![]() ![]() Compute a Roman numeral for an Integer, and vice-versa.Find minimum missing positive number in a sequence.Check word in grid (depth-first search).Quick Sort sorting algorithm in pure immutable Scala. ![]() Make a queue using stacks (Lists in Scala).Remove duplicates from an unsorted List.Compute the length of longest valid parentheses.The for-comprehension is highly important syntatic enhancement in functional programming languages. ![]() (this is © from A more Scala way of representing whether a position is filled is using an Option of an enumeration (O | X), rather than a Boolean or some other type.įull explanation is available to subscribers Scala concepts & Hints There are other was of representing the board, such as Vector of Vector, or even a Map, but in this one, it is represented by a Vector, with mappings between Vector indices the the position on the board. In this case, the algorithm solution was implemented a TDD approach to allow for the most testable representation of the board. The first challenge in solving these two functions is how to represent the board. Upon purchase, you will be able to Register an account to access all the algorithms on multiple devices. 'Unlimited Scala Algorithms' gives you access to all the 99 published & 1 upcoming Scala Algorithms (100 total)! Or All the Scala Algorithms - US$8.49/month All the Scala Algorithms - US$84.90/year "If a spot is taken, the move is invalid"Īssert(TicTacToeBoard.invertPos(7) = (2 -> 1))ĥ6 lines of Scala (compatible versions 2.13 & 3.0). !sampleMoveSequence(1).isValidMove(0 -> 0), SampleMoveSequence2.flatMap(_.winner) = List(), Assert(sampleMoveSequence(0).winner.isEmpty, "Started game has no winner")Īssert(sampleMoveSequence(1).winner.isEmpty, "One move has no winner")Īssert(sampleMoveSequence(2).winner.isEmpty, "Two moves have no winner")Īssert(sampleMoveSequence(3).winner.isEmpty, "Three moves have no winner")Īssert(sampleMoveSequence(4).winner.isEmpty, "Four moves have no winner") ![]()
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