Wrote assert part of test 'K: monomorphic function to find a string in an array p23'.
Fixed Error: Created method findFirst().
Fixed Error: Implemented method findFirst().
Wrote assert part of test 'K: polymorphic function to find an element in an array p23'.
Fixed Error: Created method findFirst[T]().
Fixed Error: Implemented method findFirst[T]().
Fixed Error: Implemented method findFirst[T]().
Refactored: Moved test classes to packages of books.
Wrote the assert part of test 'Exercise 2.2: Implement isSorted which checks whether an Array[A] is sorted according to a given comparison function p24'.
Fixed Error: Created method isSorted[T]().
Fixed Error: Created method isSorted[T]().
Fixed Error: Implemented method isSorted[T]().