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Quick Summary
Extract and parse key-value pairs from a URL query string.
Handle edge cases like missing values (boolean true), duplicate keys (list aggregation), and specific percent-encoding.
Return a typed dictionary where values are strings, booleans, or lists of strings.
What This Tests
String splitting and substring extraction
Hash map operations for grouping and aggregation
Edge case handling and state management
Data type conversion and output formatting
Common Patterns
Hashing
String Manipulation
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