Question

Question 1 For an assignment you wrote the method sortByLargestDepth in the class QuakeSortInPlace to sort earthquakes by their depth from largest depth to smallest depth using the selection sort algorithm. Modify this method to do exactly 50 passes and then modify testSort to run this method on the file earthQuakeDataDec6sample2.atom. The file may not be completely sorted as there are more than 50 quakes in the file. After running your program of 50 Selection sort passes on this file, what is the depth of the last earthquake in the ArrayList?

Answer 1

Cannot determine the depth without executing the program; selection sort will not necessarily sort the entire dataset with only 50 passes on a dataset larger than 50 elements.

Step-by-step explanation:

The correct answer to the question on modifying the sortByLargestDepth method to perform 50 passes using the selection sort algorithm, and the resulting depth of the last earthquake in the ArrayList after running the modified program, cannot be determined without actually executing the program with the given dataset (earthQuakeDataDec6sample2.atom).

Typically, this kind of question would require one to run the code and observe the output to provide an accurate answer.

In selection sort, after 50 passes on a dataset with more than 50 elements, the last element would not necessarily represent the smallest depth or be in complete sorted order unless the 50th largest depth happens to be at the end of the 50 passes due to the dataset's initial ordering or distribution.

In the method sortByLargestDepth in the QuakeSortInPlace class, you can modify the algorithm to perform exactly 50 passes using the selection sort algorithm. After running the program, you can determine the depth of the last earthquake in the ArrayList.

In Java, an ArrayList allows you to access elements by their index. To find the depth of the last earthquake, you can use the ArrayList.get() method, specifying the index as ArrayList.size() - 1 to get the last element.