Question

can someone please help me with my computer science homework. i am not sure if i am doing it correctly i would like your answer so i can compare with mine

Create an ArrayList with the below state codes in it. AL AK AZ AR CA TX MA Once the ArrayList is created do below operations 1. Add the state PA in the ArrayList at the end 2. Search through the ArrayList and replace the state CA with FL 3. Loop through the array and print out each state and its index positions 4. Remove the new state added - PA

Answer 1

// Java Code:-

import java.util.*;
public class Main
{
   public static void main(String[] args) {
   ArrayList<String> states_code=new ArrayList<String>();
   states_code.add("AL");
   states_code.add("AK");
   states_code.add("AZ");
   states_code.add("AR");
   states_code.add("CA");
   states_code.add("TX");
   states_code.add("MA");
  
   //adding PA at the end of the ArrayList.
   states_code.add("PA");
  
   // Replace CA with FL in ArrayList.
   for(int i=0;i<states_code.size();i++)
   {
   if(states_code.get(i).equals("CA"))
   states_code.set(i,"FL");
   }
     
   //Loop through arrayand print the state code and its index postion.
   System.out.println("Index State");
   for(int i=0;i<states_code.size();i++)
   System.out.println(i+" "+states_code.get(i));
     
   // Remove the new state added PA (which is the last element of the ArrayList).
   states_code.remove(states_code.size()-1);
   }
}

8 9 12 Main.java 1 import java.util.*; 2 public class Main 3.{ 4 public static void main(String[] args) { 5 ArrayList<String> states_code=new ArrayList<string>(); 6 states_code.add("AL"); 7 states_code.add("AK"); states_code.add("AZ"); states_code.add("AR"); 10 states_code.add("CA"); 11 states_code.add("TX"); states_code.add("MA"); 13 14 //adding PA at the end of the ArrayList. 15 states_code.add("PA"); 16 17 // Replace CA with Fl in ArrayList. 18 for(int i=0;i<states_code.size();i++) 19 20 if(states_code.get(i).equals("CA")) 21 states_code.set(i, "FL"); 22 } 23 24 //Loop through arrayand print the state code and its index postion. 25 System.out.println("Index state"); 26 for(int i=0;i<states_code.size();i++) 27 system.out.println(i+" "+states_code.get(i)); 28 29 // Remove the new state added PA (which is the last element of the ArrayList). 30 states_code.remove(states_code.size()-1); 31 } 32 } {

input State AL Index O 1 2 3 AK AZ AR 4 FL TX 5 6 7 MA PA ... Program finished with exit code 0 Press ENTER to exit console. I