To evaluate an expression in postfix notation, you would use a stack. The Last-In, First-Out (LIFO) behavior of a stack is perfect for this task because the most recently encountered operands are the ones an operator needs to work on.
Which data structure would you use to evaluate an expression given in postfix notation?
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This question is part of 💻 Computing within the broader 💾 Computer Science subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.