Java: Convert a linked list to array list

Java Collection, LinkedList Exercises: Exercise-23 with Solution

Write a Java program to convert a linked list to an array list.

Sample Solution:-

Java Code:

import java.util.*;

public class Exercise23 {
 public static void main(String[] args) {
  // create an empty linked list
  LinkedList <String> linked_list = new LinkedList <String> ();
          System.out.println("Original linked list: " + linked_list);
      //Convert a linked list to array list    
     List<String> list = new ArrayList<String>(linked_list);

    for (String str : list){

Sample Output:

Original linked list: [Red, Green, Black, White, Pink]                 

Pictorial Presentation:

Java Collection Linked-list: Convert a linked list to array list.


Flowchart: Convert a linked list to array list

Java Code Editor:

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Java: Tips of the Day

Oddness Check

Is it possible to use this code to accurately determine the odd number?

public boolean oddOrNot(int num) {
  return num % 2 == 1;

I hope you noticed a trick. If we decide to check a negative odd number in such a way (-5, for example), the remainder of the division will not be equal to one (what does it mean?) Therefore, use a more accurate method:

public boolean oddOrNot(int num) {
  return (num & 1) != 0;

It not only solves the problem of negative numbers, but also works more productively than its predecessor. Arithmetic and logical operations are performed much faster than multiplication and division.

Ref: https://bit.ly/3giyonA


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