Programming & Computer Science Answers

Write a program to convert decimal to octal or decimal to hexadecimal or decimal to binary digits and then display the decimal number along with its changed form. Use only for loop or while loop and java.util.* package

(E.g.)The output must be like below-

Press A to convert the decimal into octal:

Press B to convert the decimal into hexadecimal:

Press C to convert the decimal into binary:

Enter a decimal number: 4.8

Its binary form: 100.11001100110

_______________________________________________________________________

**I pressed C so I got its binary form, If I have pressed B then it would have been like this-

Its hexadecimal form: 4.CCCCCCCCCCC

BTW above is for 4.8e10

Write a program to check and display whether the number is Goldbach number or not using only for loop or while loop & java.util.* package

The output must be like below-

Enter a number:

6

Goldbach number

Your task is to find the sum of the length of all lines (in kms) that can be drawn between co-ordinates of these countries.

• Assume radius of earth: 6371 km
• Round length of each line and final result to 2 decimal points
• If co-ordinates are missing for any country use 0.000 N 0.000 E

Population limit: 65847

Your task is to find the sum of the length of all lines (in kms) that can be drawn between co-ordinates of these countries.

• Assume radius of earth: 6371 km
• Round length of each line and final result to 2 decimal points
• If co-ordinates are missing for any country use 0.000 N 0.000 E

Create a program using recursion with data structure show the code and the output.

class QuizBrain:

def __init__(self, q_list):

self.question_number = 0

self.question_list = q_list

def still_has_question(self):

if self.question_number < len(self.question_list):

return True

else:

False

def next_question(self):

current_question = self.question_list[self.question_number]

self.question_number += 1

user_answer = input(f"Q.{self.question_number}: {current_question.text} (True/False):")

self.check_answer(user_answer, current_question.answer)

def check_answer(self, user_answer, correct_answer):

if user_answer.lower() == correct_answer.lower():

print("You got this right!")

else:

print("That's wrong")

print(f"The correct answer was: {correct_answer}")

add a score:

sample output:

Your Score is 1/1

Write a do-while loop that continues to prompt a user to enter a number less than 100, until the entered number is actually less than 100

Type a statement using srand() to seed random number generation using variable seedVal. Then type two statements using rand() to print two random integers between (and including) 0 and 9

Listing 102

by CodeChum Admin

We've already made listing an array the easy way, but how about listing and printing the array in reverse order?

Make a program that will input an integer and then using loops, add items on an array/list one by one for the same number of times as that of the first inputted integer. Then, print out the array/list in ascending order. After doing that, print the array again on the next line in reverse order, that is, starting from the last item on the array/list down to the first one, each in separated lines.

Input

The first line contains the size of the array.

The next lines contains the items of the array (integers).

5
1
64
32
2
11

Output

The first line contains the elements of the array printed in ascending order.

The second line contains the elements of the array printed in reversed order.

1·64·32·2·11
11·2·32·64·1

Only the Even Ones

by CodeChum Admin

I have an array of 3 numbers here with me that's already in the code editor, but I want you to add some more to this list by inputting some more numbers yourself in one line and then, print out only the even numbers from the array.

Can you do that for me?

Input

The first line contains the number of elements, n, to be added.

The next line contains the n integers separated by a space.

5
33·54·32·11·8

Output

Multiple lines containing an integer.

2
54
32
8