static void copy_if <T>(List <T> arr, List <T> arr2,
algorithm_condition <T> condition)
{
foreach (var item in arr)
{
if (condition(item))
{
arr2.Add(item);
}
}
}
static void Test_delegates()
{
List <int> arr = new List <int>();
Console.WriteLine("List before functions:\n");
Fill_rand_list(ref arr, 20, 0, 10);
Print_collection(arr);
Console.WriteLine("\nAfter lambda compararsion condition:\n");
remove_if(ref arr, x => x > 5);
Print_collection(arr);
Console.WriteLine("\nAfter is_prime_number condition:\n");
List <int> copy = new List <int>();
algorithm_condition <int> condition = is_prime_number;
copy_if(arr, copy, is_prime_number);
Print_collection(copy);
}
