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法律學概論在 C# 中查詢陣列中最後一個元素的索引
要查詢陣列中最後一個元素的索引，程式碼如下 −
示例
using System;
public class Demo {
public static void Main(){
string[] products = new string[] { "Andy", "Mark", "Gary", "Andre"};
Console.WriteLine("One or more name begin with 'A'? = {0}",
Array.Exists(products, ele => ele.StartsWith("A")));
Console.WriteLine("Is the array having fixed size? = " + products.IsFixedSize);
Console.WriteLine("Is the array read only? = " + products.IsReadOnly);
Console.WriteLine("Is the array synchronized? = " + products.IsSynchronized);
Console.WriteLine("Index of the 1st element = "+products.GetLowerBound(0));
Console.WriteLine("Index of the last element = "+products.GetUpperBound(0));
}
}輸出
這將產生以下輸出 −
One or more name begin with 'A'? = True Is the array having fixed size? = True Is the array read only? = False Is the array synchronized? = False Index of the 1st element = 0 Index of the last element = 3
示例
現在我們來看看另一個示例 −
using System;
public class Demo {
public static void Main(){
string[] products = new string[] { };
Console.WriteLine("Is the array having fixed size? = " + products.IsFixedSize);
Console.WriteLine("Is the array read only? = " + products.IsReadOnly);
Console.WriteLine("Is the array synchronized? = " + products.IsSynchronized);
Console.WriteLine("Index of the 1st element = "+products.GetLowerBound(0));
Console.WriteLine("Index of the last element = "+products.GetUpperBound(0));
}
}輸出
這將產生以下輸出 −
Is the array having fixed size? = True Is the array read only? = False Is the array synchronized? = False Index of the 1st element = 0 Index of the last element = -1
更新於： 10-Dec-2019
203 次瀏覽
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