We use cookies to ensure you have the best browsing experience on our website. Please read our cookie policy for more information about how we use cookies.
  1. Prepare
  2. Java
  3. Data Structures
  4. Java Arraylist
  5. Discussions

Java Arraylist

  • boleke
     + 18 comments
        Scanner in = new Scanner(System.in);
    int n = in.nextInt();
    int d,q,x,y;
    ArrayList[] set = new ArrayList[n];
    for(int i=0;i<n;i++){
        d = in.nextInt();
        set[i] = new ArrayList();
        for(int j=0;j<d;j++){  
            set[i].add(in.nextInt());                
        }
    }
    q=in.nextInt();
    for(int i=0;i<q;i++){
        x=in.nextInt();
        y=in.nextInt();
        try{
            System.out.println(set[x-1].get(y-1));
        } catch(Exception e){
            System.out.println("ERROR!");
        }
    }