1 public static void main(String[] args) {
 2         String son1 = "XiaoQiao";
 3         String son2 ="XiaoHuiHui";
 4         Scanner sc = new Scanner(System.in);
 5         while (sc.hasNext()) {
 6             String str = sc.nextLine();
 7             boolean check1 = isSubsequence(son1, str);
 8             boolean check2 = isSubsequence(son2, str);
 9             if(check1&&check2){
10                 System.out.println("Happy");
11             }else {
12                 System.out.println("emm");
13             }
14         }
15     }
16      //indexOf(char c,int m)意思是从第m位置开始寻找该索引，找到则返回该索引，否则返回-1
17     public static boolean isSubsequence(String son, String str) {
18         int index = -1;
19         for (char c : son.toCharArray()) {
20             //返回第一次出现的指定子字符串在此字符串中的索引
21             index = str.indexOf(c, index + 1);
22             if (index == -1)
23                 return false;
24         }
25         return true;
26     }

 1 public static void main01() {
 2         Scanner sc=new Scanner(System.in);
 3         String s=sc.next();
 4         String s1="XiaoQiao";
 5         String s2="XiaoHuiHui";
 6         int a=0,b=0;
 7         for (int i = 0; i <s.length(); i++) {
 8             char c=s.charAt(i);
 9             if(c==s1.charAt(a)) {
10                 a++;
11             }
12             if(c==s2.charAt(b)) {
13                 b++;
14             }
15         }
16         if(a==8&&b==10) {
17             System.out.println("Happy");
18         }else {
19             System.out.println("emm");
20         }
21     }