please complete this method /**  * Checks whether an item is inside the set.  * @param item to be checked  * @return true iff the set contains the item  */ public boolean contains(T item) { }

FaceUp card game In this assignment we will implement a made-up card game we'll call FaceUp. When the game starts, you deal five cards face down. Your goal is to achieve as high a score as possible. Your score only includes cards that are face up. Red cards (hearts and diamonds) award positive points, while black cards (clubs and spades) award negative points. Cards 2-10 have points worth their face value. Cards Jack, Queen, and King have value 10, and Ace is 11. The game is played by flipping over cards, either from face-down to face-up or from face-up to face-down. As you play, you are told your total score (ie, total of the face-up cards) and the total score of the cards that are face down. The challenge is that you only get up to a fixed number of flips and then the game is over. Here is an example of the output from playing the game: FACE-DOWN | FACE-DOWN | FACE-DOWN | FACE-DOWN | FACE-DOWN Face up total: 0 Face down total: -5 Number of flips left: 5 Pick a card to flip between 1…

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Practice / Frequency of Characters Write a method that returns the frequency of each characters of a given String parameter. If the given String is null, then return null If the given String is empty return an empty map Example input: output: empty map explanation: input is empty Example input: null output: null explanation: input is null. Since problem output is focused on the frequency we can comfortably use Map data structure. Because we can use characters as key and the occurrences of them as value. Example input: responsible output: {r=1, e=2, s=2, p=1, o=1, n=1, i=1, b=1, l=1} explanation: characters are keys and oc values ences are