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Topic
String normalization, parsing, tokenization, validation, and comparison problems.
Practice items tagged with Strings and Parsing.
Implements comparison for simple semantic version strings with missing patch parts treated as zero.
Implements a word-frequency counter with normalization, punctuation handling, and stable ordering.
Implements a stable first-unique-character search using counts and original order.
Parses a simple filter expression into a validated dictionary without accepting arbitrary keys.