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notes intro/old submit AP Problems the dump links
 

In a class called ArrayListPractice

Create an arraylist of integers and fill it with the values 6,2,7,3,12,1, 9, 9, 3, 5, 9

 

  • Create a method removeNines that will remove every 9 from the list.
  • Create a method called public void replaceWithRandom (int k) that will find all instances of k and replace it with a random number between 0 and k
  • Create a method called makeEven that will make all even (either staying if even, or moving up one if odd) (so 6 would become 6, 7 would become 8, 9 would become 10)
  • Create a method called public void addZeros (int k) that will add k zeroes after every instance of k, so if k was 3, it would add three elements 0,0,0 after k.
  • For advanced create a method that will return as an arraylist, all numbers that repeat.
  • For advanced create a method that will return the data as an array of ints

 

Starter code:

import java.util.ArrayList;

public class ArrayListPractice {
	ArrayList myList=new ArrayList();
	
	public ArrayListPractice()
	{
		/6,2,7,3,12,1, 9, 9, 3, 5, 9
		myList.add(6);
		myList.add(2);
		myList.add(7);
		myList.add(3);
		myList.add(12);
		myList.add(1);
		myList.add(9);
		myList.add(9);
		myList.add(3);
		myList.add(5);
		myList.add(9);
	}
	
	public static void main (String[] args)
	{
		ArrayListPractice a=new ArrayListPractice();
	}
}