题解 | #扑克牌大小#

#include <stdio.h>
#include <string.h>

/* 牌型 */
enum {
    sing = 1, 
    doub,
    trip,
    bomb,
    conti,
    cp_king
};

/* 判斷牌型 */
int typecheck (char str[5][5], int len) {
    if (len==1)  return sing;
    else if (len==2) {
        if (str[0][1]=='o' || str[0][1]=='O')  return cp_king;
        else  return doub;
    }
    else if (len==3)  return trip;
    else if (len==4)  return bomb;
    else  return conti;
}

/* 轉換為數字，方便比較大小 */
int switch2num(char ch, char ch_next) {
    if (ch>='3' && ch<='9')  return ch-'3';
    else if (ch=='1')  return 7;
    else if (ch=='J') {
        if (ch_next!=0)  return 14;
        else  return 8;
    }
    else if (ch>='Q' && ch<='K')  return 9+(ch-'Q');
    else if (ch=='A')  return 11;
    else if (ch=='2')  return 12;
    else if (ch=='j') return 13;  //小王
    else  return 14;  //大王
}

/* 牌型大小比較 */
int comp(char (*a)[5], char(*b)[5]) {
    if (switch2num(a[0][0], a[0][1])>switch2num(b[0][0], b[0][1]))  return 1;
    else  return -1;
}

/* 牌型打印 */
void Print(char (*str)[5], int column) {
    for (int i=0; i<column; i++) {
        if (i==column-1) {
            if (str[i][0]=='1')  printf("%c%c\n",str[i][0],str[i][1]); //10特殊對待
            else if (str[i][0]=='j' || (str[i][0]=='J'&&str[i][1]=='O'))  printf("%c%c%c%c%c\n", str[i][0],str[i][1],str[i][2],str[i][3],str[i][4]);  //大小王同理
            else  printf("%c\n",str[i][0]);
        } else {
            if (str[i][0]=='1')  printf("%c%c ",str[i][0],str[i][1]);
            else if (str[i][0]=='j' || (str[i][0]=='J'&&str[i][1]=='O'))  printf("%c%c%c%c%c ", str[i][0],str[i][1],str[i][2],str[i][3],str[i][4]);
            else  printf("%c ",str[i][0]);
        }
    }
}

/* 入口函數 */
int main() {
    char input[50];
    while (scanf("%[^\n]",input)!=EOF) {
        getchar();  //讀取掉\n字符
        int length=strlen(input), i, abflag=0, iax=0, iay=0, ibx=0, iby=0;
        char a[5][5], b[5][5];
        memset(a, 0, sizeof(a));
        memset(b, 0, sizeof(b));
        for (i=0; i<=length; i++) {
            if (input[i]=='-') {
                iax++; 
                iay=0;
                abflag=1; 
                continue;
            }
            else if (input[i]==' ') {
                if (abflag==0) {
                    iax++;
                    iay=0;
                } else {
                    ibx++;
                    iby=0;
                }
            }
            else if (input[i]=='\0') {
                ibx++;
                iby=0;
            }
            else {
                if (abflag==0)  a[iax][iay++]=input[i];
                else  b[ibx][iby++]=input[i];
            }
        }
        int typeA, typeB;
        // printf("iax=%d,ibx=%d\n",iax,ibx);
        typeA = typecheck(a, iax);
        typeB = typecheck(b, ibx);
        // printf("typeA=%d,typeB=%d\n", typeA,typeB);
        if (typeA==cp_king || typeB==cp_king) {
            printf("joker JOKER\n");
        }
        else if (typeA==bomb || typeB==bomb) {
            if (typeA==bomb && typeB!=bomb) {
                Print(a, iax);
            }
            else if (typeA!=bomb && typeB==bomb) {
                Print(b, ibx);
            }
            else {
                if (comp(a, b)>0)  Print(a, iax);
                else  Print(b, ibx);
            }
        }
        else {
            if (typeA!=typeB)  printf("ERROR\n");
            else {
                if (comp(a, b)>0)  Print(a, iax);
                else  Print(b, ibx);
            }
        }
    }
    return 0;
}