java language with explanation please

The Task The IRL manatees have been racing up and down a channel between the several islands. Several manatees have been seriously injured in multi-manatee pileups in the narrow channel. Hugh Manatee has devised some safety rules to prevent further injuries. Hugh must keep a distance of at least pli + 1) units behind any other manatee M. n is the number of manatees in between Hugh and M, and p is determined by Hugh's weight class (a deceleration constant). Given the value of p and the current distances (in random order) to each of the manatees in front of Hugh, calculate the minimum distance Hugh should keep behind the manatee directly in front of him in order to avoid multi-manatee pileups. Input/Output The first line is the number n of manatees ahead of Hugh 1