Question

What is wrong with the following code? How would you fix it? (Assume all the appropriate import statements)

/* print every other element in a linkedlist */

LinkedList<String> exampleLL = new LinkedList<String>();
exampleLL.add("Today");
exampleLL.add("is");
exampleLL.add("a");
exampleLL.add("sunny");
exampleLL.add("day");
exampleLL.add("outside");
​​​​​​​exampleLL.add("I");
​​​​​​​exampleLL.add("Like");
​​​​​​​exampleLL.add("summer");
​​​​​​​exampleLL.add("and");
​​​​​​​exampleLL.add("the");
​​​​​​​exampleLL.add("sunshine");
​​​​​​​exampleLL.add("it");
​​​​​​​exampleLL.add("brings");
​​​​​​​exampleLL.add("too;");
/* etc etc etc */

ListIterator iter = exampleLL.ListIterator();

System.out.println("Every other word of the speach:")

while (iter.hasNext()) {
System.out.println(iter.next().next());
}

Answer 1

import java.util.Iterator;
import java.util.LinkedList;

public class Itr {
   public static void main(String[] args) {
       /* print every other element in a linkedlist */

       LinkedList<String> exampleLL = new LinkedList<String>();
       exampleLL.add("Today");
       exampleLL.add("is");
       exampleLL.add("a");
       exampleLL.add("sunny");
       exampleLL.add("day");
       exampleLL.add("outside");

       /* etc etc etc */
       // listIterator is not available for LinkedList
       //only iterator is available
       Iterator iter = exampleLL.iterator();

       System.out.println("Every other word of the speach:");
       // we need to call only next on this
       while (iter.hasNext()) {
       System.out.println(iter.next());
       }

   }
}

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