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Solution: Word Pattern

Explore how to verify if a string follows a specified pattern by creating a one-to-one mapping between pattern characters and words using hash maps. This lesson guides you through implementing an efficient algorithm with linear time complexity, ensuring you grasp bijection concepts critical for solving coding interview challenges.

Statement

You are given a pattern and a string, s. You need to determine whether the string s follows the same pattern.

A string s is said to follow a pattern if a bijection exists between a character in the pattern and a non-empty word in s.

  • Each character in the pattern must map to exactly one unique word in s.

  • Each word in s must map to exactly one unique character in pattern.

  • No ...