[C# Linq] 정렬, Orderby ThenBy

int n = 2;
var strings = new string[] { "abce", "abcd", "cdx" };
var strings_orderBy = strings.OrderBy(c => c[n]).ToArray();
var string_thenBy = strings.OrderBy(c => c[n]).ThenBy(x => x).ToArray();

//answer
strings_orderBy  = {"abce", "abcd", "cdx"}; //오름차순 정렬
strings_thenBy  = {"abcd", "abce", "cdx"}; //다중오름차순 정렬