Programming & Computer Science Answers

Number Diamond

Given an integer N as input,

write a program to print a number diamond of 2*N -1 rows as shown below.

Note: There is a space after each number.

In the given example, the number of rows in the diamond is 5

So, the output should be

   1 

   1 2 

 1 2 3 

 1 2 3 4 

1 2 3 4 5 

 1 2 3 4 

 1 2 3 

  1 2 

1

Your code:

N = int(input())

rows = []

for number in range(1, N + 1):

  rows.append(' '.join([str(x) for x in range(1, number + 1)]))

for number in rows[::-1][1::]:

  rows.append(number)

diamond = '\n'.join([x.center(2* N - 1) for x in rows])

print(diamond)

the above code works fine but only 7/10 test cases are passed

for input 15 the output is not the same as expected

Refer to the document in the link below 

https://docs.google.com/document/d/1Un_RPlLjEqNbbkJDegaqVkYLedITyQdXRKugY24hJWk/edit?usp=sharing

The motorway management perceives that the waiting time computed in (a) above is not acceptable and it wishes to reduce it, first, by adding an extra tollbooth assistant to help improve the service rate to 250 motorists every 8-hour-day. The tollbooth attendant will be paid a monthly salary of GH¢400. The second option is that management can add a toll-operated machine which will cost GH¢3,000 and this amount is a free gift from the Minister. This option will reduce the arrival rate to 35 motorists every 2 hours. However, management will have to pay the operator who will man the toll-operated machine a monthly salary of GH¢550. Whichever option management adopts; they avoid lost sales of GH¢1,200.00 per month for every minute that average waiting time is reduced. Advise management which option it must adopt?

Discuss, in detail, reasons why an operating system is considered as

a resource manager; and explain how it manages the various

resources in the context of computer-based information systems

in use at a financial institution

Write a program that uses while loops and perform the following steps:

1) Prompt the user to input two integers: start and end (start must be less than end).

2) Output the average of the even numbers between start and end.

1. Age-related maculopathy is a leading cause of blindness among people 65 and older in the United States, and is estimated to affect between 16 and 26% of people in this age group. In a recent study by Klein, residents aged 43 to 86 years in the town of Beaver Dam, Wisconsin were asked to participate in a study to determine whether cigarette smoking was related to age-related maculopathy. At a baseline examination, participants were asked to report their lifetime smoking habits. After 5 years, participants had an examination to determine whether they had developed age-related maculopathy. The following table presents the number of cases of age-related maculopathy measured at the follow-up examination among the 1232 male participants ages 43-86 who did not have age related maculopathy (ARM) at the baseline examination:

Smoking status

N

Cases of ARM

Never smokers

368

26

Ever smokers

864

79

1. Create a 2 x 2 table where one axis is smoking status and the other is age-related maculopathy status. (4 pts)
   

A technician is setting up a new wireless network at a branch office that previously had only wired

connectivity with statically assigned IP addresses. After setting up the network, the technician 

configures a server to provide IP addresses to wireless clients. During testing, the technician is 

unable to access the Internet or named network resources. The technician receives a valid IP 

address from the DHCP server and can ping the default gateway.

Explain various steps that can be taken to resolve this issue. (each step highlighted MUST be 

accompanied by the intended solution the step hopes to achieve)

Dumbledore's Luncheon

Dumbledore is hosting a luncheon at Hogwarts, and Ron is incharge of the sitting plans.

Dumledore’s dining table can be thought of as an infinite row of seats with Dumbledore at one

end. Each of Dumbledore’s guests represents a character of English alphabet (a to z).

Dumbledore wants his guests to be seated such that the resulting string formed from the

alphabets should be lexicographically smallest (See examples for reference). He didn’t tell Ron

the total number of guests coming, but he will ask Ron to close the gate once all the guests

arrive (marking the end of incoming guests).

The rules of seating are as follows:

● Seats are allotted in sequential order, a guest who arrives later must be further from

Dumbledore than a guest who arrives earlier.

● An incoming guest must be assigned a seat, as soon as he arrives. He will take a seat.

what  is the programming paradigm that answers the question how the result was obtained

we wish to store a large set of keyed data items where each item's key is the name of a ship Let's call this data item a Ship.

Each Ship item also stores numerous other data fields beside, ship's name which describes other properties of the ship, such as the number of sacks of grain that can be stored in the ship hold, the number of sacks currently in the ship hold, a list of the names of each member of the crew and their percentage share of the booty.

further suppose that the captain, does not keep all of his ships clustered together

in a single group in order to avoid detection. Instead, the captain keeps his ships grouped into multiple separate groups of ships called task forces.

Task 2)

Assume that primary purpose for storing these Ship keyed data items is to be able

to look up which task force a ship is in. In own words,

tell advantages and disadvantages (if any) for each JAVA ADTs

. Hash table

. Graph

. AVL Tree/BST tree

. Union-find/Disjointed data

which ADTs is best choice for this purpose, why.