Question

***USE JAVA AND NO IMPORTS***

Method editString takes a string and breaks it into an array of single
       words which are then are edited based on the command
       Possible Commands:
       remove: for the sent words, remove those from the text
       replace: replace the word in an even element of words with a word in an odd element of words
       add: add the word given word in the index indicated after the word

       editString("What is up bro", "remove", ["bro"]) returns ["What", "is", "up"]
       editString("What is up bro", "replace", ["bro", "brother"]) returns ["What", "is", "up", "brother"]
       editString("What is up", "add", ["my", "3", "friend", "4"]) returns ["What", "is", "up", "my", "friend"]
       editString("I can only do so much", "remove", ["only", "so"]) returns ["I", "can", "do", "much"]
       editString("Tis but a flesh wound", "replace", ["flesh", "scratch", "wound", "mark"]) returns ["Tis", "but", "a", "scratch", "mark"]
       editString("I can code in java", "add", ["html", "4", "and", 5]) returns ["I", "can", "code", "in", "html", "and", "java"]
       @param text String of words
       @return an array of lowercased words in alphabetical order
   */
   public static ArrayList<String> editString(String text, String command, ArrayList<String> words)
   {
       ArrayList<String> edited = new ArrayList<String>();

   return edited;
   }//end editString

Answer 1

Please look at my code and in case of indentation issues check the screenshots.

---------------solution.java----------------

import java.util.*; // import the ArrayList, Scanner class

public class solution
{
   public static ArrayList<String> editString(String text, String command, ArrayList<String> words){
       ArrayList<String> edited = new ArrayList<String>();
       List<String> list = Arrays.asList(text.split(" "));   //convert text to List
       for(String w: list){                               //convert List to ArrayList
           edited.add(w);
       }

       if (command == "remove"){           //when command is remove
           for(String w: words){           //for each word in words, remove it from edited ArrayList
               edited.remove(w);
           }
       }

       else if(command == "replace"){       //when command is replace
           String from, to;
           for(int i = 0; i < words.size(); i = i+2){   //loop in words ArrayList
               from = words.get(i);                   //get from word and to word
               to = words.get(i+1);
               for(int j = 0; j < edited.size(); j++){   //loop in edited ArrayList
                   if(edited.get(j).equals(from))   //if String is from word, then change into to word
                       edited.set(j, to);
               }
           }
       }

       else if(command == "add"){       //when command is add
           int index;
           for(int i = 0; i < words.size(); i = i+2){       //loop for each word in words
               index = Integer.valueOf(words.get(i+1));   //get the index where we must add it
               edited.add(index, words.get(i));           //add the word at the given index
           }
       }
       return edited;
   }

   public static void printList(ArrayList<String> list){
       System.out.println("The list is: ");
       for(String w: list){
           System.out.print(w + " ");
       }
       System.out.println("\n");
   }

   public static void main(String[] args)
   {
       //for testing the method
       ArrayList<String> edited = new ArrayList<String>();
       ArrayList<String> words = new ArrayList<String>();

       System.out.println("editString(\"What is up bro\", \"remove\", [\"bro\"])");           //test case 1
       words = new ArrayList<String>(Arrays.asList("bro"));
       edited = editString("What is up bro", "remove", words);
       printList(edited);

       System.out.println("editString(\"What is up bro\", \"replace\", [\"bro\", \"brother\"])"); //test case 2
       words = new ArrayList<String>(Arrays.asList("bro", "brother"));
       edited = editString("What is up bro", "replace", words);
       printList(edited);

       System.out.println("editString(\"What is up\", \"add\", [\"my\", \"3\", \"friend\", \"4\"])"); //test case 3
       words = new ArrayList<String>(Arrays.asList("my", "3", "friend", "4"));
       edited = editString("What is up", "add", words);
       printList(edited);

       System.out.println("editString(\"I can only do so much\", \"remove\", [\"only\", \"so\"])"); //test case 4
       words = new ArrayList<String>(Arrays.asList("only", "so"));      
       edited = editString("I can only do so much", "remove", words);
       printList(edited);

       System.out.println("editString(\"Tis but a flesh wound\", \"replace\", [\"flesh\", \"scratch\", \"wound\", \"mark\"])");
       words = new ArrayList<String>(Arrays.asList("flesh", "scratch", "wound", "mark")); //test case 5
       edited = editString("Tis but a flesh wound", "replace", words);
       printList(edited);

       System.out.println("editString(\"I can code in java\", \"add\", [\"html\", \"4\", \"and\", \"5\"])"); //test case 6
       words = new ArrayList<String>(Arrays.asList("html", "4", "and", "5"));
       edited = editString("I can code in java", "add", words);
       printList(edited);
   }
}

--------------Screenshots--------------------

------------------Output------------------

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