RecursiveBubbleSort.cpp

// C++ program for recursive implementation
// of Bubble sort
#include <bits/stdc++.h>
using namespace std;
 
// A function to implement bubble sort
void bubbleSort(int arr[], int n)
{
    // Base case
    if (n == 1)
        return;
 
    int count = 0;
    // One pass of bubble sort. After
    // this pass, the largest element
    // is moved (or bubbled) to end.
    for (int i=0; i<n-1; i++)
        if (arr[i] > arr[i+1]){
            swap(arr[i], arr[i+1]);
            count++;
        }
 
      // Check if any recursion happens or not
      // If any recursion is not happen then return
      if (count==0)
           return;
 
    // Largest element is fixed,
    // recur for remaining array
    bubbleSort(arr, n-1);
}
 
/* Function to print an array */
void printArray(int arr[], int n)
{
    for (int i=0; i < n; i++)
        cout<<arr[i]<<" ";
    cout<<"\n";
}
 
// Driver program to test above functions
int main()
{
    int arr[] = {64, 34, 25, 12, 22, 11, 90};
    int n = sizeof(arr)/sizeof(arr[0]);
    bubbleSort(arr, n);
    cout<<"Sorted array : \n";
    printArray(arr, n);
    return 0;
}