Nov 16, 2024 · Given an array, the task is to remove the duplicate elements from an array. The simplest method to remove duplicates from an array is using a Set , which automatically eliminates duplicates. This method can be used even if the array is not sorted.

There are multiple ways to delete all duplicate elements from an arrays. To delete the given element from array you can use third temporary array or by sorting the array and then removing the duplicate elements.

Simply an array to remove duplicates. int end = arr.length; for (int i = 0; i < end; i++) { for (int j = i + 1; j < end; j++) { if (arr[i] == arr[j]) { . int shiftLeft = j; for (int k = j+1; k < end; k++, shiftLeft++) { arr[shiftLeft] = arr[k]; end--; j--; int[] whitelist = new int[end]; for(int i = 0; i < end; i++){

In this guide, we'll explore different methods to remove duplicates from an array using Java. 1. Using a Temporary Array. This method involves sorting the array first and then using a temporary array to store unique elements. This approach requires extra space for the temporary array. public class RemoveDuplicatesUsingTempArray {

Jun 25, 2015 · /* * Method to remove duplicates from array in Java, without using * Collection classes e.g. Set or ArrayList. Algorithm for this * method is simple, it first sort the array and then compare adjacent * objects, leaving out duplicates, which is already in the result.

Apr 1, 2025 · Write a Java program to remove duplicates from an array without using a HashSet. Write a Java program to remove duplicate numbers while preserving their first occurrence. Write a Java program to remove duplicate elements from a sorted array efficiently.

Java 8 provides an efficient way to remove duplicates from an array using the Stream API. In this guide, we will learn how to remove duplicates from arrays in Java 8. Write a Java program that: Takes an array as input. Removes duplicate elements. Displays the array without duplicates.

Mar 19, 2024 · Iterates through the input array using an enhanced for loop. Adds each element to the uniqueSet, automatically removing duplicates. Main Method: Declares an example array named arrayWithDuplicates containing duplicate elements. Calls the removeDuplicates method, passing the array with duplicates.

Apr 1, 2025 · Write a Java program to remove duplicate elements from a given array and return the updated array length. Sample array: [20, 20, 30, 40, 50, 50, 50] After removing the duplicate elements the program should return 4 as the new length of the array.

Dec 6, 2024 · We can remove duplicate element in an array by 2 ways: using temporary array or using separate index. To remove the duplicate element from array, the array must be in sorted order. If array is not sorted, you can sort it by calling Arrays.sort (arr) method. If you have unsorted array, you need to sort it first.