file
Inspect the class declaration for a doubly-linked list node in Node.h. The Node class has three
member variables:
a double data value,
a pointer to the next node, and
a pointer to the previous node.
Each member variable is protected. So code outside of the class must use the provided getter and
setter member functions to get or set a member variable.
Node.h is read only, since no changes are required.
Step 2: Implement the Insert() member function
A class for a sorted, doubly-linked list is declared in SortedNumberList.h. Implement the
SortedNumberList class's Insert() member function. The function must create a new node with
the parameter value, then insert the node into the proper sorted position in the linked list. Ex:
Suppose a SortedNumberList's current list is 23 47.25 86, then Insert(33.5) is called. A new
node with data value 33.5 is created and inserted between 23 and 47.25, thus preserving the list's
sorted order and yielding: 23 35.5 47.25 86
Step 3: Test in develop mode
Code in main() takes a space-separated list of numbers and inserts each into a SortedNumberList.
The list is displayed after each insertion. Ex: If input is
77 15 -42 63.5
then output is:
List after inserting 77:
77 List after inserting 15:
15 77
List after inserting -42:
-42 15 77
List after inserting 63.5:
-42 15 63.5 77
Try various program inputs, ensuring that each outputs a sorted list.
Step 4: Implement the Remove() member function
Implement the SortedNumberList class's Remove() member function. The function takes a
parameter for the number to be removed from the list. If the number does not exist in the list, the
list is not changed and false is returned. Otherwise, the first instance of the number is removed
from the list and true is returned.

2. Uncomment the commented-out part in main() that reads a second input line and removes
numbers from the list. Test in develop mode to ensure that insertion and removal both work
properly, then submit code for grading. Ex: If input is
84 72 19 61 19 84
then output is:
List after inserting 84:
84
List after inserting 72:
72 84
List after inserting 19:
19 72 84
List after inserting 61:
19 61 72 84
List after removing 19:
61 72 84
List after removing 84:
61 72
Code below:
main.cpp
#include
#include
#include
#include "Node.h"
#include "SortedNumberList.h"
using namespace std;
void PrintList(SortedNumberList& list);
vector SpaceSplit(string source);
int main(int argc, char *argv[]) {
// Read the line of input numbers
string inputLine;
getline(cin, inputLine);
// Split on space character
vector terms = SpaceSplit(inputLine);
// Insert each value and show the sorted list's contents after each insertion
SortedNumberList list;

3. for (auto term : terms) {
double number = stod(term);
cout << "List after inserting " << number << ": " << endl;
list.Insert(number);
PrintList(list);
}
/*
// Read the input line with numbers to remove
getline(cin, inputLine);
terms = SpaceSplit(inputLine);
// Remove each value
for (auto term : terms) {
double number = stod(term);
cout << "List after removing " << number << ": " << endl;
list.Remove(number);
PrintList(list);
}
*/
return 0;
}
// Prints the SortedNumberList's contents, in order from head to tail
void PrintList(SortedNumberList& list) {
Node* node = list.head;
while (node) {
cout << node->GetData() << " ";
node = node->GetNext();
}
cout << endl;
}
// Splits a string at each space character, adding each substring to the vector
vector SpaceSplit(string source) {
vector result;
size_t start = 0;
for (size_t i = 0; i < source.length(); i++) {
if (' ' == source[i]) {
result.push_back(source.substr(start, i - start));

4. start = i + 1;
}
}
result.push_back(source.substr(start));
return result;
}
Node.h (no change)
#ifndef NODE_H
#define NODE_H
class Node {
protected:
double data;
Node* next;
Node* previous;
public:
// Constructs this node with the specified numerical data value. The next
// and previous pointers are each assigned nullptr.
Node(double initialData) {
data = initialData;
next = nullptr;
previous = nullptr;
}
// Constructs this node with the specified numerical data value, next
// pointer, and previous pointer.
Node(double initialData, Node* nextNode, Node* previousNode) {
data = initialData;
next = nextNode;
previous = previousNode;
}
virtual ~Node() {
}
// Returns this node's data.
virtual double GetData() {
return data;
}

5. // Sets this node's data.
virtual void SetData(double newData) {
data = newData;
}
// Gets this node's next pointer.
virtual Node* GetNext() {
return next;
}
// Sets this node's next pointer.
virtual void SetNext(Node* newNext) {
next = newNext;
}
// Gets this node's previous pointer.
virtual Node* GetPrevious() {
return previous;
}
// Sets this node's previous pointer.
virtual void SetPrevious(Node* newPrevious) {
previous = newPrevious;
}
};
#endif
SortedNumberList.h
#ifndef SORTEDNUMBERLIST_H
#define SORTEDNUMBERLIST_H
#include "Node.h"
class SortedNumberList {
private:
// Optional: Add any desired private functions here
public:
Node* head;
Node* tail;
SortedNumberList() {
head = nullptr;
tail = nullptr;

6. }
// Inserts the number into the list in the correct position such that the
// list remains sorted in ascending order.
void Insert(double number) {
// Your code here
}
// Removes the node with the specified number value from the list. Returns
// true if the node is found and removed, false otherwise.
bool Remove(double number) {
// Your code here (remove placeholder line below)
return false;
}
};
#endif