String 다루기

 *String sort in Arrays with comparator

Arrays.sort(res, 0, pLet, (str1, str2) -> {
    int index1 = str1.indexOf(" ");
    int index2 = str2.indexOf(" ");
    return str1.substring(index1).compareTo(str2.substring(index2));
});

*String split, indexOf

String str = "cat banana dog";
String[] splitted = str.split(" ", 2);
int idx = str.indexOf(" ");
String substr = str.substring(idx);

System.out.println(splitted[0]);    //cat
System.out.println(splitted[1]);    //banana dog
System.out.println(idx);            //3
System.out.println(substr);         // banana dog