C# |将容量设置为排序列表对象中的实际元素数量
原文:https://www . geeksforgeeks . org/c-sharp-将容量设置为排序列表中元素的实际数量/
排序列表。TrimToSize 方法 用于将容量设置为 SortedList 对象中元素的实际数量。 语法:
public virtual void TrimToSize ();
异常:如果 SortedList 对象为只读或者 SortedList 具有固定大小，此方法将抛出notsupportdexception。 以下程序说明了上述方法的使用: 示例 1:
c sharp . c sharp . c sharp . c sharp
// C# program to illustrate the
// SortedList.TrimToSize() Method
using System;
using System.Collections;
class GFG {
// Main method
public static void Main()
{
// create and initialize new SortedList
SortedList mylist = new SortedList();
// Adding elements to SortedList
mylist.Add("1", "C++");
mylist.Add("2", "Java");
mylist.Add("3", "DSA");
mylist.Add("4", "Python");
mylist.Add("5", "C#");
mylist.Add("6", "HTML");
// Capacity of SortedList before trimmimg
Console.WriteLine("Before trimming the capacity is: {0}",
mylist.Capacity);
// trim the SortedList
mylist.TrimToSize();
// Capacity of ArrayList after trimming
Console.WriteLine("After trimming the capacity is: {0}",
mylist.Capacity);
}
}
Output:
Before trimming the capacity is: 16
After trimming the capacity is: 6
例 2:
c sharp . c sharp . c sharp . c sharp
// C# program to illustrate
// SortedList.TrimToSize() Method
using System;
using System.Collections;
class GFG {
// Main Method
public static void Main()
{
// create and initialize new SortedList
SortedList mylist = new SortedList();
// Adding elements to SortedList
mylist.Add("h", "Hello");
mylist.Add("g", "Geeks!");
mylist.Add("w", "Welcome");
mylist.Add("t", "to");
mylist.Add("n", "Noida");
// Displaying the count, capacity
// and values of the SortedList.
Console.WriteLine("Before Using TrimToSize Method:");
Console.WriteLine();
Console.WriteLine("Count: {0}", mylist.Count);
Console.WriteLine("Capacity: {0}", mylist.Capacity);
Console.Write("Values are: ");
Display(mylist);
Console.WriteLine();
// Trim the SortedList.
mylist.TrimToSize();
// Displaying the count, capacity
// and values of the SortedList.
Console.WriteLine();
Console.WriteLine("After Using TrimToSize Method:");
Console.WriteLine();
Console.WriteLine("Count: {0}", mylist.Count);
Console.WriteLine("Capacity: {0}", mylist.Capacity);
Console.Write("Values are: ");
Display(mylist);
// Clear the SortedList
mylist.Clear();
Console.WriteLine();
// Displaying the count, capacity
// and values of the SortedList.
Console.WriteLine();
Console.WriteLine("After Using Clear Method:");
Console.WriteLine();
Console.WriteLine("Count: {0}", mylist.Count);
Console.WriteLine("Capacity: {0}", mylist.Capacity);
Console.Write("Values are: ");
Display(mylist);
// again trim the SortedList
mylist.TrimToSize();
Console.WriteLine();
// Displaying the count, capacity
// and values of the SortedList.
Console.WriteLine();
Console.WriteLine("After Again Using TrimToSize Method:");
Console.WriteLine();
Console.WriteLine("Count: {0}", mylist.Count);
Console.WriteLine("Capacity: {0}", mylist.Capacity);
Console.Write("Values are: ");
Display(mylist);
}
// to display the values of SortedList
public static void Display(SortedList mylist)
{
// taking an IList and
// using GetValueList method
IList vlist = mylist.GetValueList();
for (int i = 0; i < mylist.Count; i++)
Console.Write(vlist[i] + " ");
}
}
Output:
Before Using TrimToSize Method:
Count: 5
Capacity: 16
Values are: Geeks! Hello Noida to Welcome
After Using TrimToSize Method:
Count: 5
Capacity: 5
Values are: Geeks! Hello Noida to Welcome
After Using Clear Method:
Count: 0
Capacity: 5
Values are:
After Again Using TrimToSize Method:
Count: 0
Capacity: 0
Values are:
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