Computers and Technology, 20.02.2020 23:55 jwbri

In a package named "execution", implement the following classes: • class Valuable • • Constructor takes one variable as a parameter named "item" of type Valuable (use var) • This class represents someone with a valuable item they are wiling to trade. Each trader can only own 1 item at a time which is stored in the "item" state variable • class TradeAgreement • Constructor takes 2 objects of type Trader • One method named "executeTrade" that take no parameters and returns Unit • When this method is called, swap the items belonging to the 2 traders from the constructor (ie. When a TradeAgreement is created, 2 people are agreeing to a trade. When executeTrade is called, they physically trade those items) • The agreement can only be executed once. If this method is called more than once for a single agreement, additional trades are not made (ie. The people do not trade back to their original items if this method is called twice)

Testing: In a package named "tests" create a Scala class named "TestTrading" as a test suite that tests all the functionality listed above

Answers: 1

Show answers

Answers

Answer from: Quest

which functions return a valid value without any arguments?

(-blank- and -blank- return a valid value without any arguments.)

1st -blank-

today

sqrt

count

2nd -blank-

round

now

sqrt

Answer from: Quest

These are very for instance for math pemdas parenthesis, exponents, multiplication, division, addition, subtraction without that i would never be able to remember what to do first with it i can remember.

Answer from: Quest

(java)3. the answer is (c): x[2] = 12; if x is an array with three elements, the first element has index 0. the second index has index 1. the third and final element has index 2.4. the answer is (d) for (int y : x) { system.out.println (y) ; }this is an example of syntax of a "for-each loop."for each element in the integer array x, use y to indicate the current element to do some code with it.the other choice, (c) for (int x : y) { system.out.println (y) ; }. in a for-each loop, the variable to the right of the colon is the array variable; the one to the left is the control variable.choices (a) and (b) have invalid syntax.5. the answer is (a) int x = {1, 2, 3, 5, 10}; you need to indicate that it is an array using []. without using [], you are trying to assign an array to an integer. you need to use int[] to indicate integer array.so choice (a) has incorrect syntax.

Answer from: Quest

Public static int mystery(int a[], int x) { int c = 0; for(int i = 0; i < a.length; i++) { if (a[i] == x) c++; } return c; }the method counts how many times an integer shows up in an integer array.the c variable is declared in the method to keep track of how many times the certain value has shown up.the for-loop loops through the entire array.the line if (a[i] == x) c++; checks if each element of the array is equal to the inputted integer to check. for each number in the array that is equal to the inputted integer x, the c variable will be incremented by 1. otherwise it will do nothing.then c is returned at the end of the loop.for example, if we have, in the main method with the mystery method coded in the class: int arraytest[] = {2, 23, 23, 23, 3}; int testme = 23; int count = mystery(arraytest, testme); system.out.println(count); then the print out will be 3 because there are three 23s in that array.

Another question on Computers and Technology

Computers and Technology, 22.06.2019 00:20

The pyraminx is a rubik's cube-type toy in the shape of a tetrahedron (not a pyramid). the pyraminx shown below has edges 15\,\text{cm}15cm15, space, c, m long and vertical height h=12.2\,\text{cm}h=12.2cmh, equals, 12, point, 2, space, c, m. the triangle drawn with dashed lines is a right triangle. what is the distance rrr? round your answer to the nearest tenth.

Answers: 1

Answer

Computers and Technology, 23.06.2019 03:30

Ihave a singular monitor that is a tv for my computer. recently, i took apart my computer and put it back together. when i put in the hdmi cord and booted the computer to see if it worked, the computer turned on fine but the screen was blue with "hdmi no signal." i've tried everything that doesn't require buying spare parts, any answer is appreciated!

Answers: 1

Answer

Computers and Technology, 23.06.2019 06:40

What are the three uses of a screw?

Answers: 2

Answer

Computers and Technology, 23.06.2019 12:40

According to the video what are some tasks petroleum engineers perform check all that apply

Answers: 2

Answer

You know the right answer?

In a package named "execution", implement the following classes: • class Valuable • • Constructor ta...