https://www.youtube.com/watch?v=Dk-aBvJ3U1c&list=PLO56HZSjrPTB4NxAsEP8HRk6YKBDLbp7m&index=50
> int[] numbers = {1, 2, 3};
>
> // 합계(반복문 사용)
> int sum = 0;
> foreach(int number in numbers)
. {
. sum += number;
. }
> sum
6
> using System.Linq;
> int[] numbers = {1, 2, 3};
>
> // 합계(LINQ)
> numbers.Sum();
6
> numbers.Min();
1
> numbers.Max();
3
> numbers.Average();
2
> int[] numbers = {1, 2, 3, 4, 5 };
> numbers.Count();
5
> numbers.Where(n => n % 2 == 0).ToList();
List<int>(2) {2, 4}
> List<string> techs = new List<string>();
> techs.Add("C#");
> techs.Add("ASP.NET");
> techs.Add("Blazor");
> techs.OrderBy(t => t)
OrderedEnumerable<string, string> {"ASP.NET", "Blazor", "C#" }