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This is question about C++ (bubblesort code) This question have wrong C++ code w

ID: 3663225 • Letter: T

Question

This is question about C++ (bubblesort code)

This question have wrong C++ code

what do I chang or fix to make bubblesort??(please explain me )

#ifndef __TICKS_H__
#define __TICKS_H__

// Function prototype for the "tick()" function
unsigned long long tick();
#endif

// Prototype for the "check" function to verify array properly sorted

#ifndef __CHECKIT_H__
#define __CHECKIT_H__

// Check array "data" is sorted properly up to data[size-1]
// Returns the count of errors (should be zero)

int CheckIt(int data[], int size);
#endif

#include <fcntl.h>
#include <iomanip>

#include <iostream>

#include <stdlib.h>

#include <sys/time.h>

#include "ticks.h"

#include "check-it.h"

using namespace std;

void BubbleSort(int data[], int size)

{ // Sort the array "data" of length "size" using bubblesort algorithm

// YOUR CODE HERE

}

int main()

{

// use the /dev/random device to get a random seed

// get a random seed for the random number generator

int dr = open("/dev/random", O_RDONLY);

if (dr < 0)

    {

      cout << "Can't open /dev/random, exiting" << endl;

      exit(0);

    }

int drValue;

read(dr, (char*)&drValue, sizeof(drValue));

// cout << "drValue " << drValue << endl;

srand48(drValue);

for (int size = 100; size <= 100000; size *= 10) // 100 to 100000 by 10

    {

      // Data is the array to sort, filled in with random values

      int data[size];

      // Randomize the data array

      for (int i = 0; i < size; ++i)

        {

          data[i] = drand48() * 100000;

        }

// Measure the execution time

      unsigned long long startTicks = tick();

      // Now call the bubble sort function

      BubbleSort(data, size);

      // Read the ending tick count

      unsigned long long endTicks = tick();

      // Check results

      int errorCount = CheckIt(data, size);

      if (errorCount == 0)

        {

          cout << "Congrats! sorted correctly size " << size << endl;

          cout << "Execution time is " << setw(12) << right

               << endTicks - startTicks << " ticks" << endl;

        }

      else

        {

          cout <<"Oops, " << errorCount << " errors found " << endl;

        }

    }

}

tick.h code check-it.h code

#ifndef __TICKS_H__
#define __TICKS_H__

// Function prototype for the "tick()" function
unsigned long long tick();
#endif

// Prototype for the "check" function to verify array properly sorted

#ifndef __CHECKIT_H__
#define __CHECKIT_H__

// Check array "data" is sorted properly up to data[size-1]
// Returns the count of errors (should be zero)

int CheckIt(int data[], int size);
#endif

Explanation / Answer

#include <fcntl.h>
#include <iomanip>

#include <iostream>

#include <stdlib.h>

#include <sys/time.h>

#include "ticks.h"

#include "check-it.h"

using namespace std;

void bubble_sort (int data[], int n)

{

for (int i = 0; i < n; ++i)

    for (int j = 0; j < n - i - 1; ++j)

      if (data[j] > data[j + 1])

     {

        int temp = data[j];

       data[j] = data[j + 1];

        data[j + 1] = temp;

      }

}       

int main()

{

// use the /dev/random device to get a random seed

// get a random seed for the random number generator

int dr = open("/dev/random", O_RDONLY);

if (dr < 0)

    {

      cout << "Can't open /dev/random, exiting" << endl;

      exit(0);

    }

int drValue;

read(dr, (char*)&drValue, sizeof(drValue));

// cout << "drValue " << drValue << endl;

srand48(drValue);

for (int size = 100; size <= 100000; size *= 10) // 100 to 100000 by 10

    {

      // Data is the array to sort, filled in with random values

      int data[size];

      // Randomize the data array

      for (int i = 0; i < size; ++i)

        {

          data[i] = drand48() * 100000;

        }

// Measure the execution time

      unsigned long long startTicks = tick();

      // Now call the bubble sort function

      BubbleSort(data, size);

      // Read the ending tick count

      unsigned long long endTicks = tick();

      // Check results

      int errorCount = CheckIt(data, size);

if (errorCount == 0)

        {

          cout << "Congrats! sorted correctly size " << size << endl;

          cout << "Execution time is " << setw(12) << right

               << endTicks - startTicks << " ticks" << endl;

        }

      else

        {

          cout <<"Oops, " << errorCount << " errors found " << endl;

        }

    }

}

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