671

2017.9.28

首先判断两个字符串的长度是不是相同。然后判断，字符串A两个进行拼接后，是不是包含着字符串B，就表示是不是循环单词了

public class Solution {    /*     * @param words: A list of words     * @return: Return how many different rotate words     */public int countRotateWords(List<String> words){int size = words.size();if(size <= 1){return size;}String []tmp = new String[size];int count = 0;for(String s : words){boolean flag = false;for(int i = 0; i <= count; i++){if(tmp[i] != null && tmp[i].length() == s.length()*2 && tmp[i].contains(s)){flag = true;break;}}if(flag == false){String add = s+s;tmp[count] = add;count++;}}return count;}}