Problem Statement: Write a Java program to get first and last elements from ArrayList. Here’s a Java program that demonstrates how to get the first and last elements from an ArrayList, OUTPUT: First Element: 10Last Element: 50 Explanation: By following these steps, the program effectively retrieves and displays the first and last elements from the …
In this post, you will learn how to write a program to calculate the Sum of Diagonals of a Matrix in Java. To calculate the sum of both diagonals of a square matrix in Java, you can follow these steps: Here’s the Java program to achieve this with an explanation: OUTPUT: Matrix:1 2 34 5 …
Problem Statement: Write a Java program to create a PriorityQueue to manage a to-do list with tasks having different priorities. Here’s a Java program that demonstrates how to create a PriorityQueue to manage a to-do list with tasks having different priorities. OUTPUT: Task Completed: [Task 2, Priority: 1]Task Completed: [Task 5, Priority: 2]Task Completed: [Task …
Problem Statement: Write a Java program to implement a basic queue using LinkedList to enqueue and dequeue elements. Here’s a basic implementation of a queue using a LinkedList in Java to enqueue and dequeue elements. OUTPUT: Queue Size: 3Dequeued Element: 1Dequeued Element: 2Queue Size after Dequeue: 1 Explanation: This basic queue implementation provides the fundamental …
Problem Statement: Write a Java program to create a custom LinkedList class with methods to add elements, remove elements, find the length, and reverse the list. Here’s a custom linked list class in Java with methods to add elements, remove elements, find the length, and reverse the list. OUTPUT: Original Linked List:1 -> 2 -> …
Problem Statement: Write a Java program to swap the positions of two elements in an ArrayList given their indices. Here’s a Java program that demonstrates how to swap the positions of two elements in an ArrayList given their indices. OUTPUT: Original List: [Apple, Banana, Cherry, Date, Fig]List after swapping elements at index 1 and index …
Problem Statement: Write a Java program to create a method that takes an ArrayList of strings and returns a Map with each unique string as the key and its frequency as the value. Here’s a Java program that demonstrates how to create a method that takes an ArrayList of strings and returns a Map with …
Find unique string in ArrayList with its frequency Read More »
Problem Statement: Write a Java program to implement a function to merge two sorted ArrayLists into a single sorted ArrayList. Here’s a Java program that implements a function to merge two sorted ArrayLists into a single sorted ArrayList. OUTPUT: List 1: [2, 5, 8]List 2: [3, 4, 9]Merged List: [2, 3, 4, 5, 8, 9] …
Problem Statement: Write a Java program that extracts a sublist from an ArrayList, given a start and end index. Here’s a Java program that extracts a sublist from an ArrayList given start and end index. OUTPUT: Original List: [Apple, Banana, Cherry, Date, Fig]Sublist from index 1 to 3: [Banana, Cherry] Explanation: By using the subList() …
List Sublist: extracts a sublist from an ArrayList Read More »
Problem Statement: Write a Java program to create a method that partitions an ArrayList of integers into two separate lists, one containing even numbers and the other containing odd numbers. Here’s a Java program that demonstrates how to create a method to partition an ArrayList of integers into two separate lists, one containing even numbers …
ArrayList partition into two lists of odd/even numbers Read More »
