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Decode the Coding Interview in Swift: Real-World Examples

DIY: Design Add and Search Words Data Structure

Explore how to design and implement a WordDictionary data structure that supports adding new words, searching with wildcards, and retrieving all stored words. Learn to develop these core functions in Swift to solve common coding interview problems involving string manipulation and data organization.

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Problem statement

Design a data structure that supports the following functions:

  • Adding new words.
  • Finding if a string matches any previously added string.
  • Returning all the words that are present in the data structure.

Let’s call this data structure the WordDictionary class. Here is how it should be implemented:

  • WordDictionary(): This function will initialize the object.
  • void addWord(word): This
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