认真生活、快乐工作 - 马云

摘要： 1.String/ArraytoCharArray() //get char array of a StringArrays.sort() //sort an arrayArrays.toString(char[] a) //convert to stringcharAt(int x) //get a char at the specific indexlength() //string lengthlength //array size substring(int beginIndex) substring(int beginIndex, int endIndex)Integer.valu. 阅读全文