Selection Sort with IndexOfMin Extension Method

using System;
using System.Collections.Generic;

public class SelectionSort
{
    private static void Main(string[] args)
    {
        int n = int.Parse(Console.ReadLine());
        int[] A = new int[n];

        for (int i = 0; i < A.Length; i++)
        {
            A[i] = int.Parse(Console.ReadLine());
        }

        for (int i = 0; i < A.Length; i++)
        {

            Swap(A, i, A.IndexOfMin(i));
            Console.WriteLine(A[i]);
        }
    }

    private static void Swap(IList<int> list, int first, int second)
    {
        int temp = list[first];
        list[first] = list[second];
        list[second] = temp;
    }
}

public static class CollectionExtensions
{
    public static int IndexOfMin<T>(this IList<T> collection, int startIndex = 0)
        where T : IComparable<T>
    {
        if (0 > startIndex || startIndex >= collection.Count)
        {
            throw new IndexOutOfRangeException("Start index is outside the bounds of the collection");
        }

        int minIndex = startIndex;

        for (int i = startIndex; i < collection.Count; i++)
        {
            if (collection[i].CompareTo(collection[minIndex]) < 0)
            {
                minIndex = i;
            }
        }

        return minIndex;
    }
}