*/
public class 字符串练习1
{
public static void sop(String str)
{
System.out.println(str);
}
public static void main(String[] args)
{
String s=" ab cd ";
sop("("+s+")");
s=myTrim(s);
sop("("+s+")");
}
public static String myTrim(String str)
{
int start=0,end=str.length()-1;