In Java, you can use the HashSet class to solve this problem. Just loop over array elements, insert them into HashSet using add () method, and check the return value.

Given an array of integers. Write a Java Program to find the sum of the elements of the array. An array is a data structure that contains a group of elements. Typically these elements are all of the ...

This Java runtime exception happens when the wrong type of object is placed into an array. In the example below, a BigInteger array is created, followed by an attempt to add a Double. The Double does ...

In this blog we will understand about Vector Class in Collection Framework. We use vector class to facilitate the growable nature of collection of objects. Like array we can access any member of the ...