Postfix Expression Calculator

Asked at Aurora · Coding Questions · Difficulty: Medium · Last asked Jul 15, 2026

A calculator receives arithmetic expressions in postfix form: every operator is written after its two operands, so no parentheses are needed. For example, `3 4 + 2 *` means `(3 + 4) * 2`. Write the function that computes the integer value of such an expression.

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