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something.cpp
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something.cpp
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#include<iostream>
#include<fstream>
#include<string>
using namespace std;
struct node
{
string data;
node * next;
};
struct list
{
node * start;
list * next;
};
class TransactionLL
{
list * head;
list * temp;
list * temp1;
public:
TransactionLL();
~TransactionLL();
void insertlist();
void insertdata(string data);
void print();
};
void readInputFile (string inputFilePath);
void generateFirstItemSet(string LL_frequency);
void generateSecondItemSet(string frequency_outputfile);
void generateThirdItemSet(string frequency_outputfile);
int main()
{
readInputFile("GroceryStore.txt");
return 0;
}
TransactionLL::TransactionLL()
{
head = temp = temp1 = NULL;
}
TransactionLL::~TransactionLL()
{
if(head == NULL)
return;
while(head != NULL)
{
node * tempnode;
while(head->start != NULL)
{
tempnode = head->start;
head->start = head->start->next;
delete tempnode;
}
temp = head;
head = head->next;
delete temp;
}
head = temp = temp1 = NULL;
}
void TransactionLL::insertlist()
{
temp1 = new list;
temp1->start = NULL;
temp1->next = NULL;
if(head == NULL)
{
head = temp1;
return;
}
temp = head;
while(temp->next != NULL)
temp = temp->next;
temp->next = temp1;
}
void TransactionLL::insertdata(string data)
{
temp = head;
while(temp->next != NULL)
temp = temp->next;
node * tempnode;
tempnode = temp->start;
if(tempnode == NULL)
{
tempnode = new node;
tempnode->data = data;
tempnode->next = NULL;
temp->start = tempnode;
return;
}
while(tempnode->next != NULL)
tempnode = tempnode->next;
tempnode->next = new node;
tempnode = tempnode->next;
tempnode->data = data;
tempnode->next = NULL;
}
void TransactionLL::print()
{
if(head == NULL)
{
cout << "L1 = []" << endl;
return;
}
int i = 1;
temp = head;
node * tempnode;
while (temp != NULL)
{
cout << "L" << i << " = [ ";
tempnode = temp->start;
while (tempnode != NULL)
{
cout << tempnode->data;
if(tempnode->next != NULL)
{
cout << " , ";
}
tempnode = tempnode->next;
}
cout << " ]" << endl;
i++;
temp = temp->next;
}
}
void readInputFile (string inputFilePath)
{
ifstream fin;
fin.open(inputFilePath);
string line;
string data;
TransactionLL l1;
while(fin)
{
getline(fin,line);
l1.insertlist();
for(int i = 0;i < line.length();i++)
{
if(line[i] == ',')
{
l1.insertdata(data);
data = "";
continue;
}
data += line[i];
}
l1.insertdata(data);
data = "";
}
l1.print();
}