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I

I enjoyed this course. It gives a pretty good view into the more useful parts of the language and definitely makes a great case for a Java developer to become a Kotlin convert. My only complaints about this course are in regard to the GameOfFifteen assignment. The README on what they are looking for points to a web version of the game and basically says to implement an isEven function to check if a permutation is solvable and then implement the game interface to get everything working. The problem is this: I implemented my game just the way the web game works - specifically, my game chose a random cell to be the empty cell upon initialization, just as the web game did. I also set up my "hasWon" state to be the case where the numbers are in order AND the empty cell is in the bottom-right position, just as the web game seemed to be showing. When I ran the tests on my project, they failed. I had to do a debug deep dive to find that the tests are expecting that hasWon can be true regardless of the position of the empty cell, as long as the numbers are in order and to find that the tests expect the game to always initialize with the empty cell in the bottom-right position. It was easy enough to fix my game to match their tests rather than the example game, but I lost some time unnecessarily to this. It would probably be helpful to others who take this course if a couple simple notes in the README were added to indicate that the game should initialize with the empty cell in the bottom-right position and that the game is won if the cells are in ascending numerical order regardless of the position of the empty cell.