Squares of a Sorted Array

public class Solution {
    public int[] SortedSquares(int[] nums) {
        // 1. reverse
            for (int i = 0; i < nums.Count(); i++)
            {
                if (nums[i] < 0)
                    nums[i] = Math.Abs(nums[i]);
            }
            // 2. double
            for (int i = 0; i < nums.Count(); i++)
            {
                nums[i] = (int)Math.Pow(nums[i], 2);
            }
            // 3. order
            for (int j = 0; j < nums.Count(); j++)
            {
                for (int i = nums.Count() - 1; i > 0; i--)
                {
                    if (nums[i] < nums[i - 1])
                    {
                        int temp = nums[i];
                        nums[i] = nums[i - 1];
                        nums[i - 1] = temp;
                    }
                }
            }
            return nums;
    }
}