Write a method that removes adjacent duplicates from an array list. Complete this code. import java.util.ArrayList; public class ArrayListUtil { /** Removes adjacent duplicates from an array list of strings. @param word an array list of strings */ public static void removeAdjacentDuplicates(ArrayList words) { . . . } }
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Write a method that removes adjacent duplicates from an array list. Complete this code.
import java.util.ArrayList;
public class ArrayListUtil
{
/**
Removes adjacent duplicates from an array list of strings.
@param word an array list of strings
*/
public static void removeAdjacentDuplicates(ArrayList<String> words)
{
. . .
}
}
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- Write a Program in Java programming: Support you have an ArrayList containing random integers. These integers can be any number, and each integer can appear more than once. For example, [2, 19, 21, 19, 21, 1, 3, 3, 6, 21, .....] Your job is to write a method called findEvenFrequentNumbers(ArrayList<Integer> list) that returns an ArrayList which has all the numbers appears in even frequency and in increasing order. e.g. list = [2, 19, 21, 19, 21, 1, 3, 3, 6, 21], should return [3, 19] list = [3, 3, 3, 1, 2, 2, 2, 2, 2], should return [] list = [1, 1, 1, 1, 1], should return [1] Note that you need to provide a class with the main function and also the imports.Your activity: write a same java program that will accept 20 integer in a list and returns the index of the first occurrence of the smallest element in the array. Also, write a program to test your method. Write a Java method, smallestIndex, that takes as its parameters an int array and its size, and returns the index of the (first occurrence of the) smallest element in the array. public class Array_labExercise2 { public static void main(String[] args) { int[] list = {56, 34, 67, 54, 23, 87, 66, 92, 15, 32, 55, 15, 88, 22, 30}; System.out.print("List elements: "); printArray(list); System.out.println(); System.out.println("Index of the (first occurenc of the) " + "smallest element in list is: " + smallestIndex(list)); System.out.println("Smallest element in list is: " + list[smallestIndex(list)]); } public static void printArray(int[] list) { int counter; for (counter = 0; counter < list.length; counter++) System.out.print(list[counter] + " ");…Fix the following method printEvenIndex so that it will print out the Integers at even indices of the passed-in ArrayList list. import java.util.*; public class Test1 { public static void printEvenIndex(ArrayList<Integer> list) { for (int i) { if (i % 2 == 1) { System.out.print(list.get(i) + ", "); } } } public static void main(String[] args) { //instantiate ArrayList and fill with Integers ArrayList<Integer> values = new ArrayList<Integer>(); int[] nums = {1, 5, 7, 9, -2, 3, 2}; for (int i = 0; i < nums.length; i ++) { values.add(nums[i]); } System.out.println("Expected Result:\t 1, 7, -2, 2,"); System.out.print("Your Result:\t\t "); printEvenIndex(values); } }
- Write a Java method that counts increasing sets in an integer array. The sets do not overlap. Example: 10,9,9,4,5 Output would be 3(10) (9,9) (4,5)The implementation of a queue in an array, as given in this chapter, uses the variable count to determine whether the queue is empty or full. You can also use the variable count to return the number of elements in the queue. On the other hand, class linkedQueueType does not use such a variable to keep track of the number of elements in the queue. Redefine the class linkedQueueType by adding the variable count to keep track of the number of elements in the queue. Modify the definitions of the functions addQueue and deleteQueue as necessary. Add the function queueCount to return the number of elements in the queue. Also, write a program to test various operations of the class you defined.Write a method quicksort that takes in an ArrayList of integers and returns them in ascending order, using a quicksort style of sorting. Remember that this style relies on choosing a pivot integer and breaking the set into values less than the pivot and more than the pivot, then repeating this process on each half until only single values are left, which are then put back together. public ArrayList<Integer> quickSort(ArrayList<Integer> list) { *code here*}
- Implement unique method that takes an ArrayList as input and returns an ArrayList withexactly a single occurrence of each element from the input list. For example, if the input listcontains 5, 6, 7, 6, 3, 5, 5, 4 then the output list should have 5, 6, 7, 3, 4.Note: (1) You may assume that the ArrayList has a specific type of elements in it. In the class, we assumedit to have String type values. (2) You may only work with ArrayList(s).Write a Java method that will take in a generic ArrayList with Doubles (reference type). Have the method take each Double and convert it to an Integer and store it into another generic ArrayList that holds Integers. When done, return the new Integer ArrayList.run the main() method of class Lab11D. Pls do the SWAPIN LAB 11D and below is the tester For example, A B C D E F should turn into D E F A B C. You should assume that the array list has an even number of elements (not necessarily 6). One solution is to keep removing the element at index 0 and adding it to the back. Each step would look like this: A B C D E F B C D E F A C D E F A B D E F A B C When you run the code, you will find that there is a lot of movement in the array list. Each call to remove(0) causes n - 1 elements to move, where n is the length of the array. If n is 100, then you move 99 elements 50 times, (almost 5000 move operations). That's an inefficient way of swapping the first and second halves. (Learn more about time complexity at the end of the lab). Come up with a better way in which you swap the elements directly. Hint: How do you swap the two elements A and D? A B C D E F D B C A E F D E C A B F D E F A B C Write pseudocode for this algorithm. Add…
- Write a program in java that prompts the user to enter an inte- ger m and find the smallest integer n such that m * n is a perfect square. (Hint: Store all smallest factors of m into an array list. n is the product of the factors that appear an odd number of times in the array list. For example, consider m = 90, store the factors 2, 3, 3, and 5 in an array list. 2 and 5 appear an odd number of times in the array list. Thus, n is 10.)Write a method that removes the duplicate elements froman array list of integers using the following header:public static void removeDuplicate(ArrayList<Integer> list)Write a test program that prompts the user to enter 10 integers to a list and displaysthe distinct integers in their input order and separated by exactly one space.Here is a sample run: Enter 10 integers: 34 5 3 5 6 4 33 2 2 4 ↵EnterThe distinct integers are 34 5 3 6 4 33 2write a java program: (must use set or map) Given an integer array and a value k, write a method called kDifference() thatfinds a pair in the array such that their difference equals k. If such a pair existsonly print the first one you find, otherwise state that there is no pair.