HackerRank Java- Iterator
In this problem you need to complete a method func. The method takes an ArrayList as input. In that ArrayList there is one or more integer numbers, then there is a special string "###", after that there are one or more other strings. A sample ArrayList may look like this:
element[0]=>42
element[1]=>10
element[2]=>"###"
element[3]=>"Hello"
element[4]=>"Java"
You have to modify the func method by editing at most 2 lines so that the code only prints the elements after the special string "###". For the sample above the output will be:
Hello
Java
- import java.util.*;
- public class Main{
-
- static Iterator func(ArrayList mylist){
- Iterator it=mylist.iterator();
- while(it.hasNext()){
- Object element = it.next();
- if(element instanceof String)//Hints: use instanceof operator
-
- break;
- }
- return it;
-
- }
- @SuppressWarnings({ "unchecked" })
- public static void main(String []args){
- ArrayList mylist = new ArrayList();
- Scanner sc = new Scanner(System.in);
- int n = sc.nextInt();
- int m = sc.nextInt();
- for(int i = 0;i<n;i++){
- mylist.add(sc.nextInt());
- }
-
- mylist.add("###");
- for(int i=0;i<m;i++){
- mylist.add(sc.next());
- }
-
- Iterator it=func(mylist);
- while(it.hasNext()){
- Object element = it.next();
- System.out.println((String)element);
- }
- }
- }
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