C++ Program to Implement 2D Array Assignment Solution.

Instructions

Objective

Write a c++ program to implement 2D array in c++.

Requirements and Specifications

A. Write a program that prompts the user to enter the size of the rows and columns (between 2 and 10) for a matrix (2D array). The program will randomly fill the numbers 0 and 1 into the matrix, print the matrix, and output the minimum number of rectangles/squares that can cover all the 1 values in the matrix to the screen. The size of a rectangle/square is defined by the number of 1's in it. There may be two or more largest rectangles/squares of the same size, and values may "wrap around" or overlap to determine the size. Here are the rules in forming groups of ones:

Consider the consecutive 'ones' in the matrix and group them (green boxes).
Each group should contain the largest number of 'ones' and no blank cells.
The number of 'ones' in a group must be a power of 2 i.e. a group can contain:
Grouping is carried-on in decreasing order meaning, one must try to group for 8 (octet) first, then for 4 (quad), followed by 2 and lastly for 1 (isolated 'ones').
Grouping is done either horizontally or vertically or in terms of rectangles/squares. Diagonal grouping of 'ones' is not permitted.
The same element(s) may repeat in multiple groups only if this increases the size of the group.
The elements around the edges of the matrix, including the four corners, are adjacent and can be grouped together.

Source Code

 PROBLEM A
#include <iostream>
#include "Board.h"
using namespace std;
int getMaxHeight(int *M, int r, int c, int i, int j, int w)
{
 int j2 = -1;
 int i2;
 if (*(M + j * r + i) != 0) {
  for (j2 = j; j2 < c && *(M + j2 * r + i) != 0; j2++)
  {
   for (i2 = i; i2 - i < w; i2++)
   {
    if (*(M + r * j2 + i2) == 0)
     return j2 - j;
   }
  }
 }
 return j2 - j;
}
void findLargestRectangle(int *M, int r, int c, int i, int j, int *ei, int *ej)
{
 int max_width = 0;
 int max_height = 0;
 int max_area_covered = 0;
 *ei = *ej = -1;
 for (max_width = 0; max_width < r - i && (*(M + j * r + (i + max_width)) != 0); max_width++)
 {
  int area_covered;
  int height_i = getMaxHeight(M, r, c, i, j, max_width + 1);
  if (height_i > max_height)
  {
   max_height = height_i;
  }
  area_covered = height_i * (max_width + 1);
  if (area_covered > max_area_covered)
  {
   max_area_covered = area_covered;
   *ei = i + max_width;
   *ej = j + height_i - 1;
  }
 }
}
void printMatrix(int* M, int r, int c)
{
 cout << "Generated grid:" << endl << endl;
 for (int i = 0; i < r; i++)
 {
  for (int j = 0; j < c; j++)
  {
   cout << *(M + r * i + j) << " ";
  }
  cout << endl;
 }
}
int main()
{
 int j2;
 int i2;
 int i = 0;
 int j = 0;
 int total_rects = 0;
 // Ask for number of rows and columns
 int r, c;
 cout << "Enter number of rows (2-10): ";
 cin >> r;
 // check that value is between 2 and 10
 if (r < 2 || r > 10)
 {
  cout << "Number of rows must be between 2 and 10" << endl;
  exit(1);
 }
 cout << "Enter number of columns (2-10): ";
 cin >> c;
 // check that value is between 2 and 10
 if (c < 2 || c > 10)
 {
  cout << "Number of columns must be between 2 and 10" << endl;
  exit(1);
 }
 // Create a matrix and fill it
 int *M = (int*)malloc((r*c) * sizeof(int));
 for (int i = 0; i < r; i++)
 {
  for (int j = 0; j < c; j++)
  {
   *(M + r * i + j) = (int)(rand() % 2); // random between 0 and 1
  }
 }
 cout << endl;
 printMatrix(M, r, c);
 cout << endl;
 for (j = 0; j < c; j++) {
  for (i = 0; i < r; i++)
  {
   if (*(M + j * c + i) == 1) // the value is 1
   {
    findLargestRectangle(M, r, c, i, j, &i2, &j2);
    int start_i;
    int start_j;
    total_rects++;
    for (start_j = j; start_j <= j2; start_j++)
    {
     for (start_i = i; start_i <= i2; start_i++)
     {
      *(M + start_j * c + start_i) = 2;
     }
    }
    //printMatrix(M, r, c);
   }
  }
 }
 cout << "The minimum number of rectnagles/squares formed is " << total_rects << endl; // print
 return 0;
}
PROBLEM B
#include <iostream>
#include <fstream>
#include <string>
#include <sstream>
#include <vector>
using namespace std;
int main()
{
    // read file
 string file_name;
 cout << "Enter the file name: ";
 getline(cin, file_name);
 ifstream file(file_name);
 string line;
 int i = 0;
 getline(file, line);
 int n = stoi(line);
 string departure_city, destination_city;
 int departure_day, departure_month, departure_hour, departure_min;
 int departure_tz_hr, departure_tz_min;
 int destination_day, destination_month, destination_hour, destination_min;
 int destination_tz_hr, destination_tz_min;
 int departure_tz, destination_tz;
 int travel_time_hr, travel_time_min;
 int travel_time;
 int departure_time;
 for (int i = 0; i < n; i++)
 {
  int fid = 0;
  for (int j = 0; j < 6; j++)
  {
   getline(file, line);
   if (fid == 0) // departure city
   {
    departure_city = line;
   }
   else if (fid == 1) // departure time
   {
    departure_month = stoi(line.substr(0, 2));
    departure_day = stoi(line.substr(3, 5));
    departure_hour = stoi(line.substr(6, 8));
    departure_min = stoi(line.substr(9, 11));
    if (line.substr(9,11).at(0) == '0')
     departure_time = departure_hour * 100 + departure_min;
    else
     departure_time = departure_hour * 100 + departure_min;
    //departure_time = departure_hour * 100 + departure_min * 10;
   }
   else if (fid == 2) // departure time zone
   {
    char sign = line.at(0);
    int idx = line.find(':');
    departure_tz_hr = stoi(line.substr(1, idx));
    departure_tz_min = stoi(line.substr(idx + 1, line.length()));
    if (line.substr(idx + 1).length() == 2)
     departure_tz = departure_tz_hr * 100 + departure_tz_min;
    else
     departure_tz = departure_tz_hr * 100 + departure_tz_min * 10;
    if (sign == '-')
     departure_tz = -departure_tz;
   }
   else if (fid == 3)
    destination_city = line;
   else if (fid == 4)
   {
    char sign = line.at(0);
    int idx = line.find(':');
    destination_tz_hr = stoi(line.substr(1, idx));
    destination_tz_min = stoi(line.substr(idx + 1));
    if(line.substr(idx + 1).length() == 2)
     destination_tz = destination_tz_hr * 100 + destination_tz_min;
    else
     destination_tz = destination_tz_hr * 100 + destination_tz_min*10;
    if (sign == '-')
     destination_tz = -destination_tz;
   }
   else if (fid == 5)
   {
    char sign = line.at(0);
    int idx = line.find(':');
    travel_time_hr = stoi(line.substr(0, idx));
    travel_time_min = stoi(line.substr(idx + 1, line.length()));
    if (line.substr(idx + 1).length() == 2)
     travel_time = travel_time_hr * 100 + travel_time_min;
    else
     travel_time = travel_time_hr * 100 + travel_time_min*10;
   }
   fid++;
  }
  // Print info read
  /*
  cout << "Departure: " << departure_city << endl;
  cout << "Departure Time: " << departure_month << " " << departure_day << " " << departure_time << endl;
  cout << "Departure Timezone: " << departure_tz << endl;
  cout << "Destination: " << destination_city << endl;
  cout << "Destination Timezone: " << destination_tz << endl;
  cout << "Travel Time: " << travel_time << endl << endl;
  */
  cout << endl;
  cout << "Data Set " << (i + 1) << ":" << endl;
  cout << "Departs " << departure_city << " ";
  if(departure_month < 10)
   cout << "0" << departure_month << " " << departure_day << " ";
  else
   cout << departure_month << " " << departure_day << " ";
  if (departure_hour < 10)
   cout << "0" << departure_hour << ":";
  else
   cout << departure_hour << ":";
  if (departure_min < 10)
   cout << "0" << departure_min << endl;
  else
   cout << departure_hour << endl;
  // Now calculate
  // take departure time and convert to UTC+00
  int departure_UTC = departure_time - departure_tz;
  // calculate arrival time
  int arrival_UTC = departure_UTC + travel_time;
  // now convert to the destination timezone
  int arrival_time = arrival_UTC + destination_tz;
  int days = 0;
  while (arrival_time > 2359)
  {
   arrival_time -= 2400;
   days++;
  }
  int arrival_hour = arrival_time / 100;
  int arrival_min = arrival_time - arrival_hour * 100;
  while (arrival_min > 59)
  {
   arrival_min -= 60;
   arrival_hour += 1;
  }
  cout << "Arrives " << destination_city << " ";
  if (arrival_hour < 10)
   cout << "0" << arrival_hour << ":";
  else
   cout << arrival_hour << ":";
  if (arrival_min< 10)
   cout << "0" << arrival_min << " ";
  else
   cout << arrival_min << " ";
  if (days == 1)
   cout << "following day" << endl;
  else if (days == 0)
   cout << "same day" << endl;
  else
   cout << days << " days after" << endl;
 }
 file.close();
}
PROBLEM C
#include <iostream>
#include "Deck.h"
#include "Hand.h"
#include <time.h>
using namespace std;
int main()
{
 srand(time(NULL));
 Deck deck; // creates deck
 deck.shuffle();
 Card card = deck.pop();
 cout << card << endl;
 // start game
 bool playing = true;
 bool playingRound = false;
 int roundType = 0;
 double money = 1000; // initial money
 string playerName; // store player name here
 char input;
 double bet;
 cout << "Enter player name: ";
 getline(cin, playerName);
 while (playing)
 {
  if (roundType == 0)
  {
   // ask if player wants to play demo or game
   cout << "Do you wish to play in (e)-Demo or (g)-Game mode? ";
   cin >> input;
   if (input == 'g' || input == 'G') // game mode
   {
    // display amount
    roundType = 1;
    playingRound = true;
   }
  }
  else if (roundType == 1) // game mode
  {
   // display amount
   cout << playerName << ", you have $" << money << " dollars." << endl;
   cout << "How much you want to bet? ";
   cin >> bet;
   cout << endl;
   if (bet >= 10 && bet <= money && bet <= 1000)
   {
    playingRound = true;
    // create player hand and dealers hand
    Hand dealer;
    // Add one card face down
    Card c = deck.pop();
    dealer.add(c);
    // add one card face up
    c = deck.pop();
    c.showFace();
    dealer.add(c);
    // take 3 cards from deck and add them to players hand
    Hand player;
    for (int i = 0; i < 2; i++)
    {
     c = deck.pop();
     c.showFace();
     player.add(c);
    }
    // Now, start round
    while (playingRound)
    {
     cout << "Dealer's cards: " << dealer << endl << endl;
     cout << "Your cards: " << player << endl;
     // ask for next step
     cout << "(H)-Hit, (S)-Stand (Q)-Quit: ";
     cin >> input;
     dealer.showAll();
     if (input == 'h' || input == 'H') // hit
     {
      // deal a new card to player
      c = deck.pop();
      c.showFace();
      player.add(c);
      if (player.getValue() == 21) // player got 21
      {
       cout << "Your cards: " << player << endl << endl;
       cout << "Dealer's cards: " << dealer << endl << endl;
       while (dealer.getValue() < 17)
       {
        Card c = deck.pop();
        c.showFace();
        dealer.add(c);
        cout << "Dealer drew: [" << dealer.getValue() << "] " << c << endl;
       }
       if (dealer.getValue() == 21) // it's a tie
       {
        cout << "It's a tie!" << endl;
       }
       else if (dealer.getValue() < 21 || dealer.getValue() > 21) // player wins
       {
        cout << "You won!";
        double k = 1.0;
        if (player.getHandCount() == 2) // if player won with a 2-cards hand, it's because the hand is blackjack
         k = 1.5;
        money += bet;
       }
       playingRound = false;
      }
      else if (player.getValue() > 21)
      {
       cout << "Your cards: " << player << endl << endl;
       cout << "Dealer's cards: " << dealer << endl << endl;
       while (dealer.getValue() < 17)
       {
        Card c = deck.pop();
        c.showFace();
        dealer.add(c);
        cout << "Delaer drew: [" << dealer.getValue() << "] " << c << endl;
       }
       if (dealer.getValue() <= 21) // dealer wins
       {
        cout << "Dealer wins" << endl;
        money -= bet;
       }
       else if (dealer.getValue() > player.getValue()) // player wins
       {
        cout << "You won!" << endl;
        money += bet;
       }
       else if (dealer.getValue() == player.getValue()) // tie
       {
        cout << "It's a tie!" << endl;
       }
       playingRound = false;
      }
      // if the dealer's hand is less than 17, then take a new card
      if (dealer.getValue() < 17)
      {
       c = deck.pop();
       dealer.add(c);
      }
     }
     else if (input == 's' || input == 'S') // // stand
     {
      while (dealer.getValue() < 17)
      {
       Card c = deck.pop();
       c.showFace();
       dealer.add(c);
       cout << "Delaer drew: [" << dealer.getValue() << "] " << c << endl;
      }
      if (dealer.getValue() > 21 || dealer.getValue() < player.getValue()) // dealer wins
      {
       cout << "You won!" << endl;
       money += bet;
      }
      else if (dealer.getValue() > player.getValue()) // dealer wins
      {
       cout << "Dealer wins" << endl;
       money -= bet;
      }
      else // dealer's hand is equal to player's hand
      {
       cout << "It's a tie!" << endl;
      }
      playingRound = false;
     }
     else if (input == 'q' || input == 'Q') // quit
     {
      // player automatically loses
      cout << "You lost!" << endl;
      playingRound = false;
     }
    }
   }
   else
    cout << "You must place a bet between $10 and $1000 or less than the available money." << endl;
  }
  // ask if player wants to continue
  if (!playingRound)
  {
   cout << "Do you want to continue? (Y/N): ";
   cin >> input;
   if (input == 'n' || input == 'N' || input == 'y' || input == 'Y')
   {
    if (input == 'n' || input == 'N')
    {
     playing = false;
     cout << "Thanks for playing!" << endl;
    }
   }
  }
 }
}