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warmup12 min

Valid Parentheses

Valid Parentheses

Given a string s of just ()[]{}, return true if every bracket is closed by the same type in the correct order. The textbook use of a stack: push openers, and on a closer, the top of the stack must be its matching opener.

isValidParens("()[]{}"); // true
isValidParens("(]");     // false
isValidParens("([)]");   // false  (wrong order)
isValidParens("{[]}");   // true

Run your code to see results.

Stuck? This challenge exercises:

javascript.data-structures