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While the method is O(n^2), it does work. The set provides a unique list of colors which are then used against the list to get counts. The only difference in liuyushan's code is that he assigns the set to a variable.
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While the method is O(n^2), it does work. The set provides a unique list of colors which are then used against the list to get counts. The only difference in liuyushan's code is that he assigns the set to a variable.