5-血型遗传检测（牛客网）_请实现一个程序,输入父母血型,判断孩子可能的血型

题目描述

血型遗传对照表如下：

请实现一个程序，输入父母血型，判断孩子可能的血型。

给定两个字符串father和mother，代表父母的血型,请返回一个字符串数组，代表孩子的可能血型(按照字典序排列)。

测试样例：

”A”,”A”

返回：[”A”,“O”]

import java.util.*;
 
public class ChkBloodType {
    public String[] chkBlood(String father, String mother) {
        HashMap<String, String[]> strMap = new HashMap<>();
 
		strMap.put("OO", new String[] { "O" });
		strMap.put("AO", new String[] { "A", "O" });
		strMap.put("AA", new String[] { "A", "O" });
		strMap.put("AB", new String[] { "A", "AB", "B", "O" });
		strMap.put("AAB", new String[] { "A", "AB", "B" });
		strMap.put("BO", new String[] { "B", "O" });
		strMap.put("BB", new String[] { "B", "O" });
		strMap.put("BAB", new String[] { "A", "AB", "B" });
		strMap.put("ABO", new String[] { "A", "B" });
		strMap.put("ABAB", new String[] { "A", "AB", "B" });
		
        String[] res = null;
        
		if (strMap.get(father + mother) == null) {
			res = strMap.get(mother + father);
		} else {
            res = strMap.get(father + mother);
        }
		
		return res;
    }
}