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GymEquipment.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Prac8
+{
+    public class GymEquipment : IComparable<GymEquipment>, IEquatable<GymEquipment>
+    {
+        public int Number { get; set; }
+        public string Name { get; set; }
+        public string Type { get; set; }
+        public string Condition { get; set; }
+        public string Place { get; set; }
+
+        public GymEquipment()
+        {
+            Name = string.Empty;
+            Type = string.Empty;
+            Condition = string.Empty;
+            Place = string.Empty;
+        }
+
+        public GymEquipment(int number, string name, string type, string condition, string place)
+        {
+            Number = number;
+            Name = name;
+            Type = type;
+            Condition = condition;
+            Place = place;
+        }
+
+        public int CompareTo(GymEquipment other)
+        {
+            if (other == null)
+            {
+                return 1;
+            }
+
+            int byName = string.Compare(Name, other.Name, StringComparison.OrdinalIgnoreCase);
+            if (byName != 0)
+            {
+                return byName;
+            }
+
+            return Number.CompareTo(other.Number);
+        }
+
+        public bool Equals(GymEquipment other)
+        {
+            if (other == null)
+            {
+                return false;
+            }
+
+            return Number == other.Number
+                   && string.Equals(Name, other.Name, StringComparison.OrdinalIgnoreCase)
+                   && string.Equals(Type, other.Type, StringComparison.OrdinalIgnoreCase)
+                   && string.Equals(Condition, other.Condition, StringComparison.OrdinalIgnoreCase)
+                   && string.Equals(Place, other.Place, StringComparison.OrdinalIgnoreCase);
+        }
+
+        public override bool Equals(object obj)
+        {
+            return Equals(obj as GymEquipment);
+        }
+
+        public override int GetHashCode()
+        {
+            return GetSafeHash(Name)
+                ^ GetSafeHash(Type)
+                ^ GetSafeHash(Condition)
+                ^ GetSafeHash(Place)
+                ^ Number;
+        }
+
+        private static int GetSafeHash(string value)
+        {
+            return value == null ? 0 : value.ToLowerInvariant().GetHashCode();
+        }
+
+        public override string ToString()
+        {
+            return $"№: {Number}, Название: {Name}, Тип: {Type}, Состояние: {Condition}, Место: {Place}";
+        }
+    }
+}