void FillArray(int[] collection)

{

int length = collection.Length;

int index = 0;

while (index < length)

{

collection[index] = new Random().Next(1, 10);

//index = index + 1;

index++;

}

}

void PrintArray(int[] col)

{

int count = col.Length;

int position = 0;

while (position < count)

{

Console.WriteLine(col[position]);

position++;

}

}

int IndexOf(int[] collection, int find)

{

int count = collection.Length;

int index = 0;

int position = -1;

while (index < count)

{

if (collection[index] == find)

{

position = index;

break;

}

index++;

}

return position;

}

int[] array = new int[10];

FillArray(array);

array[4] = 4;

array[6] = 4;

PrintArray(array);

Console.WriteLine();

int pos = IndexOf(array, 444);

Console.WriteLine(pos);