PYTHON PROBLEM 158 · Intermediate

Generate balanced parentheses: One pair

Generate the single valid expression for one pair.

Base case → make a smaller choice → recurse → undo if neededbacktrackingconstraints

PROBLEM OVERVIEW

What this Python exercise asks you to practise

This scenario tests generate balanced parentheses. It belongs to the Recursion and Backtracking roadmap and uses the base case → make a smaller choice → recurse → undo if needed pattern.

Understand base cases, shrinking subproblems, recursive search, and choice-and-undo backtracking.

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