I need to write a Java code to implement a depth first search (DFS) algorithm to find the largest file on your hard drive, and to verify that the implementation of your algorithm works correctly and...

I need to write a Java code to implement a depth first search (DFS) algorithm to find the largest file on your hard drive, and to verify that the implementation of your algorithm works correctly and the largest file can indeed be identified, a breads first (BFS) search algorithm needs to be implemented in the unit test.