Program51.java

public class Program51 {

    //buble sort
    public static void printArray(int[] arr) {
        for (int i = 0; i < arr.length; i++) {
            System.out.print(arr[i] + " ");
        }
        System.out.println();
    }
//time complexity: O(n^2)
//space complexity: O(1)

    public static void main(String[] args) {
        int[] arr = {7, 8, 3, 1, 2};

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

                }
            }

        }
        printArray(arr);
    }
}