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Decode the Coding Interview in Elixir: Real-World Examples

DIY: Basic Calculator II

Explore how to evaluate string expressions containing integers and operators by building a function to calculate results without using built-in evaluation. Understand rounding integer division and expression parsing to solve Amazon-style coding challenges effectively.

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Problem statement

In this challenge, you are given a string, st, which contains an expression. You’ll evaluate this expression and return its value. Keep the following statements in mind while solving the problem:

  • The integer division should be rounded off to the nearest smallest integer.
  • The given expression is always valid, giving the intermediate result in the range of [[-2312^{31}
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