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Natali5045456 [20]
3 years ago
5

Give a big-O estimate for the number of operations,

Computers and Technology
1 answer:
Kazeer [188]3 years ago
6 0

Answer:

Explanation:

For the first iteration of i for loop 1 to n, the j for loop will run from 2 to n times. i.e. n-1 times.

For the second iteration of i for loop, the j for loop will run from 3 to n times. i.e. n-2 times.

From the third to the last iteration of i for loop, the j for loop will run n-1 to n times. i.e. 2 times.

From the second to the last iteration of i for loop, the j for loop will run from n to n times. i.e. 1 time.

For the last iteration of i for loop, the j for loop will run 0 times because i+1 >n.

Hence the equation looks like below:

1 + 2 + 3 + ...... + (n-2) + (n-1) = n(n-1)/2

So the number of total iterations is n(n-1)/2.

There are two operations per loop, i.e. Comparison and Multiplication, so the iteration is 2 * n(n-1)/2 = n ^2 - n

So f(n) = n ^ 2 - n

f(n) <= n ^ 2 for n > 1

Hence, The algorithm is O(n^2) with C = 1 and k = 1.

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Assume that you have an array of integers named arr. The following program segment is intended to sum arr [0]through arr[n−1], w
Paladinen [302]

Answer:

There is only one modification in the above loop i.e. while loop should be like this--

while (i != n)

     {

         sum+=arr[i];   // Line 1, In question segment it is line 2.

          i++;                // Line 2,  In question segment it is line 1.

     }

Output:

Now if the array input is 1,2,3,4,5 then the output is 15.

Explanation:

In the above question, all the line of the segment is right except the body of the loop because--

  • The First line of the loop is increment statement which increments the value of "i" variable from 1 and the value of "i" variable will be 1 in the first iteration of the loop
  • The second line starts to add the value from 1'st index position of the array. Hence the segment gives the wrong answer. It adds the arr[1] to arr[n-1].
  • So I interchanged both lines of the while loop as shown in the answer part. I make the line 1 (In question segment) as line 2(In answer part) and line 2 (In question segment) as line 1 (In answer part).

Now It gives the correct output because it can add arr[0] to arr[n-1].

7 0
3 years ago
Which of the following best explains how the Internet is a fault-tolerant system?
IrinaK [193]

Answer:

A

Explanation:

The Internet is fault-tolerant because cybercriminals can conceal their actions, allowing them the ability to carry out faulty actions without leaving a trace.

This statement is actually the same question I had to answer when in my 2nd year 1st semester in itt.
<3 enjoy

8 0
2 years ago
Read 2 more answers
Is the internet a private place?
Ludmilka [50]
Hey there!

No, the internet is not a private place

I hope this helped! :-)
8 0
3 years ago
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Of the following which would be the best data representation for this puzzle in a puzzle class?
sladkih [1.3K]

please include the puzzle and or questions.

5 0
3 years ago
There are 22 gloves in a drawer: 5 pairs of red gloves, 4 pairs of yellow, and 2 pairs of green. You select the gloves in the da
AVprozaik [17]

Answer:

Best-case = 2 gloves

Worst-case = 12 gloves

Explanation:

  • For the best-case: Because there is a chance that you take two gloves of the same color in the first two round the answer is two.
  • For the worst-case: The worst case would be if, for each color-group of gloves you take the right or left glove, for example, you take 5 left-hand red gloves then 4 left-hand yellow gloves, then 2 left-hand green gloves, because you have already taken all of the left gloves the next one is going to be a right glove that is going to pair with one of the already selected gloves, therefore, the answer is 12 -> 5+4+2+1 = 12
3 0
3 years ago
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