Simple Intro to Java Assignment "[url removed, login to view]"
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The file name for this assignment should read "[url removed, login to view]"
The output must be EXACT or else it will not let me submit the assignment. By exact I mean even the same amount of spaces, lines, etc. Please make author name "alyssamcaparelli". So the code should say "@author alyssamcaparelli"
I would prefer for you to submit this assignment through a program called "Submit." I will have to give you my username and password for this so you can log on and submit it, because if there is even a small error in the code it won't let me submit and since I do not known java it is really hard for me to find the mistake.
Here are the directions:
submit [url removed, login to view] (9th Edition Page 213 5.1 modified; 10th edition Page 234 Exercise 6.1 modified)
Write [url removed, login to view] from page 212 Ninth edition.
" [url removed, login to view] (Math: pentagonal numbers) A pentagonal number is defined as n(3n–1)/2 for n=1,2, . . ., and so on.
Therefore, the first few numbers are 1, 5, 12, 22, . . ..
Write a method with the following header that returns a pentagonal number:
public static int getPentagonalNumber(int n)"
Pentagonal numbers illustration and general equation....
(THERE IS A PICTURE ATTACHED THAT GOES HERE IN THE DIRECTIONS)
Which is Pn = ( 3 * n2 - n )/2
Note for n =1 we have one vertex point
for n = 2 we share vertex points for n=1 and add four more points this gives a pentagonal P2= 5 points
For P3, we share vertex points of P2 and add 7 more points this gives P3 = 12 points
For P4 we add 10 more points + 12 from P3 gives a P4 = 22.
You will read a single integer from standard input and print out the the first n pentagonal numbers, where n was integer just read. All numbers will be printed space then number, last pentagonal number is new line terminated.
Sample Run 1 (Input 2):
Enter an integer: 2
The pentagonal numbers are: 1 5
Sample Run 2 (User input's 4):
Enter an integer: 4
The pentagonal numbers are: 1 5 12 22
Sample Run 3 (NetBeans output window user inputs 7)
Enter an integer: 7
The pentagonal numbers are: 1 5 12 22 35 51 70
BUILD SUCCESSFUL (total time: 7 seconds)
Hint the method getPentagonalNumber( int n ), is singular, but you can write your method to kick out and array 1..n.
For [url removed, login to view] with input 2, you will need to output:space1space5newline, so we print a space then a number. After computing all values add a newline.
Lets look at another example, you want to read in n and print out the squares of 1 up to n^2, last one is newline terminated.
For example, input n=3; Output: "The square numbers are: 1 4 9\n"
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