题解 | #查找兄弟单词#

class HelloWorld {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        String s = in.nextLine();
        String[] sp = s.split(" ");
        String[] src = new String[Integer.parseInt(sp[0])];
        for (int i = 0; i < src.length; i++) {
            src[i] = sp[i + 1];
        }
        String fstr = sp[sp.length - 2];
        int out = Integer.parseInt(sp[sp.length - 1]);
        int[] aa = new int[26];
      //  数组对目标串字符统计
        for (int i = 0; i < fstr.length(); i++) {
            aa[fstr.charAt(i)-'a']++;
        }

        List<String> list = new ArrayList<>();
        for (int i = 0; i < src.length; i++) {

            if (src[i].equals(fstr) || (src[i].length() != fstr.length())) {
                continue;
            } else {
              //数组对查询串字符统计
                int []tp = new int[26];
                for (int j = 0; j < fstr.length(); j++) {                  
                    tp[src[i].charAt(j)-'a']++;
                }
                boolean f = true;
              //二者进行对比 符合加入到集合中
                for (int j = 0; j < tp.length; j++) {                  
                    if (tp[j]!=aa[j]) {
                        f = false;
                        break;
                    }
                }
                if (f) {
                    list.add(src[i]);
                }
            }
        }


        String[] arrs = list.toArray(new String[0]);
      // 对集合排序
        Arrays.sort(arrs);
        System.out.println(Arrays.toString(arrs));

        System.out.println(arrs.length);
        if ((out - 1) < arrs.length) {
            System.out.println(arrs[out - 1]);
        } 
    }
}