/**
	 * @param str 解码前字符串
	 * @return 解码后字符串
	 * @author mnmlist
	 */
	public static String decode(String str)
	{
		if(str==null||str.length()==0)
			return str;
		StringBuilder sBuilder=new StringBuilder();
		int strLen=str.length();
		int i=0;
		int start=0,end=0;
		char ch;
		String tempSubString=null,tempNumString=null;
		while(i<strLen)
		{
			//找出子串
			start=i;
			ch=str.charAt(i);
			while(i<strLen&&(ch>'9'||ch<'0'))
			{
				i++;
				if(i<strLen)
					ch=str.charAt(i);
			}
			end=i;
			tempSubString=str.substring(start,end);
			//找出每个子串出现的次数
			start=end;
			ch=str.charAt(i);
			while(i<strLen&&(ch<='9'&&ch>='0'))
			{
				i++;
				if(i<strLen)
					ch=str.charAt(i);
			}
			end=i;
			tempNumString=str.substring(start,end);
			int count=Integer.valueOf(tempNumString);
			//将子串重复解码
			for(int j=0;j<count;j++)
				sBuilder.append(tempSubString);
		}
		return sBuilder.toString();
	}