TripleA-Coding-Interview-Questions
Question 1
- Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.
- An input string is valid if:
- Open brackets must be closed by the same type of brackets.
- Open brackets must be closed in the correct order.
Example 1:
Input: s = "()"
Output: true
Example 2:
Input: s = "()[]{}"
Output: true
Example 3:
Input: s = "(]"
Output: false
Example 4:
Input: s = "([)]"
Output: false
Example 5:
Input: s = "{[]}"
Output: true
Example 6
Input: s = "((()))"
Output: True
Example 7
Input: s = "[()]{}"
Output: True
Example 8
Input: s = "({[)]"
Output: False
Constraints:
- 1 <= s.length <= 10^4
- s consists of parentheses only '()[]{}'.
References