要查找天气,一个字符串是另一个字符串的旋转,将第一个字符串与自身连接两次,然后查找天气
public class Sample { public static void main(String args[]){ String str1 = "gala"; String str2 = "alag"; String s3 = str1+str1; if(s3.contains(str2)) { System.out.println("str1 is rotation of str2"); } else { System.out.println("str1 is not rotation of str2"); } } }