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 …
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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() …
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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 …
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Problem Statement: Write a Java program to find the common elements in two ArrayLists. Here’s a Java program that demonstrates how to find common elements in two ArrayLists. OUTPUT: List 1: [10, 20, 30, 40]List 2: [20, 40, 60, 80]Common Elements: [20, 40] Explanation: By using HashSet to store unique elements and take advantage of …
Problem Statement: Write a Java program to remove duplicates from an ArrayList while preserving the original order. Here’s a Java program that demonstrates how to remove duplicates from an ArrayList while preserving the original order. I’ll provide an explanation of the program’s logic. OUTPUT: Original List: [10, 20, 30, 20, 40, 10]List after removing duplicates: …
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Problem Statement: Write a Java program to remove all elements from an ArrayList that are greater than a certain value. Here’s a Java program that demonstrates how to remove all elements from an ArrayList that are greater than a certain value. I’ll provide an explanation of the program’s logic. OUTPUT: Original List: [10, 25, 5, …
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Problem Statement: Write a Java program to Convert an ArrayList of strings into a string array. Here’s a Java program that demonstrates how to convert an ArrayList of strings into a string array. I’ll provide an explanation of the program’s logic. OUTPUT: String Array:HelloWorldJavaProgramming Explanation: The toArray() method converts the ArrayList of strings into a …
Problem Statement: Create a stack using an ArrayList and implement push, pop, and peek operations. Here’s a Java program that demonstrates how to create a stack using an ArrayList and implements the push, pop, and peek operations. I’ll provide an explanation of the program’s logic. OUTPUT: Peek: 30Stack size: 3Pop: 30Pop: 20Is stack empty? false …
Problem Statement: Implement a Java program to sort an ArrayList of custom objects based on a specific attribute. Here’s a Java program that demonstrates how to sort an ArrayList of custom objects (in this case, Employee objects) based on a specific attribute (name in this case). I’ll provide an explanation of the program’s logic. OUTPUT: …
Sorting a List: sort an ArrayList of custom objects Read More »