Intersection of two int array in C#

Question

I am trying to find the intersection of two int array . I am using this code : ``` public int[] Find_Common_Elements(int[] p1, int[] p2) { int count = 0; for (int i = 0; i < p1.Length; i++) { for (int j = 0; j < p2.Length; j++) { if (p1[i] == p2[j]) { count++; break; } } } int[] result = new int[count]; count = 0; for (int i = 0; i < p1.Length; i++) { for (int j = 0; j < p2.Length; j++) { if (p1[i] == p2[j]) { result[count++] = p1[i]; break; } } } return result; } public int[] BubbleSort(int[] numarray) { int max = numarray.Length; for (int i = 1; i < max; i++) { for (int j = 0; j < max - i; j++) { if (numarray[j] > numarray[j + 1]) { int temp = numarray[j]; numarray[j] = numarray[j + 1]; numarray[j + 1] = temp; } } } return numarray; } public int[] Find_Unique_Elements(int[] numarray) { BubbleSort(numarray); int element = numarray[0]; int count = 1; for (int i = 1; i < numarray.Length; i++) { if (element == numarray[i]) continue; else { element = numarray[i]; count++; } } int[] resul…

Accepted Answer

You can use the built-in Linq `Intersect` extension method for this:

```
using System.Linq; // Make sure you include this line

public int[] Find_Common_Elements(int[] p1, int[] p2)
{
    return p1.Intersect(p2).ToArray();
}
```

Intersection of two int array in C#

Solution

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