PokerGame.cpp

#include <bits/stdc++.h>

using namespace std;

map<string, int> CharToNumber;
vector<string> Map {"Bich", "Chuon", "Ro", "Co"};

vector<string> Poker {"High Card", "One Pair", "Two Pair", "Three of a kind", "Straight", "Flush", "Full House", "Four of a kind", "Straight Flush", "Royal Flush"};

void CharMap() {
    for(int i = 0; i < Map.size(); i++) {
        CharToNumber[Map[i]] = i + 1;
    }
    // for(int i = 0; i < Map.size(); i++) {
    //     cout << Map[i];
    //     cout << CharToNumber[Map[i]]; 
    //     cout << "\n ================ \n";
    // }
}

class Card {
    private: 
        string ch;
        int number;
    public: 

        Card(string cha, int num) {
            ch = cha;
            number = num;
        }
        Card() {
            ch = "Bich";
            number = 3;
        }


        void Input() {
            while(1) {
                string tmp;
                cout << "Enter the value from ( Bich, Chuon, Ro, Co ) \n";
                cin >> tmp;
                if(tmp == "Bich" || tmp == "Chuon" || tmp == "Ro" || tmp == "Co") {
                    ch = tmp;
                    break;
                }
                else {
                    cout << "Wrong value. Please try again";
                }
            }
            while(1) {
                int x;
                cout << "Enter the value from 1 to 13 ( 1: A, 11: J, 12: Q, 13: K ) \n";
                cin >> x;
                if(x >= 1 && x <= 13) {
                    number = x;
                    return;
                }
                else {
                    cout << "Wrong value. Please try again";
                }
            }
        }

        void Output() {
            string cha = "";
            if(number == 11) cha = "J";
            else if(number == 12) cha = "Q";
            else if(number == 13) cha = "K";
            cout << ((number <= 10) ? to_string(number) : cha) << " " << ch << "  ";
        }

        int TrongSo() const {
            return number == 1 ? 14 : (number == 2 ? 15 : number);
        }

        bool SmallerCard(Card &a) {
            if(number != a.number) 
                return number < a.number;
            return CharToNumber[ch] < CharToNumber[a.ch];
        }

        static bool SortSmaller(Card &a, Card &b) {
            return a.TrongSo() < b.TrongSo();
        }

        int getNumber() {
            return number;
        }

        string getChar() {
            return ch;
        }

};


class Hand {
    private: 
        Card cards[5];
    public:
        int Pair() {
            int result = 1;
            map<int, int> Map;
            for(int i = 0; i < 5; i++) {
                Map[cards[i].getNumber()]++;
            }
            for(int i = 0; i < 5; i++) {
                if(Map[cards[i].getNumber()] == 2) {
                    result++;
                    Map[cards[i].getNumber()] = 0;
                } else if(Map[cards[i].getNumber()] == 3) {
                    result = 4;
                    Map[cards[i].getNumber()] = 0;
                } else if(Map[cards[i].getNumber()] == 4) {
                    result = 8;
                    Map[cards[i].getNumber()] = 0;
                } else if((Map[cards[i].getNumber()] == 3 && result == 2) || 
                        (Map[cards[i].getNumber()] == 2 && result == 4)) {
                    result = 7;
                    Map[cards[i].getNumber()] = 0;
                }
            }
            return result;
        }

        bool Respectively() {
           for(int i = 0; i < 4; i++) {
                if(cards[i].getNumber() + 1 != cards[i+1].getNumber()) return 0;   
            } 
            return 1;
        }

        bool DiffChar() {
            int count = 0;
            for(int i = 0; i < 5; i++) {
                for(int j = 0; j < 5; j++) {
                    if(cards[i].getChar() == cards[j].getChar()) count++;
                }
                if(count < 5) count = 0;
                else return 0;
            } 
            return count < 5;
        }

        int Straight() {
            if(Respectively() && DiffChar()) return 5;
            return 0;
        }

        int Flush() {
            if(!Respectively() && !DiffChar()) return 6;
            return 0;
        }

        int StraightFlush() {
            if(Respectively() && !DiffChar()) return 9;
            return 0;
        }

        void setCard() {
            for(int i = 0; i < 5; i++) {
                cards[i].Input();
            }
        }

        void SortCardFromHand() {
            for(int i = 0; i < 5; i++) {
                for(int j = 0; j < 5 - i - 1; j++) {
                    if(!cards[j].SmallerCard(cards[j+1])) {
                        swap(cards[j], cards[j+1]);
                    }
                }
            }
            // cout << "After sort:\n";
            // for(int i = 0; i < 5; i++) {
            //     cout << cards[i].getChar() << " " << cards[i].getNumber() 
            //         << " (strength: " << cards[i].TrongSo() << ")\n";
            // }
        }

        void OutPutFromHand() {
            for(int i = 0; i < 5; i++) {
                cards[i].Output();
            }
        }

        int DetectHand() {
            int pair = Pair();          
            if(pair > 1) return pair;    
            
            int straight = Straight();    
            if(straight) return straight;
            
            int flush = Flush();          
            if(flush) return flush;
            
            int straightFlush = StraightFlush(); 
            if(straightFlush) return straightFlush;
            
            return 1;  // High card
        }

};





void ThucHanhB() {
    CharMap();
    int n; 
    cout << "Enter the number of card: "; cin >> n;
    Card *c = new Card[n];
    for(int i = 0; i < n; i++) {
        cout << "Enter the " << i + 1 << " card \n";
        c[i].Input();
    }
    Card BiggestCard;
    for(int i  = 0; i < n - 1; i++) {
        cout << "Loop " << i << endl;
        c[i].Output();
        c[i + 1].Output();
        if(c[i].SmallerCard(c[i+1])) {
            BiggestCard = c[i+1];
        }
        cout << "Biggest card is: ";
        BiggestCard.Output();
        cout << "========= \n";
    }
    cout << "The card having biggest value is: ";
    BiggestCard.Output();
}

/*

Bich 3
Chuon 10
Co 2

*/


void ThucHanhC() {
    int n = 5;
    Hand player1;
    Hand player2;
    cout << "Input for " << 1 << " player \n";
        player1.setCard();
    cout << "Input for " << 2 << " player \n";
        player2.setCard();
    cout << "\n====================================\n\n";
    
    player1.SortCardFromHand();
    cout << "Player 1 after sort: \n";
    player1.OutPutFromHand(); cout << endl;
    
    player2.SortCardFromHand();
    cout << "Player 2 after sort: \n";
    player2.OutPutFromHand();
    
    cout << "\n\n============== RESULT ==============\n\n";
    
    if(player1.DetectHand() > player2.DetectHand()) {
        cout << "Player 1 Won - " << Poker[player1.DetectHand() - 1] << endl;
        cout << "Player 2 Lost - " << Poker[player2.DetectHand() - 1] << endl;
    } else {
        cout << "Player 1 Lost - " << Poker[player1.DetectHand() - 1] << endl;
        cout << "Player 2 Won - " << Poker[player2.DetectHand() - 1] << endl;
    }
}

/*

    High card
Bich 1
Chuon 3
Co 2
Ro 6
Ro 9

    One pair
Bich 1
Co 1
Chuon 5
Ro 9
Bich 10

    Two pair
Bich 6
Co 6
Ro 7
Bich 7
Co 10

    Three of a kind
Bich 7
Co 2
Chuon 2
Bich 2
Chuon 9

    Straight
Bich 13
Chuon 12
Co 11
Chuon 10
Co 9

    Flush
Bich 6
Bich 1
Bich 9
Bich 7
Bich 10

    Full House
Ro 3
Co 3
Chuon 3
Bich 7
Ro 7

    Four of a kind
Bich 8 
Co 8
Ro 8
Chuon 8
Co 5

    Straight Flush
Co 5
Co 6
Co 7
Co 8
Co 9

*/

int main() {
    // ThucHanhB();
    ThucHanhC();
}