119. Valid Parentheses

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Example 1:

Input: s = "()"

Output: true

Explanation: The parentheses are balanced and correctly closed.

Example 2:

Input: s = "([)]"

Output: false

Explanation: The parentheses are not closed in the correct order.

Example 3:

Input: s = "{[]}"

Output: true

Explanation: The parentheses are balanced and correctly nested.

Example 4:

Input: s = ""

Output: true

Explanation: An empty string is considered valid as there are no unclosed brackets.

Example 5:

Input: s = "(]"

Output: false

Explanation: The parentheses are not closed by the same type of bracket.

Constraints:

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Time Complexity

O(n)

Space Complexity

O(n)

119. Valid Parentheses

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