Given a string consisting solely of the characters '(', ')', '{', '}', '[', and ']', determine whether the string is valid. A string is considered valid if every opening bracket has a corresponding closing bracket and the brackets are closed in the correct order.

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Accepted Answer

Check if a string of brackets is valid by ensuring every opening bracket has a corresponding closing bracket.

Use a stack data structure to keep track of opening brackets
Iterate through the string and push opening brackets onto the stack
When a closing bracket is encountered, pop the top element from the stack and check if it matches the closing bracket
If the stack is empty at the end of the iteration, the string is valid

Given a string consisting solely of the characters '(', ')', '{', '}', '[', and ']', determine whether the string is valid. A string is considered valid if every opening bracket has a corresponding closing bracket and the brackets are closed in the correct order.

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