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Solution: Letter Case Permutation

Explore how to generate all possible letter case permutations of a given string using the subsets pattern in C#. This lesson shows you how to systematically build combinations by modifying letters independently while preserving digits, helping you understand the approach to solve permutation problems effectively.

Statement

Given a string, s, consisting of letters and digits, generate all possible variations by modifying each letter independently to be either lowercase or uppercase while keeping the digits unchanged. Each letter in the ...