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All topics›JavaScript›Stacks & queues

Basic Calculator

advancedlayer B8 · Stacks & queues5 tests

Evaluate a string expression built from non-negative integers, +, -, matched parentheses and spaces. Return the integer result.

  • There is no * or /, so the only precedence is parentheses
  • A leading -, including right after (, is a unary minus: -(3+4) is -7
  • Spaces may appear anywhere and mean nothing
  • Do not use eval or Function

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