【jq】c#零基础学习之路（5）自己编写简单的Mylist<T>

   public class MyList<T> where T : IComparable
     {

         private T[] array;
         private int count;
         public MyList(int size)
         {
             if (size >= )
             {
                 array = new T[size];
             }

         }
         public MyList()
         {
             array = new T[];
         }
         public int Capacity
         {
             get
             {
                 return array.Length;
             }
         }
         public int Count
         {
             get { return count; }
         }
         public void Add(T a)
         {
             if (Count == Capacity)
             {
                 if (Capacity == )
                 {
                     array = new T[];
                 }
                 else
                 {
                     var newarray = new T[Capacity * ];
                     Array.Copy(array, newarray, count);
                     array = newarray;
                 }
             }
             array[count] = a;
             count++;
         }
         public T GetItem(int index)
         {
             if (index >=  && index <= count - )
             {
                 return array[index];
             }
             else
             {
                 throw new Exception("超出索引");
             }
         }
         public T this[int index]
         {
             get
             {
                 return GetItem(index);
             }
             set
             {

                 if (index >=  && index <= count - )
                 {
                     array[index] = value;
                 }
                 else
                 {
                     throw new Exception("超出索引");
                 }
             }
         }
         public void Insert(int a, T t)
         {
             if (a >=  && a <= Count - )
             {
                 if (count == Capacity)
                 {
                     var newarray = new T[Capacity * ];
                     Array.Copy(array, newarray, count);
                     array = newarray;
                 }
                 else
                 {
                     for (int i = count - ; i >= a; i--)
                     {
                         array[i + ] = array[i];
                     }
                     array[a] = t;
                     count++;
                 }
             }
         }
         public void RemoveAt(int a)
         {
             if (a >=  && a <= Count - )
             {
                 for (int i = a + ; i <= count - ; i++)
                 {
                     array[i - ] = array[i];
                 }
                 count--;
             }
         }
         public int IndexOf(T t)
         {
             for (int i = ; i <= count - ; i++)
             {
                 if (array[i].Equals(t))
                 {
                     return i;
                 }
             }
             return -;
         }
         public int LastIndexOf(T t)
         {
             for (int i = count - ; i >= ; i--)
             {
                 if (array[i].Equals(t))
                 {
                     return i;
                 }
             }
             return -;
         }
         public void Sort()
         {
             for (int j = ; j < count - ; j++)
             {

                 for (int i = ; i < count -  - j; i++)
                 {
                     if (array[i].CompareTo(array[i + ]) > )
                     {
                         T tamp = array[i];
                         array[i] = array[i + ];
                         array[i + ] = tamp;
                     }
                 }
             }
         }
     }

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