Valid String Problem Statement
Given a string S
consisting solely of the characters '('
, ')'
, and '*'
, determine if it is a valid string.
Definition of Valid String:
1. Every left parenthesis '(' must have a corresponding right parenthesis ')'.
2. Every right parenthesis ')' must have a corresponding left parenthesis '('.
3. A left parenthesis '(' must occur before the corresponding right parenthesis ')'.
4. The character '*' can represent a single left parenthesis '(', a single right parenthesis ')', or an empty string.
5. An empty string is also considered valid.
Objective:
For each provided test case, ascertain whether the string S
is valid and print 'Yes' or 'No' as the outcome.
Input:
The first line contains an integer 'T', the number of test cases. Each of the following T lines contains one string 'S'.
Output:
For each test case, print 'Yes' if the string 'S' is valid, otherwise print 'No'. Each result is to be printed on a new line.
Example:
Input:
2
()
(*)))
Output:
Yes
No
Constraints:
- 1 <= T <= 100
- 1 <= N <= 5000, where 'N' is the length of string 'S'.
- Time Limit: 1 sec
AnswerBot
28d
Determine if a string consisting of '(' , ')' and '*' characters is valid based on given rules.
Iterate through the string and keep track of the count of left parentheses, right parentheses, and stars....read more
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