The member variable grade is assumed to hold a real number between 0.0 and 4.0. Implement the following functions: (a) static boolean find(LinkedList roster, float g) Returns true if there is at least one student in the roster whose grade is greater than or equal to g. 3 (b) void sort(LinkedList roster) Sorts the list of students by grade in decending order. (c) Pair low_high(LinkedList roster) Returns a pair whose first member is the lowest grade and second member is the highest grade of the roster.

Write a program that prints the day number of the year, given the date in the form month-day-year. for example, if the input is 1-1-2006, the day number is 1; if the input is 12-25-2006, the day number is 359. the program should check for a leap year. a year is a leap year if it is divisible by 4, but not divisible by 100. for example, 1992 and 2008 are divisible by 4, but not by 100. a year that is divisible by 100 is a leap year if it is also divisible by 400. for example, 1600 and 2000 are divisible by 400. however, 1800 is not a leap year because 1800 is not divisible by 400.