public static void main(String[] args) {
        int arr[] = {18, 1, 13, 15, 4, 7, 7};
        int temp = 0;
        for (int i = 0; i < arr.length - 1; i++) {

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

            }
        }
        for (int i = 0; i < arr.length; i++) {
            System.out.println(arr[i]);
        }
    }