DotPuzzle

public struct DotPuzzle

A DotPuzzle ADT represents a connect-the-dots puzzle that is in the middle of being solved. To that end, the abstract state of this ADT is two properties:

  • conected: a list of dots that have already been connected, in the order that they were connected.
  • unconnected: a list of dots that have yet to be connected, in the order that the should be connected.

Both sequences can be represented as arrays of Dots.

  • The points that have been connected.

    Declaration

    Swift

    public let connected: [Dot]

  • The points that have not been connected.

    Declaration

    Swift

    public let unconnected: [Dot]

  • Create a new puzzle from an array of points, ordered in the way they should be numbered (labelled…) and connected.

    Declaration

    Swift

    public init(_ points: [CGPoint])

    Parameters

    points

    All points in the Puzzle.

  • Create a new DotPuzzle that has the same dots as self, but with the first unconnected dot now being the last connected dot.

    Requires: unconnected is not empty

    Declaration

    Swift

    public func connectOneMoreDot() -> DotPuzzle

    Return Value

    a new DotPuzzle reflecting that change.