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Title Difficulty Average time to complete Status
Maps Easy 26 minutes
HashSets Easy 13 minutes
Date and Time Easy 31 minutes
Pattern Syntax Checker Easy 12 minutes
Currency Formatter Easy 14 minutes
Generics Easy 18 minutes
Bitset Easy 16 minutes
Random Numbers Easy 3 minutes
Class with Comparators Easy 50 minutes
Lambda Expressions Easy 29 minutes