prevents either sender or receiver from denying a transmitted message; when a message is sent the receiver can prove that the alleged sender in fact sent the message and when a message is received the sender can prove that the alleged receiver in fact received the message.

The animal classthis class represents a an animal residing at a zoo. it has a weight (in pounds),height (in inches), a name, and a color. the methods in the class include constructors,getters, and a tostring. you will finish the implementation of these methods. referto the code documentation.1.getters: you will need to implement getter methods. these get a value (froma member variable) in the animal class. you will make a getter method toreturn each variable (weight, height, name, color). reference getname if youare having issues.2.tostring: you will need to finish the tostring method. this returns a stringcontaining information about an animal. the output string should be of theformat: ” (name) , a ( color )â’colored animal . ( weight ) pounds , ( height ) inches .\n”the height and weight are formatted to 1 decimal place. recall from lab 1how to format strings neatly using string. see the reference sectionfor more about string.format.

The total cost of textbooks for the term was collected from 36 students. create a histogram for this data. $140 $160 $160 $165 $180 $220 $235 $240 $250 $260 $280 $285 $285 $285 $290 $300 $300 $305 $310 $310 $315 $315 $320 $320 $330 $340 $345 $350 $355 $360 $360 $380 $395 $420 $460 $460

1. ask the user how many questions are in the quiz. 2. ask the user to enter the key (that is, the correct answers). there should be one answer for each question in the quiz, and each answer should be an integer. e.g., 34 7 13 100 81 3 9 10 321 12 might be the key for a 10-question quiz. you will need to store the key in an array. 3. ask the user to enter the answers for the quiz to be graded. there needs to be one answer for each question. note that these answers do not need to be stored; each answer can simply be compared to the key as it is entered. 4. when the user has entered all of the answers to be graded, print the number correct and the percent correct. 5. add a loop so that the user can grade any number of quizzes with a single key. after the results have been printed for each quiz, ask "grade another quiz? (y/n)." note: you only have one array (the key). you are not creating a new key for each set of quiz answers.