java remove duplicates
import java.util.*;
public class RemoveDuplicatesFromArrayList {
public static void main(String[] args) {
List<Integer> numbers = Arrays.asList(1,2,2,2,3,5);
System.out.println(numbers);
Set<Integer> hashSet = new LinkedHashSet(numbers);
ArrayList<Integer> removedDuplicates = new ArrayList(hashSet);
System.out.println(removedDuplicates);
}
}Remove duplicate element in an array in java
public class RemoveDuplicateElementDemo
{
public static int removeDuplicate(int[] arrNumbers, int num)
{
if(num == 0 || num == 1)
{
return num;
}
int[] arrTemporary = new int[num];
int b = 0;
for(int a = 0; a < num - 1; a++)
{
if(arrNumbers[a] != arrNumbers[a + 1])
{
arrTemporary[b++] = arrNumbers[a];
}
}
arrTemporary[b++] = arrNumbers[num - 1];
for(int a = 0; a < b; a++)
{
arrNumbers[a] = arrTemporary[a];
}
return b;
}
public static void main(String[] args)
{
int[] arrInput = {1, 2, 3, 3, 4, 5, 5, 6, 7, 8};
int len = arrInput.length;
len = removeDuplicate(arrInput, len);
// printing elements
for(int a = 0; a < len; a++)
{
System.out.print(arrInput[a] + " ");
}
}
}Copyright © 2021 Codeinu
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