Java 8 : Find union and intersection of two Lists (ArrayLists)

February 17, 2020February 20, 2020 Editorial Staff1 Comment

This tutorial shows you how to find union and intersection of two Lists (ArrayLists).

Java : How to find intersection of two Sets

February 11, 2020February 12, 2020 Editorial StaffLeave a Comment

This tutorial explains you two ways to find intersection of two Sets, i.e., using Java 8 Stream feature and Set’s retainAll() method.

Programs to Find Common Elements between Two Unsorted Arrays

December 10, 2018 Editorial StaffLeave a Comment

Given set of two unsorted arrays as input, the goal is to find common elements between them in an efficient way. Let’s solve this problem using the following methods i.e., Method 1: Iterative approach, Method 2: Using HashSet and Method 3:… Read More!