Algorithms Pancake Sort suggest change

C Implementation

public class PancakeSort
{
    private static void SortPancake(int[] input, int n)
    {
        for (var bottom = n - 1; bottom > 0; bottom--)
        {
            var index = bottom;
            var maxIndex = input[bottom];
            int i;
            for (i = bottom - 1; i >= 0; i--)
            {
                if (input[i] > maxIndex)
                {
                    maxIndex = input[i];
                    index = i;
                }
            }
            if (index == bottom) continue;
            var temp = new int[n];
            var j = 0;
            for (i = bottom; i > index; i--,j++)
            {
                temp[j] = input[i];
            }
            for (i = 0; i < index; i++, j++)
            {
                temp[j] = input[i];
            }
            if (temp.Length > j) temp[j] = input[index];
            for (i = 0; i <= bottom; i++)
            {
                input[i] = temp[i];
            }
        }
    }

    public static int[] Main(int[] input)
    {
        SortPancake(input, input.Length);
        return input;
    }
}

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