Not accepting answer for given problem

#1

public static ArrayList All_idx(int n,int a[],int m,int i)
{
if(i==a.length)
{
ArrayList bs=new ArrayList<>();
return bs;
}
ArrayList ans=new ArrayList<>();
ArrayList aa=All_idx(n, a, m, i+1);

if(a[i]==m)
{
    aa.add(i);
}
ans=aa;
return ans;

}

public static void main(String[] args) {
    
	Scanner sc=new Scanner(System.in);

// String str;
// str=sc.nextLine();
//
// System.out.println(Pi_rem(str));

int n=sc.nextInt();
int a[]=new int[n];
for(int i=0;i<n;i++)
{
    a[i]=sc.nextInt();
}
int m=sc.nextInt();

ArrayList<Integer> aa=All_idx(n, a, m, 0);

Collections.reverse(aa);
System.out.println(aa);
}

}

#2

it is becoz u are printing arraylist
it print the output like [1,3]

so just print its value 1 3

but in the qn u have return an array
so pls try to implement it using an array
u will learn something new

becoz in the arraylist u dont have think about size of the list
but in array we require the size of the array

so pls try it by using array

hope this will help u
pls rate my work
pls

#3

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