JavaScript — Arrays

1 Sum of array elements Easy 2 Find maximum in array Easy 3 Filter even numbers Easy 4 Remove duplicates Medium 5 Flatten nested array (one level) Medium 6 Sum 1..5 #1 Hard 7 Filter evens #2 Medium 8 Map squares #3 Easy 9 Max in set #4 Medium 10 Reduce product #5 Hard 11 Sum 1..10 #6 Medium 12 Filter evens #7 Easy 13 Map squares #8 Medium 14 Max in set #9 Hard 15 Reduce product #10 Medium 16 Sum 1..15 #11 Easy 17 Filter evens #12 Medium 18 Map squares #13 Hard 19 Max in set #14 Medium 20 Reduce product #15 Easy 21 Sum 1..5 #16 Medium 22 Filter evens #17 Hard 23 Map squares #18 Medium 24 Max in set #19 Easy 25 Reduce product #20 Medium 26 Sum 1..10 #21 Hard 27 Filter evens #22 Medium 28 Map squares #23 Easy 29 Max in set #24 Medium 30 Reduce product #25 Hard 31 Sum 1..15 #26 Medium 32 Filter evens #27 Easy 33 Map squares #28 Medium 34 Max in set #29 Hard 35 Reduce product #30 Medium 36 Sum 1..5 #31 Easy 37 Filter evens #32 Medium 38 Map squares #33 Hard 39 Max in set #34 Medium 40 Reduce product #35 Easy 41 Sum 1..10 #36 Medium 42 Filter evens #37 Hard 43 Map squares #38 Medium 44 Max in set #39 Easy 45 Reduce product #40 Medium 46 Sum 1..15 #41 Hard 47 Filter evens #42 Medium 48 Map squares #43 Easy 49 Max in set #44 Medium 50 Reduce product #45 Hard