OCR

#include <iostream>
using namespace std;
#include "HandDigit.h"
#include <fstream>
struct Node
{
int arr[28*28];
int N;
Node *next;
};
int main ()
{
int i=0;
int x=0;
Node *list=NULL;
ifstream indata;
indata.open("train_1_5.txt");
if(!indata)
{
cout << "Error: file could not be opened" << endl;
}
cout <<"loading......"<<endl;
while (i<10006)
{
Node *newNode=new Node;
if (i==0)
{
list=newNode;
newNode->next=NULL;
}
else
{
newNode->next=list;
list=newNode;
}
for (x=0;x<28*28;x++)
{
indata >> newNode->arr[x];
}
indata >> newNode->N;
i++;
}
int k;
int ONES=0;
int ones=0;
int MIN=28*28;
cout<<"enter a number: ";
cin>>k;
int bin[28*28];
for (int j=0;j<k;j++)
{
getDigit(bin);
Node *ptr=list;
Node *digit=list;
for (int f=0;f<28*28;f++)
{
if (bin[f]==1)
{
ONES++;
}
}
int i=0;
while (i<10006)
{
for (int m=0;m<28*28;m++)
{
if (ptr->arr[m]==1)
{
ones++;
}
}
int DIFF=abs(ones-ONES);
if (DIFF<MIN)
{
MIN=DIFF;
digit=ptr;
}
i++;
ptr=ptr->next;
ones=0;
ONES=0;
}
cout<<"you have entered :"<<digit->N<<endl;
}
return 0;
}

C++ Lazy deletion

#include <iostream>
#include <string>
using namespace std;
struct Node
{
int data;
bool mark;
Node *next;
};
void prepend(int x , int m, Node* &p)
{
if(m == -1 && p == NULL)
{
p = new Node;
p->data = x;
p->mark = false;
p->next = NULL;
}
else
{
Node *New = new Node;
New->data = x;
New->mark = false;
New->next = p;
p = New;
}
}
void remove(int y, Node* &p)
{
for(int i = 0; i < y; i++)
{
while(p->mark)
p = p->next;
p = p->next;
}
while(p->mark)
p = p->next;
p->mark = true;

}
void Delete(Node* &head)
{
Node* p = head;
Node* pprev;
Node* temp;
while(head != NULL && head->mark)
{
temp = head;
head = head->next;
delete temp;
p = head;
pprev = head;
}
while(p != NULL)
{
if(p->mark)
{
pprev->next = p->next;
temp = p;
p = p->next;
delete temp;
}
else
{
pprev = p;
p = p->next;
}
}
}
void clear (Node* &p)
{
Node* temp;
while(p != NULL)
{
temp = p;
p = p->next;
delete temp;
}
}
int main ()
{
string x;
int y , m = -1 , n = 0;
Node * head;
head = NULL;
Node * p;
while(x != "end")
{
cin >> x;
if(x != "end" && (x == "prepend" || x == "remove"))
cin >> y;
if(x == "prepend")
{
prepend(y , m , head);
p = head;
while(p != NULL)
{
cout << p->data;
if(p->mark)
cout << '*';
if(p->next != NULL)
cout << ' ';
p = p->next;
}
cout << endl;
m++;
}

else if(x == "remove" && y <= m && m > -1)
{
m--;
p = head;
remove(y , p);
n++;
p = head;
if(n%3 != 0)
{
while(p != NULL)
{
cout << p->data;
if(p->mark)
cout << '*';
if(p->next != NULL)
cout << ' ';
p = p->next;
}
cout << endl;
}
}
if (n%3 == 0 && n !=0 && x != "end" && x != "prepend")
{
if(m == -1)
head = NULL;
Delete(head);
p = head;
while(p != NULL)
{
cout << p->data;
if(p->next != NULL)
cout << ' ';
p = p->next;
}
if(head != NULL)
cout << endl;
if(m == -1)
head = new Node;
}

}
if(m > -1)
clear(head);
return 0;
}