Altassian,Nvdia,Google,Amazon,Apple|Python Data Engineer Interview preparation|Validate Parentheses
This video dives into a stack-based approach to check if an input string of brackets is valid. We map closing to opening brackets, then use a stack to keep track of unmatched opening brackets as we iterate through the string. If we encounter a closing bracket, we check the top of the stack for a match. This method ensures that each bracket is properly closed in the correct order.