Write a method called buildString that accepts an ArrayList of strings as a para

Question

Write a method called buildString that accepts an ArrayList of strings as a parameter and return a String as the output. You should go through the ArrayList and extract every other word, concatenate it as a String and return that string. For example , if the list originally contains the string values of {"how","are","now?"} before the method was called then the String produced will be "how are you now?". Write a method called buildString that accepts an ArrayList of strings as a parameter and return a String as the output. You should go through the ArrayList and extract every other word, concatenate it as a String and return that string. For example , if the list originally contains the string values of {"how","are","now?"} before the method was called then the String produced will be "how are you now?".

Explanation / Answer

import java.util.*;

class Test{

   public static String buildString(ArrayList AL){
   String str ="";
   for(int i=0; i<AL.size(); i++){
       if(i!=AL.size()-1)
       str += AL.get(i) + " ";
       else
       str += AL.get(i);
   }
   return str;
}
   public static void main(String[] args){
   ArrayList AL = new ArrayList();
   AL.add("how");
   AL.add("are");
   AL.add("you");
   AL.add("now");
   System.out.println(buildString(AL));
   }
}

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