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AND between two list of integer in c#

i need AND between two list of integer in c# foe example if i have 

IList<int> list1 = new List<int>(1,2,7,4);

IList<int> list2 = new List<int>(4,2,3,5);

and i need this output List3 = List1 & List2; then list3 items is 2,4;

Solution

  • You can do list1.Intersect(list2).

    Since this function calculates the intersection set, Intersect only returns distinct elements, so {1,2,2}.Intersect({1,2}) => {1,2}.