public int[] selectionSort(int[] list)
        {
            int[] puffer = list;
            int min;
            int minIdx;

            for (int i = 0; i < puffer.Length; i++) // starting index for each run
            {
                min = puffer[i];
                minIdx = i;

                for (int j = i; j < puffer.Length; j++) // iterate form starting point to end
                {
                    if (puffer[j] < min) // check if iterated value is smaller than minimum
                    {
                        // save its index and value as minimum
                        minIdx = j;
                        min = puffer[j];
                    }
                }

                int pufferValue = puffer[i]; // save the value in order to swap

                puffer[i] = min;
                puffer[minIdx] = pufferValue;

            }

            return puffer;
        }