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Sort public class Part : IEquatable, IComparable { public int Id; public string Name; public Part(int id, string name) { Id = id; Name = name; } public int SortByNameAscending(string name1, string name2) { return name1.CompareTo(name2); } public int CompareTo(Part comparePart) { if (comparePart == null) return 1; else return Id.CompareTo(comparePart.Id); } public bool Equals(Part? other) { if (o..

1. Contains static void Main(string[] args) { List i_list = new List(); i_list.Add(100); i_list.Add(200); i_list.Add(300); i_list.Add(400); for (int i = 0; i < i_list.Count; i++) { Console.WriteLine($"i_list[{i}] = {i_list[i]}"); } Console.WriteLine("\n=========== Contains ===========\n"); Console.WriteLine($"Contains : i_list with 200 is {i_list.Contains(200)}"); Console.WriteLine($"Contains : ..