Write a java program using ArrayList to allow the professor to enter student's name, his or her's four test scores, then display each student's average score and letter grade. The program should give professor option of type in "C" , meaning continue, to finish input student information. Display each student's average test score and letter grade. Submit the source code and screen shot.
Based on the program in the first assignment. Drop each student's lowest score first before calcuting their average test scores. Submit the source code and screen shot.