How do you remove duplicates from an integer array in Java?

How do you remove duplicates from an integer array in Java?

Java Program to remove duplicate element in an Array

1. public class RemoveDuplicateInArrayExample{
2. public static int removeDuplicateElements(int arr[], int n){
3. if (n==0 || n==1){
4. return n;
5. }
6. int[] temp = new int[n];
7. int j = 0;
8. for (int i=0; i

How do you remove duplicates from an array in Java?

Given an array, the task is to remove the duplicate elements from the array….Approach:

1. Create a HashMap to store the unique elements.
2. Traverse the array.
3. Check if the element is present in the HashMap.
4. If yes, continue traversing the array.
5. Else Print the element and store the element in HashMap.

How do you remove duplicate values from an array?

Algorithm to remove duplicate elements in an array (sorted array)

1. Input the number of elements of the array.
2. Input the array elements.
3. Repeat from i = 1 to n.
4. – if (arr[i] != arr[i+1])
5. – temp[j++] = arr[i]
6. – temp[j++] = arr[n-1]
7. Repeat from i = 1 to j.
8. – arr[i] = temp[i]

How are duplicates removed from a given unsorted array in Java?

1. Brute Force approach I : Using 3 nested loops. To remove duplicates, first, we need to find them.
2. Brute Force approach II: Using 2 nested loops.
3. Sorting approach I: Using extra space.
4. Sorting approach II: Using constant extra space.
5. Using Hash Table.

How do you delete repeated elements in an integer array?

Algorithm to delete the duplicate elements from sorted array

1. Define the size of elements of the array.
2. Read the array elements from the user.
3. Repeat from i = 1 to num. if (arr[i] != arr [i + 1] temp [j++] = arr[i] temp [j++] = arr[n- 1] Repeat from i = 1 to j. arr[i] = temp[i]
4. Print unique elements of the array.

How do you remove an element from an array in Java?

To remove an element from an array, we first convert the array to an ArrayList and then use the ‘remove’ method of ArrayList to remove the element at a particular index. Once removed, we convert the ArrayList back to the array.

What do you use for removing duplicate elements from an array in JS?

Answer: Use the indexOf() Method You can use the indexOf() method in conjugation with the push() remove the duplicate values from an array or get all unique values from an array in JavaScript.

How do you remove duplicates from unsorted array?

Remove duplicates from unsorted array using Map data structure

1. Take a hash map, which will store all the elements which have appeared before.
2. Traverse the array.
3. Check if the element is present in the hash map.
4. If yes, continue traversing the array.
5. Else Print the element.

How do you find duplicates in unsorted arrays?

Algorithm

1. Declare and initialize an array.
2. Duplicate elements can be found using two loops. The outer loop will iterate through the array from 0 to length of the array. The outer loop will select an element.
3. If a match is found which means the duplicate element is found then, display the element.

How do you remove duplicate elements from an array in Java without using collections?

“remove duplicates from array without using collection” Code Answer

1. // Must sort arrays first –> Arrays.sort(arrayName)
2. public class RemoveDuplicateInArrayExample{
3. public static int removeDuplicateElements(int arr[], int n){
4. if (n==0 || n==1){
5. return n;
6. }
7. int[] temp = new int[n];
8. int j = 0;