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其实反解析更有意思,就是第二种化成第一种

Posted by tzkq at 2009-02-19 21:22:27 on Problem 1068 and last updated at 2009-02-19 21:23:17 
static String p(String s){
	if(s.length()==0)return "";
	int t=s.charAt(s.length()-1)-48;
	if(t==s.length())
          return '('+p(s.substring(0,s.length()-1))+')';
	else return p(s.substring(0,s.length()-t))+p(s.substring(s.length()-t));
}

java代码 递归思想 仅是把第二种化成括号形式
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