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Solution in C#
int result = 0;
IEnumerable distinctArr = ar.Distinct();
foreach(int i in distinctArr)
{
int noOfItems = ar.FindAll(x => x == i).Count();
result += noOfItems / 2;
}
return result;
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Solution in C# int result = 0; IEnumerable distinctArr = ar.Distinct(); foreach(int i in distinctArr) { int noOfItems = ar.FindAll(x => x == i).Count(); result += noOfItems / 2; }
return result;