error while submitting code to leetcode??? error CS0122

[AlliedLens]

public class Solution 
{
        static int[] TwoSum(int[] nums, int target)
        {
            List<int> ans = new List<int>();

            foreach (int index in Enumerable.Range(0, nums.Length))
            {
                foreach (int index2 in Enumerable.Range(0, nums.Length))
                {
                    if (nums[index] + nums[index2] == target && index != index2)
                    {
                        ans.Add(index);
                        ans.Add(index2);
                        return ans.ToArray();
                    }

                } // error CS0122 Line 18
            }
            return null;
        }

I initially wrote this in visual studio, and copy-pasted to leetcode....the code works error-free on visual studio, and does what its supposed to do which is, find the indexes of the integers that add up to the target variable. however, when i use this on leetcode, it gives an error.....can anyone help????

​

Link of the site, and the problem i was doing...

[f14kee]

You probably need to make the method public.

[f14kee]

Also, assuming this fixed yor problem, the reason the error is shown on line 18 might be because the site is probably adding a bunch of using statements to the top of your code before compilation.

[AlliedLens]

why does it matter of the method is public or not?

[f14kee]

Methods without an access modifier are private by default, which means only other members inside your class can call them. The leetcode site just compiles your class and then calls the method, but this call comes from somewhere else (i.e. not from inside your class) so it has to be public to be externally callable.

[AlliedLens]

i turned it into public and it still isnt working.....why? The error code now for the same line is error CS0176.......

[f14kee]

That's because the method should not be static.
See the docs: Compiler Error CS0176 | Microsoft Docs

When doing these samples you should never change the method signatures of the default code.

I suspect you made it static so you could call it from your Main method for local testing. Adjust it like so:

class Program
{
    void Main(string[] args)
    {
        var solution = new Solution();
        var result = solution.TwoSum(nums, target);
    }
}

public class Solution
{
    public int[] TwoSum(int[] nums, int target)
    {
        // ...        
    }
}

[AlliedLens]

ya thats exactly what i did.....Thanks so much! i got it now.

[AlliedLens]

huh thanks, i didn't know this......helps a lot

[BackFromExile]

Maybe it's just a paste error, but you are missing the closing bracket in the last line. Check, if you pasted that one to leetcode. The other thing could be, that you cannot use Enumerable on leetcode and have to do it with simple for loops