/*
  *@author 詩語江南
  *@function 將字符串反序輸出(測試形如"My name is 天才"的字符串，反序后為"才天 is name My")
  *@parameter 要反序的字符串
  *@return  反序后的字符串
  */
 public static String rev(String num){
  String[] nums = num.split(" ");
  StringBuffer sb = new StringBuffer();
  for(int i = nums.length-1; i>=0; i--){
   StringBuffer sb2 = null;
   if(nums[i].length() > 1){
    if(isContainZh(nums[i])){
     sb2 = new StringBuffer(nums[i]);
     sb2.reverse();
    }
   }
   if(sb2 != null)
    nums[i] = sb2.toString();
   sb.append(nums[i] + " ");
  }
  return sb.toString();
 }
 
 //判斷一個字符串是否有漢字
 public static boolean isContainZh(String str){
  boolean b = false;
  if(str.length() > 1){
   byte[] bs = str.getBytes();
   if(bs.length != str.length()){
    b = true;
   }
  }
  return b;
 }