public class demo2 {
    public static void main(String[] args) {
        int[] arr = {2,4,1,2,3,5,4};
        for (int i = 0; i <arr.length -1; i++) {
            for (int j = i+1; j <arr.length ; j++) {
                if (arr[i]>=arr[j]){
                    int a=arr[i];
                    arr[i] =arr[j];
                    arr[j]=a;
                }
            }
        }
        for (int i = 0; i <arr.length ; i++) {
            System.out.println(arr[i]);
        }

    }
}