Vibe Coding Arena

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Valid Parentheses

medium

Given a string `s` containing just the characters `(`, `)`, `{`, `}`, `[` and `]`, determine if the input string is valid.

An input string is valid if:

1. Open brackets must be closed by the same type of brackets.

2. Open brackets must be closed in the correct order.

3. Every close bracket has a corresponding open bracket of the same type.

Function Signature

def is_valid(s: str) -> bool:

Examples

Input: s = "()"

Output: True

Input: s = "()[]{}"

Output: True

Input: s = "(]"

Output: False

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Generated code may need editing — that's the challenge! Your vibe coding skill is tested by how well you prompt the AI and how well you fix the code it generates.

Test Results

Test 1

is_valid("()")

Expected: True

Test 2

is_valid("()[]{}")

Expected: True

Test 3

is_valid("(]")

Expected: False

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Score

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Valid Parentheses

medium

Given a string `s` containing just the characters `(`, `)`, `{`, `}`, `[` and `]`, determine if the input string is valid.

An input string is valid if:

1. Open brackets must be closed by the same type of brackets.

2. Open brackets must be closed in the correct order.

3. Every close bracket has a corresponding open bracket of the same type.

Function Signature

def is_valid(s: str) -> bool:

Examples

Input: s = "()"

Output: True

Input: s = "()[]{}"

Output: True

Input: s = "(]"

Output: False