Decode the Coding Interview in Python: Real-World Examples/

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DIY: Valid Number

DIY: Valid Number

Solve the interview question "Valid Number" in this lesson.

We'll cover the following...

Problem statement

Validate if a given string can be interpreted as a decimal number or not. Here is a list of characters that can appear in a valid decimal number:

  • Numbers - 0-9

  • Exponent - "e"

  • Positive/negative sign - "+"/"-" ...