题解 | #扑克牌大小#

扑克牌大小

https://www.nowcoder.com/practice/d290db02bacc4c40965ac31d16b1c3eb

import java.util.Scanner;
import java.util.*;
// 繁杂的业务处理题,伤神又伤身,t_t
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        while (in.hasNextLine()) { 
            String poker = in.nextLine();
            System.out.println(compare(poker));
        }
    }
    public static String compare(String poker) {
        String[] s = poker.split("-");
        String poker1 = s[0], poker2 = s[1];
        int[] p1 = change(poker1), p2 = change(poker2);
        if (p1[0] == p2[0]) {
            return p1[1] > p2[1] ? poker1 : poker2;
        }  else if (p1[0] == 6 || p1[0] == 4 && p2[0] != 4 && p2[0] != 6) {
            return poker1;
        } else if (p2[0] == 6 || p2[0] == 4 && p1[0] != 4 && p1[0] != 6) {
            return poker2;
        } else {
            return "ERROR";
        }
    }

    public static int[] change(String poker_) {
        //type: 1 一个或多个单个, 2 对子, 3 三个, 4 炸弹, 5 顺子, 6 王炸
        String[] poker = poker_.split(" ");
        int type[] = new int[2];
        int n = poker.length;
        if (n == 1) {
            type[0] = 1;
            type[1] = map.get(poker[0]);
        } else if (n == 2) {
            if (poker[0].equals(poker[1])) {
                type[0] = 2;
                type[1] = map.get(poker[1]);
            } else if (poker[0].equals("JOKER") && poker[1].equals("joker")
                       || poker[1].equals("JOKER") && poker[0].equals("joker")) {
                type[0] = 6;
                type[1] = 16;
            } else {
                int max = map.get(poker[0]) > map.get(poker[1]) ? map.get(poker[0])
                          : map.get(poker[1]);
                type[0] = 1;
                type[1] = max;
            }
        } else if (n == 3) {
            if (poker[0].equals(poker[1])
                    && poker[2].equals(poker[1])) {
                type[0] = 3;
                type[1] = map.get(poker[0]);
            } else {
                int pre = move(poker, 0, 3);
                type[0] = 1;
                type[1] = pre;
            }
        } else if (n == 4) {
            if (poker[0].equals(poker[1])
                    && poker[1].equals(poker[2])
                    && poker[2].equals(poker[3])) {
                type[0] = 4;
                type[1] = map.get(poker[0]);
            } else {
                int pre = move(poker, 0, 4);
                type[0] = 1;
                type[1] = pre;
            }
        } else if (n >= 5) {
            int pre = map.get(poker[0]);
            int off = 1;
            while (off < n) {
                if (map.get(poker[off]) == pre + 1) {
                    pre = map.get(poker[off]);
                    off++;
                } else {
                    break;
                }
            }
            if (off == n) {
                type[0] = 5;
                type[1] = map.get(poker[0]);
            } else {
                int pre2 = move(poker, 0, n);
                type[0] = 1;
                type[1] = pre2;
            }
        }
        return type;
    }
  
    public static move(String[] poker, int l, int r) {
        int pre = map.get(poker[l]);
            for (int i = 1; i < r; i++) {
               if (pre < map.get(poker[i])) {
                   pre = map.get(poker[i]);
               }
           }
	  return pre;
	} 
  
    static HashMap<String, Integer> map;
    static {
        map = new HashMap<String, Integer>();
        map.put("3", 1);
        map.put("4", 2);
        map.put("5", 3);
        map.put("6", 4);
        map.put("7", 5);
        map.put("8", 6);
        map.put("9", 7);
        map.put("10", 8);
        map.put("J", 9);
        map.put("Q", 10);
        map.put("K", 11);
        map.put("A", 12);
        map.put("2", 13);
        map.put("joker", 14);
        map.put("JOKER", 15);
    }
}

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