Given a string s containing only three types of characters: '(', ')' and '*', return true if s is valid.
The following rules define a valid string:
'(' must have a corresponding right parenthesis ')'.')' must have a corresponding left parenthesis '('.'(' must go before the corresponding right parenthesis ')'.'*' could be treated as a single right parenthesis ')' or a single left parenthesis '(' or an empty string "".
Example 1:
Input: s = "()" Output: true
Example 2:
Input: s = "(*)" Output: true
Example 3:
Input: s = "(*))" Output: true
Constraints:
1 <= s.length <= 100s[i] is '(', ')' or '*'.