c# - How to get the 1st match between 2 string arrays -

i have 2 string arrays. 1 base , other changing.

string[] basearray = { "gold", "silver", "bronze" }; string[] readarray = { "bronze", "silver", "gold" };  // after comparing readarray on basearray result should //string match = "gold"; 

i want 1st in order of basearray.

//example2 string[] readarray = { "bronze", "silver" }; //string match should "silver" 

if want 1 result, using linq:

string firstmatch = basearray.firstordefault(readarray.contains); 

if want 1 result, not using linq:

string firstmatch = null; foreach(string element in basearray) {     if (array.indexof(readarray, element) >= 0)     {         firstmatch = element;         break;     } } 

if want matching elements, using linq:

string[] common = basearray.intersect(readarray).toarray(); 

if want matching elements, not using linq:

hasset<string> common = new hashset<string>(readarray); result.intersect(basearray);