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Valid Parentheses

Name: PrepSync
Rating: 4.9 (120 reviews)

Problem

Given a string 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. Line 1 = a string of parentheses. Expected output format: 'true' if valid, 'false' otherwise. Worked example: Input: '()' Output: 'true'

Sample input

Output

(run your code to see output)