Bubble Sort
The basic steps in the Bubble Sort algorithm is to:
- traverse from left and compare adjacent elements and the higher one is placed at right side.
- In this way, the largest element is moved to the rightmost end at first.
- This process is then continued to find the second largest and place it and so on until the data is sorted.
Algorithm Visualised
Code
Click to expand
// Optimized implementation of Bubble sort
#include <bits/stdc++.h>
using namespace std;
// An optimized version of Bubble Sort
void bubbleSort(int arr[], int n)
{
int i, j;
bool swapped;
for (i = 0; i < n - 1; i++) {
swapped = false;
for (j = 0; j < n - i - 1; j++) {
if (arr[j] > arr[j + 1]) {
swap(arr[j], arr[j + 1]);
swapped = true;
}
}
// If no two elements were swapped
// by inner loop, then break
if (swapped == false)
break;
}
}
// Function to print an array
void printArray(int arr[], int size)
{
int i;
for (i = 0; i < size; i++)
cout << " " << arr[i];
}
// 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;
}
// This code is contributed by shivanisinghss2110