Then make it private and make it be isEmptyOrOOB. MathJax reference. I'm currently on Chapter 12 of 13. Why does Slowswift find this remark ironic? I don't immediately see any invariant worth checking. https://www.youtube.com/watch?v=xUWuZjadbbQ, Source code for WeightedQuickUnionUF: http://algs4.cs.princeton.edu/15uf/WeightedQuickUnionUF.java.html, [1] Reference: https://www.cs.princeton.edu/courses/archive/fall15/cos226/assignments/percolation.html. Thanks for contributing an answer to Code Review Stack Exchange! How to sustain this sedentary hunter-gatherer society? Did you try perc.N? Junilu Lacar wrote:I noticed that you are doing bounds checking in a private method. You probably tried to just reference N directly, right? As a matter of standard coding style, only constants (static final) are all caps. Specification Trying to do Algortihm Course Assignments.Finished it long time ago.So I don’t remember too much about the details. rev 2020.11.24.38066, The best answers are voted up and rise to the top, Code Review Stack Exchange works best with JavaScript enabled, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site, Learn more about Stack Overflow the company, Learn more about hiring developers or posting ads with us, @I'lladdcommentstomorrow well, not exactly (my bad). site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. There's no "convenience" gained in writing 'getN()' vs. just 'N' or 'getGridSize()' vs just 'gridSize', if you follow my previous advice. There is an. You'll probably go for the easy win and extract the conditional expressions of the if statements but see what you can do to clarify and generalize the intent of the statements inside the if statements because those look like they could use a little DRYing out. Why is it easier to carry a person while spinning than not spinning? Ranch Hand Posts: 50. Bounds checking should be done in methods that are part of the class API, that is, any method that can be called by someone else and you have no way of controlling the validity of the values being passed in. * Each site is either open or blocked. If you keep the N name, that might be a compelling reason to provide a better-named accessor like getSize() or getGridSize(), even if it only just returns the value of N directly. Hint: an intention-revealing name such as isOutOfBounds() is almost always better than a comment. There should be no need to do bounds checking in private methods since you have control over the calls made to it. What's more, since it has a wide scope of use, it should be more self documenting. Consider naming it propagate because it changes the full status as it goes! 'gridSize' or just 'size' would be better names instead of 'N'. "A full site is an open site that can be connected to an open site in the top row via a chain of neighboring (left, right, up, down) open sites [1]". If it isn't, then you'd have a bug. Percolation.java. Edit: I was looking at your use of getN() again and realized that you don't even need access to N. Just print out GRID_SIZE -- that should be the same as N anyway. I strongly encourage you to do something similar. It should at least return at least a success result! Yes, perc.N works, so I yanked the get method out. Is the trace distance between multipartite states invariant under permutations? I think it can still be considered a pathfinding problem. reply from potential PhD advisor? 'N' goes against this convention. Percolation.java. Create a program PercolationDirected.java that tests for directed percolation (by leaving off the last recursive call in the recursive flow () method in Percolation.java, as described in the text), then use PercolationPlot.java to draw a plot of the directed percolation probability as a function of the site vacancy probability p. Code Review Stack Exchange is a question and answer site for peer programmer code reviews. So don't check it anew before calling it: BUT you'd need to let that method return false when out of bounds isntead of raising the exception. Did you try perc.N? Also, since you won't be changing the value after it is initialized in the constructor, it might be a good idea to declare it as. Submit a.zip file containing only Submit only Percolation.java (using the weighted quick-union algorithm from WeightedQuickUnionUF) and PercolationStats.java.

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