bubble.cpp

#include <iostream>
using namespace std;

void bubbleSort(int arr[], int n) {
    bool swapped;

    for (int i = 0; i < n - 1; i++) {
        swapped = false;

        for (int j = 0; j < n - i - 1; j++) {
            if (arr[j] > arr[j + 1]) {
                // swap
                int temp = arr[j];
                arr[j] = arr[j + 1];
                arr[j + 1] = temp;

                swapped = true;
            }
        }

        // optimization: stop early if already sorted
        if (!swapped)
            break;
    }
}

void printArray(int arr[], int n) {
    for (int i = 0; i < n; i++)
        cout << arr[i] << " ";
    cout << endl;
}

int main() {
    int arr[] = {5, 1, 4, 2, 8};
    int n = sizeof(arr) / sizeof(arr[0]);

    bubbleSort(arr, n);

    cout << "Sorted array: ";
    printArray(arr, n);

    return 0;
}