Can we define value from confirmed duplicates in arrays & how C#-CodePudding

Can we define value from confirmed duplicates in 3 4 5 arrays & how? Probably this is wrong path I take for finding duplicates, but better to ask than to roam all over my small brain and eventualy delete this and get back to array matrix... I need to extract - define that int value that duplicates and later how much time in each of the 5 rows it exists. So to summarize: How to get that duplicated value "int" so I can use it for later checks.

public void Check() 

{
    var result1 = Row1.Any(L1 => Row2.Contains(L1) && Row3.Contains(L1)) == true;

    var result2 = Row1.Any(L1 => Row2.Contains(L1) && Row3.Contains(L1) && Row4.Contains(L1)) == true;

    var result3 = Row1.Any(L1 => Row2.Contains(L1) && Row3.Contains(L1) && Row4.Contains(L1) && Row5.Contains(L1)) == true;

        if(result3 == true) { result1 = false; result2 = false; Debug.Log("Line 5"); }

        if(result2 == true) { result1 = false; Debug.Log("Line 4"); }

        if(result1 == true) { Debug.Log("Line 3"); }
}

CodePudding user response：

If I'm reading your question correctly, you simply want the Intersect extension method, e.g.

int[] id1 = { 44, 26, 92, 30, 71, 38 };
int[] id2 = { 39, 59, 83, 47, 26, 4, 30 };

IEnumerable<int> both = id1.Intersect(id2);

foreach (int id in both)
    Console.WriteLine(id);

/*
 This code produces the following output:

 26
 30
*/

CodePudding user response：

If the goal is to find the intersection, i.e. all items that are present in one or more arrays, then you can use the linq Intersect function.

var allItemsThatAreInBothRow1AndRow2 = Row1.Intersect(Row2);

And it can be chained

var allItemsInRow1234= Row1
                .Intersect(Row2)
                .Intersect(Row3);
                .Intersect(Row4);