Problem Submissions LeaderboardDiscussions Editorial e A set is an unordered collection of elements without duplicate entries. When printed, iterated or converted into a sequence, its elements will appear in an arbitrary order. Example >>> print set() set([]) >>> print set('HackerRank) set(['a','c', 'e', 'H','k', 'n', 'r', 'R']) >>> print set([1,2,1,2,3,4,5,6,0,9,12,22,3]) set ([0, 1, 2, 3, 4, 5, 6, 9, 12, 22]) >>> print set((1,2,3,4,5,5)) set ([1, 2, 3, 4, 5]) >>> print set (set(['H', 'a','c','k','e','r','r','a','n','k'])) set(['a', 'c', 'r', 'e', 'H', 'k', 'n')) >>> print set(' Hacker'DOSHI', Rank':616 ) set('Hacker', 'Rank']) >>> print set (enumerate(C'H','a','c','k','e','r,'r','a','n','k'])) set([ (6, 'r), (7, 'a'), (3, 'k), (4, 'e'), (5, 'r'), (9, 'k), (2, "c'), Basically, sets are used for membership testing and eliminating duplicate entries. as Now, let's use our knowledge of sets and help Mickey. Ms. Gabriel Williams is a botany professor at District College. One day, she asked her student Mickey to compute the average of all the plants with distinct heights in her greenhouse Formula used: Sum of Distinct Heights Total Number of Distinct Heights Average