What is the minimum number of make set() and union() operations to obtain a set whose tree depth is 2? Using English letters for keys, list an example sequence of commands in the order they need to be executed as well as the resulting data structure to obtain a tree of depth 2. (Note: The union-by-rank is used, however, union uses find() internally and the path compression might be reducing the tree depth when making unions. Make sure to consider this when specifying the commands.)

Using the list, you can select the number of photos that will appear on each slide. a. theme b. frame shape c. pictures in album d. picture layout

Which of the following statements is false? a. a class can directly inherit from class object. b. if the class you're inheriting from declares instance variables as private, the inherited class can access those instance variables directly. c. a class's instance variables are normally declared private to enforce good software engineering. d. it's often much more efficient to create a class by inheriting from a similar class than to create the class by writing every line of code the new class requires.

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