InterviewDigestTechnical2026-08-17
Find duplicate parentheses in a string.
AI-Expanded — inferred from the question title, not from the original candidate report
Given a string containing balanced parentheses, determine if it contains any duplicate sets of parentheses that enclose the same sub-expression. A set of parentheses is considered a duplicate if the sub-expression within them is already enclosed by another pair of parentheses, such as in the string "((a+b))".
Context & Summary
Coding round focusing on string manipulation, parentheses balancing, and identifying duplicate parentheses in a string.
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