[每日一题]面试题01.09.字符串轮转
面试题 01.09. 字符串轮转 字符串轮转。给定两个字符串s1和s2，请编写代码检查s2是否为s1旋转而成（比如，waterbottle是erbottlewat旋转后的字符串）。
输入：s1 = “waterbottle”, s2 = “erbottlewat” 输出：True
Solution
class Solution {
public boolean isFlipedString(String s1, String s2) {
if (s1.length()!=s2.length()) return false;
String ss = s2+s2;
return ss.contains(s1);
}
}