calculate number of true (or false) elements in a bool array?

Question

Suppose I have an array filled with Boolean values and I want to know how many of the elements are true.

private bool[] testArray = new bool[10] { true, false, true, true, false, true, true, true, false, false };  int CalculateValues(bool val) {     return ??? } 

CalculateValues should return 6 if val is true, or 4 if val is false.

Obvious solution:

int CalculateValues(bool val) {     int count = 0;     for(int i = 0; i<testArray.Length;i++)     {         if(testArray[i] == val)             count++;     }     return count; } 

Is there an "elegant" solution?

Answer 1

return testArray.Count(c => c) 

Answer 2

Use LINQ. You can do testArray.Where(c => c).Count(); for true count or use testArray.Where(c => !c).Count(); for false check