poker.cpp

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
 
int getRank(int n,char *rank,char card[][3]);
int getSuit(int n,char *suit,char card[][3]);
 
int isAKind(int n,char *rank,char card[][3],int *checked);
int isFull(char *rank,char card[][3],int *checked);
int isFlush(char *suit,char card[][3]);
int isStraight(char *rank,char card[][3]);
int isFlush(char *suit,char card[][3]);
int isPair(char *rank,char card[][3],int *checked);
 
int main(){
    char rank[]={"23456789tjqka"},suit[]={"cdhs"},card[5][3]={0};
    int checked[5]={0};
 
    while(~scanf("%s%s%s%s%s",card[0],card[1],card[2],card[3],card[4])){
        int ic=0,dc=0;
         
        for(int i=0;i<5;i++)
            for(int j=0;j<2;j++)
                card[i][j]=tolower(card[i][j]);
 
        for(int i=0;i<5;i++){
            char *f1=strchr(rank,card[i][0]),*f2=strchr(suit,card[i][1]);
            if(!f1||!f2)ic=1;
            for(int j=i+1;j<5;j++)
                if(!strcmp(card[i],card[j]))dc=1;
        }
         
        if(ic && !dc) {printf("Illegal card\n");continue;}
        if(!ic && dc) {printf("Duplicate card\n");continue;}
        if(ic && dc) {printf("Illegal and Duplicate cards\n");continue;}
 
        for(int i=0;i<5;i++){
            for(int j=1;j<5-i;j++){
                int tmp1=getRank(j,rank,card)*10+getSuit(j,suit,card);
                int tmp2=getRank(j-1,rank,card)*10+getSuit(j-1,suit,card);
                if(tmp1 < tmp2){
                    char t[3];
                    strcpy(t,card[j]);
                    strcpy(card[j],card[j-1]);
                    strcpy(card[j-1],t);
                }
            }
        }
        memset(checked,0,sizeof(checked));
        if(isStraight(rank,card)&&isFlush(suit,card))printf("Straight Flush");
        else if(memset(checked,0,sizeof(checked))&&isAKind(4,rank,card,checked))printf("Four-Of-A-Kind");
        else if(isAKind(3,rank,card,checked)&&isPair(rank,card,checked)) printf("Full House");
 
        else if(isFlush(suit,card))printf("Flush");
        else if(isStraight(rank,card))printf("Straight");
        else if(memset(checked,0,sizeof(checked))&&isAKind(3,rank,card,checked))printf("Three-Of-A-Kind");
        else if(memset(checked,0,sizeof(checked))&&isPair(rank,card,checked)==2)printf("Two Pairs");
        else if(memset(checked,0,sizeof(checked))&&isPair(rank,card,checked)==1)printf("Pair");
        else printf("High Card");
         
        for(int i=0;i<5;i++)printf(" %s",card[i]);
             
        printf("\n");
    }
 
    return 0;
}
 
int getRank(int n,char *rank,char card[][3]){
    return strchr(rank,card[n][0])-rank+1;
}
int getSuit(int n,char *suit,char card[][3]){
    return strchr(suit,card[n][1])-suit+1;
}
int isStraight(char *rank,char card[][3]){
    int lastRank;
    lastRank=getRank(0,rank,card);
    for(int i=1;i<5;i++){
        if(getRank(i,rank,card)-lastRank==1){
            if(i==4)return 1;
            lastRank=getRank(i,rank,card);
             
        }
        else return 0;
    }
}
int isAKind(int n,char *rank,char card[][3],int *checked){
    int lastRank;
    for(int i=0;i<=5-n;i++){
        lastRank=getRank(i,rank,card);
        for(int j=i+1;j<i+n;j++){
            if(getRank(j,rank,card)==lastRank){
                checked[j]=checked[j-1]=1;
                lastRank=getRank(j,rank,card);
                if(j==i+n-1)return 1;
            }
            else if(i==5-n&&j==i+n-1)return 0;
        }
        for(int i=0;i<5;i++)checked[i]=0;
    }
    return 0;
}
int isFlush(char *suit,char card[][3]){
    int lastSuit;
    lastSuit=getSuit(0,suit,card);
 
    for(int i=1;i<5;i++){
        if(getSuit(i,suit,card)==lastSuit){
            if(i==4)return 1;
            lastSuit=getSuit(i,suit,card);
        }
        else return 0;
    }   
    return 0;
}
int isPair(char *rank,char card[][3],int *checked){
    int lastRank,n=0;
    for(int i=0;i<5;i++){
        if(checked[i]==0){
            lastRank=getRank(i,rank,card);
            n=i;
            break;
        }
    }
    for(int i=n+1;i<5;i++){
        if(checked[i]==0){
            if(getRank(i,rank,card)==lastRank){
                checked[i]=checked[i-1]=1;
                return 1+isPair(rank,card,checked);
            }
            lastRank=getRank(i,rank,card);
        }
        else if(i==4)return 0;
    }
    return 0;
}