Bubble Sort Example, C++ (clang)

Bubble Sort Example

// Bubble Sort Example

#include <iostream>
#include <stdlib.h> // rand srand
using namespace std;

#define SWAP(a,b) {int _temp_ = a; a = b; b = _temp_;}

int numberOfCompares = 0;

void bubbleSort(int *array, int n) 
{
    bool done = false;
    while (!done) 
    {
        done = true;
        for (int i=1; i<n; i++) {
            numberOfCompares++;
            if (array[i] < array[i-1]) {
                SWAP(array[i],array[i-1]);
                done = false;
            }
        }
    }
}

int main()
{
    int n, *array;
    cout << "Enter n: ";
    cin >> n;
    // create array of that size
    array = new int[n];
    cout << endl << "n = " << n << endl << endl;
    srand(1111);
    cout << "Initial array = ";
    for (int i=0; i<n; i++) {
        array[i] = n - i;
        cout << array[i] << " ";
    }
    cout << endl;
    bubbleSort(array, n);
    cout << "Sorted array = ";
    for (int i=0; i<n; i++) {
        cout << array[i] << " ";
    }
    cout << endl;
    cout << endl << "Number of comparisons = " << numberOfCompares << endl;
    return 0;
}


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