Set Operators in Linq

There are mainly five types of Set Operators in Linq.


1. Distinct

2. Concat

3. Union

4. Intersect

5. Except

1.Distinct
public void DistinctFunction()
{
int[] seq1 = { 1, 2, 3, 3, 4, 2, 5, 4, 5, 2, 1 };
var distinctValues = seq1.Distinct();
Console.WriteLine("Distinct Values in the array : ");
foreach (var n in distinctValues)
{
Console.WriteLine(n);
}
}
OutputDistinct Values in the array :
1
2
3
4
5



2.Concat
public void ConcatFunction()
{
int[] seq1 = { 1, 2, 3 }, seq2 = { 3, 4, 5 };
var concatValues = seq1.Concat(seq2);
Console.WriteLine("Concatenation of two array : ");
foreach (var n in concatValues)
{
Console.WriteLine(n); }
 }
OutputConcatenation of two array :
1
2
3
3
4
5

3.Union

public void UnionFunction()
{
    int[] seq1 = { 1, 2, 3 }, seq2 = { 3, 4, 5 };
 
    var unionValues = seq1.Union(seq2);
 
    Console.WriteLine("Union of two array : ");
    foreach (var n in unionValues)
    {
        Console.WriteLine(n);
    }
}

Output

Union of two array :
1
2
3
4
5


4.Intersect
public void IntersectFunction() {    int[] seq1 = { 1, 2, 3 }, seq2 = { 3, 4, 5 };    var unionValues = seq1.Intersect(seq2);    Console.WriteLine("Intersection of two array : ");    f oreach (var n in unionValues)    {      Console.WriteLine(n);    } } OutputIntersection of two array :  3   5.Except public void ExceptFunction() {  int[] seq1 = { 1, 2, 3 }, seq2 = { 3, 4, 5 };  var unionValues = seq1.Except(seq2); Console.WriteLine("Applying Except Function on two arrays : "); foreach (var n in unionValues) {  Console.WriteLine(n);  } } OutputApplying Except Function on two arrays :  1  2